Skip to main content

Disable Defender Antivirus AMSI provider

Apply Now
Works with Windows 10 and 11Works with Windows Vista, XP, 7, 8, 10, 11, and Windows Server 2008 or newer.
  • Single actionThis page belongs to a script, containing basic changes to achieve a task.
  • Windows onlyThis script improves your privacy on Windows
  • Impact: HighSystem Functionality 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.
  • 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 disables the Antimalware Scan Interface (AMSI) provider for Defender.

The AMSI provider is part of the Antimalware Scan Interface (AMSI) 1 2. AMSI adds security against malicious scripts in Windows 2. It enables various antivirus programs to scan for script-based attacks 2. AMSI provides interface to integrate antimalware modules 1 3.

By default, Defender uses AMSI to block potentially harmful PowerShell scripts, JavaScript, and VBA macros 2. Windows registers an AMSI provider for Defender Antivirus to enable this functionality 1 2 4 5.

The main file for the AMSI provider is MpOav.dll 1 3 6 7. This file:

  • Collects Defender's health data and logs 8
  • Decides about content from applications 3
  • May inject itself into other processes 8
  • Scans system memory 3

Disabling the Defender AMSI provider may enhance your privacy by limiting the data Defender collects and analyzes. It may also improve system performance by reducing script scanning overhead.

Caution

This script may reduce your security by disabling a protection mechanism against malicious scripts.

Technical Details​

This script removes the following components:

  • COM objects:
    • MpOav.dll COM class (CLSID: {2781761E-28E0-4109-99FE-B9D127C57AFE}) 3 4 5 6
    • Outdated MpOav.dll COM class (CLSID: 2781761E-28E1-4109-99FE-B9D127C57AFE) 7
  • AMSI provider registration at HKLM\SOFTWARE\Microsoft\AMSI\Providers\{2781761E-28E0-4109-99FE-B9D127C57AFE} 2 3 6
  • MpOav.dll File:
    • Current location: %PROGRAMFILES%\Windows Defender\MpOav.dll 4 6.
      • According to tests, this file exists on Windows 10 (≥ 22H2) and Windows 11 (≥ 23H2).
    • Previous locations (no longer used in modern Windows versions and not targeted by this script):
      • %PROGRAMDATA%\Microsoft\Windows Defender\Platform\*\MpOav.dll 1 3 9
      • %PROGRAMFILES%\Microsoft Security Client\MpOAv.dll 7
  • Internet Explorer Related Entries:
    • Current registration: HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E0-4109-99FE-B9D127C57AFE} 5 10
    • Legacy associations:
      • HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E1-4109-99FE-B9D127C57AFE} 7
      • HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Settings\{2781761E-28E1-4109-99FE-B9D127C57AFE} 7
  1. 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.

  2. Security Trade-off

    This action prioritizes privacy over certain security features. It's not recommended and should only be used by advanced users after understanding its implications.

    Increased Privacy

    Enhanced privacy through reduced data collection and tracking

    Decreased Security

    Some security features will be disabled or limited

    This script can be reversed, this allows you to restore the default system security.

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.

Apply Now​

Choose one of three ways to apply:

Download script​

Download and run the script directly
  • No app needed
  • Offline usage
  • Easy-to-apply
  • Free
  • Open-source
Help

How to apply or restore "Disable Defender Antivirus AMSI provider" using script​

  • ≈ 2 min to complete
  • Tools: Web Browser
  • Difficulty: Simple
  • ≈ 5 instructions
  1. 1

    Download

    Download the script file by clicking on the   Apply protection  button above.
    Use   Undo protection button above to restore changes.
  2. 2

    Keep the file

    If warned by your browser, keep the file.
  3. 3

    Open

    Open the downloaded file.
  4. 4

    Exit

    Once it's done, press any key to exit the window.
  5. 5

    Restart

    Restart your computer for all changes to take effect.

Apply with privacy.sexy​

Guided, automated application with safety checks
  • Recommended for most users
  • Includes safety checks
  • Free
  • Open-source
  • Popular
  • Offline/Online usage
Open privacy.sexy
Help

How to apply or restore "Disable Defender Antivirus AMSI provider" using privacy.sexy​

  • ≈ 3 min to complete
  • Tools: privacy.sexy
  • Difficulty: Simple
  • ≈ 4 instructions
privacy.sexy is free and open-source application that lets securely apply this action easily with more advanced options.
  1. 1

    Open or download

    Open or download the desktop application
  2. 2

    Choose script

    1. Search for the script name: Disable Defender Antivirus AMSI provider
    2. Check the script by clicking on the checkbox.
  3. 3

    Run

    Click on ▶️ Run button at the bottom of the page.

