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Remove Edge user associations

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Works with Windows 10 and 11Works with Windows Vista, XP, 7, 8, 10, 11, and Windows Server 2008 or newer.
  • Windows onlyThis script improves your privacy on Windows
  • Single actionThis page belongs to a script, containing basic changes to achieve a task.
  • Impact: High

    System Functionality / Data Loss Risk: High

    This action improves privacy with high impact when you run the recommended script.

  • Batch (batchfile)These changes use Windows system commands to update your settings.
  • Administrator rights requiredThis script requires privilege access to do the system changes
  • Fully reversible

    You can fully restore this action (revert back to the original behavior) using this website.

    The restore/revert methods provided here can help you fix issues.

Overview

This script removes user-chosen Microsoft Edge associations for specific file types and web links. Even if a user does not explicitly choose Edge as the default browser, it is chosen by default.

Edge associations often remain after uninstalling the browser 1. This can affect privacy and system performance.

Removing these associations will:

  • Enhance privacy by reducing Microsoft Edge's presence in your system
  • Improve system stability, especially if Edge is uninstalled 1
  • Boost performance by eliminating unnecessary file associations
  • Improve user control by allowing you to choose the browser you wish to use.

Removing these associations allows you to choose which applications open. This enhances user control, privacy, system stability, and performance.

Caution

Removing these associations will prompt you to choose a default application the next time you open files or URL protocols previously associated with Edge. Remember to set up an alternative browser.

Technical Details

The script affects various file types (such as .htm, .html) and web protocols (e.g., http, https, ftp). It deletes Edge associations from the Windows Registry that control the user-chosen associations.

This action applies to Windows 10 versions from 1909 onward and all versions of Windows 11. Earlier Windows 10 versions (like 1903) do not have these specific Edge associations by default.

The table below shows the availability of Edge associations across different Windows versions, confirmed by tests:

AssociationProgIdTypeWin 10 1903Win 10 1909Win 10 20H2Win 10 21H2Win 10 22H2Win 11 21H2Win 11 22H2Win 11 23H2Registry Path
httpMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice
httpsMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\https\UserChoice
microsoft-edgeMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge\UserChoice
microsoft-edge-holographicMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge-holographic\UserChoice
ms-xbl-3d8b930fMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\ms-xbl-3d8b930f\UserChoice
readMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\read\UserChoice
.htmMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\UserChoice
.htmlMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\UserChoice
.pdfMSEdgePDFFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice
.svgMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg\UserChoice
.mhtMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice
.mhtMSEdgeMHTFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice
.mhtmlMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice
.mhtmlMSEdgeMHTFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice
.xmlMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xml\UserChoice
ftpMSEdgeHTMURLHKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\ftp\UserChoice
.xhtMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xht\UserChoice
.xhtmlMSEdgeHTMFileHKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xhtml\UserChoice

To verify these associations on your system, run this PowerShell command:

$baseRegistryPaths = @(
'HKCU:\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations',
'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts'
)
$results = @()
foreach ($baseKey in $baseRegistryPaths) {
$subKeys = Get-ChildItem -Path $baseKey -ErrorAction SilentlyContinue
foreach ($subKey in $subKeys) {
$userChoicePath = Join-Path $subKey.PSPath 'UserChoice'
if (-Not (Test-Path $userChoicePath)) {
continue
}
$progId = (Get-ItemProperty -Path $userChoicePath -Name ProgId -ErrorAction SilentlyContinue).ProgId
if ($progId -and ($progId -like "MSEdge*")) {
$formattedRegistryPath = $userChoicePath -replace '^Microsoft\.PowerShell\.Core\\Registry::', ''
$results += [PSCustomObject]@{
ProgID = $progId
Association = $subKey.PSChildName
RegistryPath = $formattedRegistryPath
}
}
}
}
$results | Format-Table -AutoSize
Not Advised

This script should only be used by advanced users.

This script is not recommended for daily use as it breaks important functionality.

Consider creating a system restore point before doing any changes.

Sources
PrivacyLearn.com maintains strict sourcing standards for accuracy, integrity and up-to-date content. Our content relies on authoritative sources including vendor documentation, industry standards, and verified research. Learn more about our verification process and quality standards in our editorial standards page.