    This button only appears on desktop version (recommended). On browser, use 💾 Save button.

Run commands​

Copy and run commands manually Requires technical knowledge
Apply changes
:: Soft-delete the registry key: HKLM\SOFTWARE\Microsoft\AMSI\Providers\{2781761E-28E0-4109-99FE-B9D127C57AFE} 
PowerShell -ExecutionPolicy Unrestricted -Command "function Copy-Acl($Src, $Dst) { $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue); foreach ($key in $srcKeys) { $dstKey = Join-Path $Dst $key.PSChildName; Copy-Acl -Src $key.PSPath -Dst $dstKey; }; $acl = Get-Acl -Path $Src -ErrorAction Stop; $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner); $sddl = $acl.GetSecurityDescriptorSddlForm($sections); $acl.SetSecurityDescriptorSddlForm($sddl, $sections); Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop; }; function Rename-KeyWithAcl($Old, $New) { try { Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop; } catch { throw "^""Failed to copy: $_"^""; }; try { Copy-Acl -Src $Old -Dst $New; } catch { Write-Warning "^""Failed to copy ACL: $_"^""; }; try { Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null; } catch { try { Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null; } catch { Write-Warning "^""Failed to clean up: $_"^""; }; throw "^""Failed to remove: $_"^""; }; }; $rawPath='HKLM\SOFTWARE\Microsoft\AMSI\Providers\{2781761E-28E0-4109-99FE-B9D127C57AFE}'; $suffix='.OLD'; $global:ok = 0; $global:skip = 0; $global:fail = 0; function Rename-KeyTree($Path) { Write-Host "^""Processing key: $Path"^""; if (-Not (Test-Path -LiteralPath $Path)) { Write-Host 'Skipping: Key does not exist.'; $global:skip++; return; }; $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property); foreach ($value in $values) { Write-Host "^""Renaming '$value'"^""; if ($value.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; continue; }; $backupName = $value + $suffix; Write-Host "^""Renaming to '$backupName'."^""; try { Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename value: $_"^""; $global:fail++; }; }; $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue); foreach ($key in $subkeys) { Rename-KeyTree $key.PSPath; }; Write-Host "^""Renaming key '$Path'."^""; if ($Path.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; } else { $backupPath = $Path + $suffix; while (Test-Path -LiteralPath $backupPath) { $backupPath += $suffix; }; Write-Host "^""Renaming to '$backupPath'."^""; try { Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename: $_"^""; $global:fail++; }; }; }; Write-Host "^""Soft deleting registry key '$rawPath' recursively."^""; $hive = $rawPath.Split('\')[0]; $path = $hive + ':' + $rawPath.Substring($hive.Length); Rename-KeyTree $path; $totalItems = $global:ok + $global:skip + $global:fail; Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""; if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) { Write-Host 'No items were processed. The operation had no effect.'; } elseif ($global:fail -eq $totalItems) { throw "^""Operation failed. All $global:fail items could not be processed."^""; } elseif ($global:ok) { Write-Host "^""Successfully processed $global:ok item(s)."^""; }"
:: Soft-delete the registry key: HKLM\SOFTWARE\WOW6432Node\Microsoft\AMSI\Providers\{2781761E-28E0-4109-99FE-B9D127C57AFE} 
PowerShell -ExecutionPolicy Unrestricted -Command "function Copy-Acl($Src, $Dst) { $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue); foreach ($key in $srcKeys) { $dstKey = Join-Path $Dst $key.PSChildName; Copy-Acl -Src $key.PSPath -Dst $dstKey; }; $acl = Get-Acl -Path $Src -ErrorAction Stop; $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner); $sddl = $acl.GetSecurityDescriptorSddlForm($sections); $acl.SetSecurityDescriptorSddlForm($sddl, $sections); Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop; }; function Rename-KeyWithAcl($Old, $New) { try { Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop; } catch { throw "^""Failed to copy: $_"^""; }; try { Copy-Acl -Src $Old -Dst $New; } catch { Write-Warning "^""Failed to copy ACL: $_"^""; }; try { Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null; } catch { try { Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null; } catch { Write-Warning "^""Failed to clean up: $_"^""; }; throw "^""Failed to remove: $_"^""; }; }; $rawPath='HKLM\SOFTWARE\WOW6432Node\Microsoft\AMSI\Providers\{2781761E-28E0-4109-99FE-B9D127C57AFE}'; $suffix='.OLD'; $global:ok = 0; $global:skip = 0; $global:fail = 0; function Rename-KeyTree($Path) { Write-Host "^""Processing key: $Path"^""; if (-Not (Test-Path -LiteralPath $Path)) { Write-Host 'Skipping: Key does not exist.'; $global:skip++; return; }; $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property); foreach ($value in $values) { Write-Host "^""Renaming '$value'"^""; if ($value.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; continue; }; $backupName = $value + $suffix; Write-Host "^""Renaming to '$backupName'."^""; try { Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename value: $_"^""; $global:fail++; }; }; $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue); foreach ($key in $subkeys) { Rename-KeyTree $key.PSPath; }; Write-Host "^""Renaming key '$Path'."^""; if ($Path.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; } else { $backupPath = $Path + $suffix; while (Test-Path -LiteralPath $backupPath) { $backupPath += $suffix; }; Write-Host "^""Renaming to '$backupPath'."^""; try { Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename: $_"^""; $global:fail++; }; }; }; Write-Host "^""Soft deleting registry key '$rawPath' recursively."^""; $hive = $rawPath.Split('\')[0]; $path = $hive + ':' + $rawPath.Substring($hive.Length); Rename-KeyTree $path; $totalItems = $global:ok + $global:skip + $global:fail; Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""; if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) { Write-Host 'No items were processed. The operation had no effect.'; } elseif ($global:fail -eq $totalItems) { throw "^""Operation failed. All $global:fail items could not be processed."^""; } elseif ($global:ok) { Write-Host "^""Successfully processed $global:ok item(s)."^""; }"
:: Soft-delete the registry key: HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E0-4109-99FE-B9D127C57AFE} 
PowerShell -ExecutionPolicy Unrestricted -Command "function Copy-Acl($Src, $Dst) { $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue); foreach ($key in $srcKeys) { $dstKey = Join-Path $Dst $key.PSChildName; Copy-Acl -Src $key.PSPath -Dst $dstKey; }; $acl = Get-Acl -Path $Src -ErrorAction Stop; $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner); $sddl = $acl.GetSecurityDescriptorSddlForm($sections); $acl.SetSecurityDescriptorSddlForm($sddl, $sections); Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop; }; function Rename-KeyWithAcl($Old, $New) { try { Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop; } catch { throw "^""Failed to copy: $_"^""; }; try { Copy-Acl -Src $Old -Dst $New; } catch { Write-Warning "^""Failed to copy ACL: $_"^""; }; try { Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null; } catch { try { Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null; } catch { Write-Warning "^""Failed to clean up: $_"^""; }; throw "^""Failed to remove: $_"^""; }; }; $rawPath='HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E0-4109-99FE-B9D127C57AFE}'; $suffix='.OLD'; $global:ok = 0; $global:skip = 0; $global:fail = 0; function Rename-KeyTree($Path) { Write-Host "^""Processing key: $Path"^""; if (-Not (Test-Path -LiteralPath $Path)) { Write-Host 'Skipping: Key does not exist.'; $global:skip++; return; }; $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property); foreach ($value in $values) { Write-Host "^""Renaming '$value'"^""; if ($value.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; continue; }; $backupName = $value + $suffix; Write-Host "^""Renaming to '$backupName'."^""; try { Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename value: $_"^""; $global:fail++; }; }; $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue); foreach ($key in $subkeys) { Rename-KeyTree $key.PSPath; }; Write-Host "^""Renaming key '$Path'."