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Run commands

Copy and run commands manually Requires technical knowledge
Apply changes
:: Remove user-chosen URL association for "MSEdgeHTM" for http URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen URL association for "MSEdgeHTM" for https URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\https\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\https\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen URL association for "MSEdgeHTM" for microsoft-edge URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen URL association for "MSEdgeHTM" for microsoft-edge-holographic URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge-holographic\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\microsoft-edge-holographic\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen URL association for "MSEdgeHTM" for ms-xbl-3d8b930f URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ms-xbl-3d8b930f\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ms-xbl-3d8b930f\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen URL association for "MSEdgeHTM" for read URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\read\UserChoice"
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\read\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen file association for "MSEdgeHTM" for .htm files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .html files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgePDF" for .pdf files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgePDF'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .svg files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-20H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-20H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.svg\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .mht files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-21H2.This operation will not run on Windows versions later than Windows10-MostRecent.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }$versionName = 'Windows10-MostRecent'; $buildNumber = switch ($versionName) { 'Windows11-21H2' { '10.0.22000' }; 'Windows10-MostRecent' { '10.0.19045' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1903' { '10.0.18362' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for maximum Windows '$versionName'"^""; }; }; $maxVersion=[System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -gt $maxVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is above maximum $maxVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeMHT" for .mht files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows11-21H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows11-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mht\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeMHT'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .mhtml files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-21H2.This operation will not run on Windows versions later than Windows10-MostRecent.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }$versionName = 'Windows10-MostRecent'; $buildNumber = switch ($versionName) { 'Windows11-21H2' { '10.0.22000' }; 'Windows10-MostRecent' { '10.0.19045' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1903' { '10.0.18362' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for maximum Windows '$versionName'"^""; }; }; $maxVersion=[System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -gt $maxVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is above maximum $maxVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeMHT" for .mhtml files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows11-21H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows11-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.mhtml\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeMHT'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .xml files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xml\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows10-22H2.This operation will not run on Windows versions later than Windows10-22H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-22H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }$versionName = 'Windows10-22H2'; $buildNumber = switch ($versionName) { 'Windows11-21H2' { '10.0.22000' }; 'Windows10-MostRecent' { '10.0.19045' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1903' { '10.0.18362' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for maximum Windows '$versionName'"^""; }; }; $maxVersion=[System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -gt $maxVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is above maximum $maxVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xml\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xml\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen URL association for "MSEdgeHTM" for ftp URL protocol
:: Delete the registry value "ProgId" from the key "HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ftp\UserChoice"
:: This operation will not run on Windows versions earlier than Windows11-21H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows11-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $keyName = 'HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ftp\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; }"
:: Remove user-chosen file association for "MSEdgeHTM" for .xht files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xht\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows11-21H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows11-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xht\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xht\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
:: Remove user-chosen file association for "MSEdgeHTM" for .xhtml files
:: Delete the registry value "ProgId" from the key "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xhtml\UserChoice" (with additional permissions)