^""; if ($Path.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; } else { $backupPath = $Path + $suffix; while (Test-Path -LiteralPath $backupPath) { $backupPath += $suffix; }; Write-Host "^""Renaming to '$backupPath'."^""; try { Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename: $_"^""; $global:fail++; }; }; }; Write-Host "^""Soft deleting registry key '$rawPath' recursively."^""; $hive = $rawPath.Split('\')[0]; $path = $hive + ':' + $rawPath.Substring($hive.Length); Rename-KeyTree $path; $totalItems = $global:ok + $global:skip + $global:fail; Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""; if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) { Write-Host 'No items were processed. The operation had no effect.'; } elseif ($global:fail -eq $totalItems) { throw "^""Operation failed. All $global:fail items could not be processed."^""; } elseif ($global:ok) { Write-Host "^""Successfully processed $global:ok item(s)."^""; }"
:: Soft-delete the registry key: HKLM\Software\Classes\CLSID\{2781761E-28E0-4109-99FE-B9D127C57AFE} as TrustedInstaller
PowerShell -ExecutionPolicy Unrestricted -Command "function Invoke-AsTrustedInstaller($Script) { $principalSid = [System.Security.Principal.SecurityIdentifier]::new('S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464'); $principalName = $principalSid.Translate([System.Security.Principal.NTAccount]); $streamFile = New-TemporaryFile; $scriptFile = New-TemporaryFile; try { $scriptFile = Rename-Item -LiteralPath $scriptFile -NewName ($scriptFile.BaseName + '.ps1') -Force -PassThru; $Script | Out-File $scriptFile -Encoding UTF8; $taskName = "^""privacy$([char]0x002E)sexy invoke"^""; schtasks.exe /delete /tn $taskName /f 2>&1 | Out-Null; $executionCommand = "^""powershell.exe -ExecutionPolicy Bypass -File '$scriptFile' *>&1 | Out-File -FilePath '$streamFile' -Encoding UTF8"^""; $action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument "^""-ExecutionPolicy Bypass -Command `"^""$executionCommand`"^"""^""; $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries; Register-ScheduledTask -TaskName $taskName -Action $action -Settings $settings -Force -ErrorAction Stop | Out-Null; try { ($scheduleService = New-Object -ComObject Schedule.Service).Connect(); $scheduleService.GetFolder('\').GetTask($taskName).RunEx($null, 0, 0, $principalName) | Out-Null; $timeout = (Get-Date).AddMinutes(5); Write-Host "^""Running as $principalName"^""; while ((Get-ScheduledTaskInfo $taskName).LastTaskResult -eq 267009) { Start-Sleep -Milliseconds 200; if ((Get-Date) -gt $timeout) { Write-Warning 'Skipping: Timeout'; break; }; }; if (($result = (Get-ScheduledTaskInfo $taskName).LastTaskResult) -ne 0) { Write-Error "^""Failed, due to exit code: $result."^""; } } finally { schtasks.exe /delete /tn $taskName /f | Out-Null; }; Get-Content $streamFile } finally { Remove-Item $streamFile, $scriptFile; }; }; $cmd = 'function Copy-Acl($Src, $Dst) {'+"^""`r`n"^""+'    $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $srcKeys) {'+"^""`r`n"^""+'        $dstKey = Join-Path $Dst $key.PSChildName'+"^""`r`n"^""+'        Copy-Acl -Src $key.PSPath -Dst $dstKey'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $acl = Get-Acl -Path $Src -ErrorAction Stop'+"^""`r`n"^""+'    $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner)'+"^""`r`n"^""+'    $sddl = $acl.GetSecurityDescriptorSddlForm($sections)'+"^""`r`n"^""+'    $acl.SetSecurityDescriptorSddlForm($sddl, $sections)'+"^""`r`n"^""+'    Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop'+"^""`r`n"^""+'}'+"^""`r`n"^""+'function Rename-KeyWithAcl($Old, $New) {'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        throw "^""Failed to copy: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Acl -Src $Old -Dst $New'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        Write-Warning "^""Failed to copy ACL: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to clean up: $_"^""'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        throw "^""Failed to remove: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'$rawPath=''HKLM\Software\Classes\CLSID\{2781761E-28E0-4109-99FE-B9D127C57AFE}'''+"^""`r`n"^""+'$suffix=''.OLD'''+"^""`r`n"^""+'$global:ok = 0'+"^""`r`n"^""+'$global:skip = 0'+"^""`r`n"^""+'$global:fail = 0'+"^""`r`n"^""+'function Rename-KeyTree($Path) {'+"^""`r`n"^""+'    Write-Host "^""Processing key: $Path"^""'+"^""`r`n"^""+'    if (-Not (Test-Path -LiteralPath $Path)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Key does not exist.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'        return'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property)'+"^""`r`n"^""+'    foreach ($value in $values) {'+"^""`r`n"^""+'        Write-Host "^""Renaming ''$value''"^""'+"^""`r`n"^""+'        if ($value.EndsWith($suffix)) {'+"^""`r`n"^""+'            Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'            $global:skip++'+"^""`r`n"^""+'            continue'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        $backupName = $value + $suffix'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupName''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename value: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $subkeys) {'+"^""`r`n"^""+'        Rename-KeyTree $key.PSPath'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    Write-Host "^""Renaming key ''$Path''."^""'+"^""`r`n"^""+'    if ($Path.EndsWith($suffix)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'    } else {'+"^""`r`n"^""+'        $backupPath = $Path + $suffix'+"^""`r`n"^""+'        while (Test-Path -LiteralPath $backupPath) {'+"^""`r`n"^""+'            $backupPath += $suffix'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupPath''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'Write-Host "^""Soft deleting registry key ''$rawPath'' recursively."^""'+"^""`r`n"^""+'$hive = $rawPath.Split(''\'')[0]'+"^""`r`n"^""+'$path = $hive + '':'' + $rawPath.Substring($hive.Length)'+"^""`r`n"^""+'Rename-KeyTree $path'+"^""`r`n"^""+'$totalItems = $global:ok + $global:skip + $global:fail'+"^""`r`n"^""+'Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""'+"^""`r`n"^""+'if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) {'+"^""`r`n"^""+'    Write-Host ''No items were processed. The operation had no effect.'''+"^""`r`n"^""+'} elseif ($global:fail -eq $totalItems) {'+"^""`r`n"^""+'    throw "^""Operation failed. All $global:fail items could not be processed."^""'+"^""`r`n"^""+'} elseif ($global:ok) {'+"^""`r`n"^""+'    Write-Host "^""Successfully processed $global:ok item(s)."^""'+"^""`r`n"^""+'}'; Invoke-AsTrustedInstaller $cmd"
:: Soft-delete the registry key: HKLM\Software\Classes\WOW6432Node\CLSID\{2781761E-28E0-4109-99FE-B9D127C57AFE} as TrustedInstaller
PowerShell -ExecutionPolicy Unrestricted -Command "function Invoke-AsTrustedInstaller($Script) { $principalSid = [System.Security.Principal.SecurityIdentifier]::new('S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464'); $principalName = $principalSid.Translate([System.Security.Principal.NTAccount]); $streamFile = New-TemporaryFile; $scriptFile = New-TemporaryFile; try { $scriptFile = Rename-Item -LiteralPath $scriptFile -NewName ($scriptFile.BaseName + '.ps1') -Force -PassThru; $Script | Out-File $scriptFile -Encoding UTF8; $taskName = "^""privacy$([char]0x002E)sexy invoke"^""; schtasks.exe /delete /tn $taskName /f 2>&1 | Out-Null; $executionCommand = "^""powershell.exe -ExecutionPolicy Bypass -File '$scriptFile' *>&1 | Out-File -FilePath '$streamFile' -Encoding UTF8"^""; $action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument "^""-ExecutionPolicy Bypass -Command `"^""$executionCommand`"^"""^""; $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries; Register-ScheduledTask -TaskName $taskName -Action $action -Settings $settings -Force -ErrorAction Stop | Out-Null; try { ($scheduleService = New-Object -ComObject Schedule.Service).Connect(); $scheduleService.GetFolder('\').GetTask($taskName).RunEx($null, 0, 0, $principalName) | Out-Null; $timeout = (Get-Date).AddMinutes(5); Write-Host "^""Running as $principalName"^""; while ((Get-ScheduledTaskInfo $taskName).LastTaskResult -eq 267009) { Start-Sleep -Milliseconds 200; if ((Get-Date) -gt $timeout) { Write-Warning 'Skipping: Timeout'; break; }; }; if (($result = (Get-ScheduledTaskInfo $taskName).LastTaskResult) -ne 0) { Write-Error "^""Failed, due to exit code: $result."