:: This operation will not run on Windows versions earlier than Windows11-21H2.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows11-21H2'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $RawRegistryPath = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xhtml\UserChoice'; $AclChanges = [PSCustomObject]@{ PreviousOwner = $null; RemovedRules = @(); AddedRules = @(); InheritanceDisabled = $false; }; function Test-AccessModified { return $AclChanges.PreviousOwner -Or $AclChanges.RemovedRules.Count -gt 0 -Or $AclChanges.AddedRules.Count -gt 0 -Or $AclChanges.InheritanceDisabled; }; function Open-RegistryKey { param ([Parameter(Mandatory=$true)][int]$Rights); <# [OutputType([Microsoft.Win32.RegistryKey])] # Not working through cmd.exe #>; $hive = $RawRegistryPath.Split('\')[0]; $pathWithoutHive = $RawRegistryPath.Substring($hive.Length + 1); try { $rootKey = switch ($hive) { 'HKCU' { [Microsoft.Win32.Registry]::CurrentUser }; 'HKLM' { [Microsoft.Win32.Registry]::LocalMachine }; default { Write-Error "^""Internal error: Unknown registry hive ($hive)."^""; Exit 1; }; }; $key = $rootKey.OpenSubKey( $pathWithoutHive, [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree, $Rights ); } catch { throw "^""Error when opening '$pathWithoutHive' on '$hive' hive: $_"^""; }; if (-Not $key) { throw "^""Unknown error when opening '$pathWithoutHive' on '$hive' hive."^""; }; return $key; }; function Grant-Permissions { Write-Host "^""Granting permissions to '$RawRegistryPath' registry key."^""; $adminSid = New-Object System.Security.Principal.SecurityIdentifier 'S-1-5-32-544'; $adminAccount = $adminSid.Translate([System.Security.Principal.NTAccount]); try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::TakeOwnership); $acl = $subkey.GetAccessControl(); $owner = $acl.GetOwner([System.Security.Principal.NTAccount]); if ($owner -eq $adminAccount) { $subkey.Close(); } else { $AclChanges.PreviousOwner = $owner; $acl.SetOwner($adminAccount); $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host "^""Successfully took ownership from '$($owner.Value)'."^""; }; } catch { Write-Warning "^""Failed to take ownership. Error: $($_.Exception.Message)"^""; }; try { $subkey = Open-RegistryKey -Rights ([System.Security.AccessControl.RegistryRights]::ChangePermissions); $acl = $subkey.GetAccessControl(); $adminFullControlExists = $acl.Access | Where-Object { $_.IdentityReference -eq $adminAccount -and $_.RegistryRights -eq [System.Security.AccessControl.RegistryRights]::FullControl -and $_.AccessControlType -eq [System.Security.AccessControl.AccessControlType]::Allow }; if (-Not $adminFullControlExists) { Write-Host 'Granting full control to administrators.'; $fullControlRule = New-Object System.Security.AccessControl.RegistryAccessRule( $adminAccount, [System.Security.AccessControl.RegistryRights]::FullControl, [System.Security.AccessControl.AccessControlType]::Allow ); $acl.AddAccessRule($fullControlRule); $AclChanges.AddedRules += $fullControlRule; }; if ($acl.AreAccessRulesProtected) { $acl.SetAccessRuleProtection($false, $false); $AclChanges.InheritanceDisabled = $true; }; $denyRules = @($acl.Access.Where({ $_.AccessControlType -eq 'Deny' })); foreach ($denyRule in $denyRules) { Write-Host "^""Removing a deny rule for '$($denyRule.IdentityReference)'."^""; if ($acl.RemoveAccessRule($denyRule)) { $AclChanges.RemovedRules += $denyRule; } else { Write-Warning 'Failed to remove the rule.'; }; }; if (-Not (Test-AccessModified)) { Write-Host 'No access modifications were necessary.'; $subkey.Close(); } else { $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully applied new access rules.'; }; } catch { Write-Warning "^""Failed to modify access. Error: $($_.Exception.Message)"^""; }; }; function Revoke-Permissions { Write-Host "^""Restoring permissions: '$RawRegistryPath'."^""; if (-Not (Test-AccessModified)) { Write-Host 'Skipping revoking permissions, they were not granted.'; return; } else { try { $subkey = Open-RegistryKey -Rights ( [System.Security.AccessControl.RegistryRights]::TakeOwnership -bor [System.Security.AccessControl.RegistryRights]::ChangePermissions ); $acl = $subkey.GetAccessControl(); if ($AclChanges.PreviousOwner) { Write-Host 'Restoring owner.'; $acl.SetOwner($AclChanges.PreviousOwner); }; foreach ($rule in $AclChanges.AddedRules) { Write-Host "^""Removing rule for '$($rule.IdentityReference)'."^""; if (-Not $acl.RemoveAccessRule($rule)) { Write-Warning 'Failed to remove the rule.'; }; }; foreach ($rule in $AclChanges.RemovedRules) { $acl.AddAccessRule($rule); Write-Host "^""Adding a rule for '$($rule.IdentityReference)'."^""; }; if ($AclChanges.InheritanceDisabled) { $acl.SetAccessRuleProtection($true, $true); Write-Host 'Restoring inheritance.'; }; $subkey.SetAccessControl($acl); $subkey.Close(); Write-Host 'Successfully restored permissions.'; } catch { Write-Warning "^""Failed to restore permissions. Error: $($_.Exception.Message)"^""; }; }; }; $keyName = 'HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.xhtml\UserChoice'; $valueName = 'ProgId'; $hive = $keyName.Split('\')[0]; $path = "^""$($hive):$($keyName.Substring($hive.Length))"^""; Write-Host "^""Removing the registry value '$valueName' from '$path'."^""; if (-Not (Test-Path -LiteralPath $path)) { Write-Host 'Skipping, no action needed, registry key does not exist.'; Exit 0; }; $existingValueNames = (Get-ItemProperty -LiteralPath $path).PSObject.Properties.Name; if (-Not ($existingValueNames -Contains $valueName)) { Write-Host 'Skipping, no action needed, registry value does not exist.'; Exit 0; }; $expectedData = 'MSEdgeHTM'; $currentData = Get-ItemProperty -LiteralPath $path -Name $valueName | Select-Object -ExpandProperty $valueName; if ($currentData -ne $expectedData) { Write-Host "^""Skipping, no action needed, current data '$currentData' is not same as '$expectedData'."^""; Exit 0; }; Grant-Permissions; try { if ($valueName -ieq '(default)') { Write-Host 'Removing the default value.'; $(Get-Item -LiteralPath $path).OpenSubKey('', $true).DeleteValue(''); } else { Remove-ItemProperty -LiteralPath $path -Name $valueName -Force -ErrorAction Stop; }; Write-Host 'Successfully removed the registry value.'; } catch { Write-Error "^""Failed to remove the registry value: $($_.Exception.Message)"^""; } finally { Revoke-Permissions }"
Help

How to apply or restore "Remove Edge user associations" using commands

  • ≈ 2 min to complete
  • Tools: Command Prompt
  • Difficulty: Medium
  • ≈ 3 instructions
View step-by-step guide with screenshots
  1. 1

    Open Command Prompt

    Open Command Prompt as Administrator.
  2. 2

    Copy code

  3. 3

    Paste & run

    Paste the commands into Command Prompt and press Enter to run.

    Some changes require a system restart to take effect

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