^""; } } finally { schtasks.exe /delete /tn $taskName /f | Out-Null; }; Get-Content $streamFile } finally { Remove-Item $streamFile, $scriptFile; }; }; $cmd = 'function Copy-Acl($Src, $Dst) {'+"^""`r`n"^""+'    $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $srcKeys) {'+"^""`r`n"^""+'        $dstKey = Join-Path $Dst $key.PSChildName'+"^""`r`n"^""+'        Copy-Acl -Src $key.PSPath -Dst $dstKey'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $acl = Get-Acl -Path $Src -ErrorAction Stop'+"^""`r`n"^""+'    $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner)'+"^""`r`n"^""+'    $sddl = $acl.GetSecurityDescriptorSddlForm($sections)'+"^""`r`n"^""+'    $acl.SetSecurityDescriptorSddlForm($sddl, $sections)'+"^""`r`n"^""+'    Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop'+"^""`r`n"^""+'}'+"^""`r`n"^""+'function Rename-KeyWithAcl($Old, $New) {'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        throw "^""Failed to copy: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Acl -Src $Old -Dst $New'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        Write-Warning "^""Failed to copy ACL: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to clean up: $_"^""'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        throw "^""Failed to remove: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'$rawPath=''HKLM\Software\Classes\WOW6432Node\CLSID\{2781761E-28E0-4109-99FE-B9D127C57AFE}'''+"^""`r`n"^""+'$suffix=''.OLD'''+"^""`r`n"^""+'$global:ok = 0'+"^""`r`n"^""+'$global:skip = 0'+"^""`r`n"^""+'$global:fail = 0'+"^""`r`n"^""+'function Rename-KeyTree($Path) {'+"^""`r`n"^""+'    Write-Host "^""Processing key: $Path"^""'+"^""`r`n"^""+'    if (-Not (Test-Path -LiteralPath $Path)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Key does not exist.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'        return'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property)'+"^""`r`n"^""+'    foreach ($value in $values) {'+"^""`r`n"^""+'        Write-Host "^""Renaming ''$value''"^""'+"^""`r`n"^""+'        if ($value.EndsWith($suffix)) {'+"^""`r`n"^""+'            Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'            $global:skip++'+"^""`r`n"^""+'            continue'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        $backupName = $value + $suffix'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupName''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename value: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $subkeys) {'+"^""`r`n"^""+'        Rename-KeyTree $key.PSPath'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    Write-Host "^""Renaming key ''$Path''."^""'+"^""`r`n"^""+'    if ($Path.EndsWith($suffix)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'    } else {'+"^""`r`n"^""+'        $backupPath = $Path + $suffix'+"^""`r`n"^""+'        while (Test-Path -LiteralPath $backupPath) {'+"^""`r`n"^""+'            $backupPath += $suffix'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupPath''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'Write-Host "^""Soft deleting registry key ''$rawPath'' recursively."^""'+"^""`r`n"^""+'$hive = $rawPath.Split(''\'')[0]'+"^""`r`n"^""+'$path = $hive + '':'' + $rawPath.Substring($hive.Length)'+"^""`r`n"^""+'Rename-KeyTree $path'+"^""`r`n"^""+'$totalItems = $global:ok + $global:skip + $global:fail'+"^""`r`n"^""+'Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""'+"^""`r`n"^""+'if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) {'+"^""`r`n"^""+'    Write-Host ''No items were processed. The operation had no effect.'''+"^""`r`n"^""+'} elseif ($global:fail -eq $totalItems) {'+"^""`r`n"^""+'    throw "^""Operation failed. All $global:fail items could not be processed."^""'+"^""`r`n"^""+'} elseif ($global:ok) {'+"^""`r`n"^""+'    Write-Host "^""Successfully processed $global:ok item(s)."^""'+"^""`r`n"^""+'}'; Invoke-AsTrustedInstaller $cmd"
:: Soft delete files matching pattern: "%PROGRAMFILES%\Windows Defender\MpOav.dll"  as TrustedInstaller
PowerShell -ExecutionPolicy Unrestricted -Command "function Invoke-AsTrustedInstaller($Script) { $principalSid = [System.Security.Principal.SecurityIdentifier]::new('S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464'); $principalName = $principalSid.Translate([System.Security.Principal.NTAccount]); $streamFile = New-TemporaryFile; $scriptFile = New-TemporaryFile; try { $scriptFile = Rename-Item -LiteralPath $scriptFile -NewName ($scriptFile.BaseName + '.ps1') -Force -PassThru; $Script | Out-File $scriptFile -Encoding UTF8; $taskName = "^""privacy$([char]0x002E)sexy invoke"^""; schtasks.exe /delete /tn $taskName /f 2>&1 | Out-Null; $executionCommand = "^""powershell.exe -ExecutionPolicy Bypass -File '$scriptFile' *>&1 | Out-File -FilePath '$streamFile' -Encoding UTF8"^""; $action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument "^""-ExecutionPolicy Bypass -Command `"^""$executionCommand`"^"""^""; $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries; Register-ScheduledTask -TaskName $taskName -Action $action -Settings $settings -Force -ErrorAction Stop | Out-Null; try { ($scheduleService = New-Object -ComObject Schedule.Service).Connect(); $scheduleService.GetFolder('\').GetTask($taskName).RunEx($null, 0, 0, $principalName) | Out-Null; $timeout = (Get-Date).AddMinutes(5); Write-Host "^""Running as $principalName"^""; while ((Get-ScheduledTaskInfo $taskName).LastTaskResult -eq 267009) { Start-Sleep -Milliseconds 200; if ((Get-Date) -gt $timeout) { Write-Warning 'Skipping: Timeout'; break; }; }; if (($result = (Get-ScheduledTaskInfo $taskName).LastTaskResult) -ne 0) { Write-Error "^""Failed, due to exit code: $result."^""; } } finally { schtasks.exe /delete /tn $taskName /f | Out-Null; }; Get-Content $streamFile } finally { Remove-Item $streamFile, $scriptFile; }; }; $cmd = '$pathGlobPattern = "^""%PROGRAMFILES%\Windows Defender\MpOav.dll"^""'+"^""`r`n"^""+'$expandedPath = [System.Environment]::ExpandEnvironmentVariables($pathGlobPattern)'+"^""`r`n"^""+'Write-Host "^""Searching for items matching pattern: `"^""$($expandedPath)`"^""."^""'+"^""`r`n"^""+''+"^""`r`n"^""+'$renamedCount   = 0'+"^""`r`n"^""+'$skippedCount   = 0'+"^""`r`n"^""+'$failedCount    = 0'+"^""`r`n"^""+''+"^""`r`n"^""+'$foundAbsolutePaths = @()'+"^""`r`n"^""+''+"^""`r`n"^""+'try {'+"^""`r`n"^""+'    $foundAbsolutePaths += @('+"^""`r`n"^""+'        Get-Item -Path $expandedPath -ErrorAction Stop | Select-Object -ExpandProperty FullName'+"^""`r`n"^""+'    )'+"^""`r`n"^""+'} catch [System.Management.Automation.ItemNotFoundException] {'+"^""`r`n"^""+'    <# Swallow, do not run `Test-Path` before, it''s unreliable for globs requiring extra permissions #>'+"^""`r`n"^""+'}'+"^""`r`n"^""+'$foundAbsolutePaths = $foundAbsolutePaths   `'+"^""`r`n"^""+'    | Select-Object -Unique                 `'+"^""`r`n"^""+'    | Sort-Object -Property { $_.Length } -Descending'+"^""`r`n"^""+'if (!$foundAbsolutePaths) {'+"^""`r`n"^""+'    Write-Host ''Skipping, no items available.'''+"^""`r`n"^""+'    exit 0'+"^""`r`n"^""+'}'+"^""`r`n"^""+'Write-Host "^""Initiating processing of $($foundAbsolutePaths.Count) items from `"^""$expandedPath`"^""."^""'+"^""`r`n"^""+'foreach ($path in $foundAbsolutePaths) {'+"^""`r`n"^""+'    if (Test-Path -Path $path -PathType Container) {'+"^""`r`n"^""+'    Write-Host "^""Skipping folder (not its contents): `"^""$path`"^""."^""'+"^""`r`n"^""+'    $skippedCount++'+"^""`r`n"^""+'    continue'+"^""`r`n"^""+'}'+"^""`r`n"^""+'if($revert -eq $true) {'+"^""`r`n"^""+'    if (-not $path.EndsWith(''.OLD'')) {'+"^""`r`n"^""+'        Write-Host "^""Skipping non-backup file: `"^""$path`"^""."^""'+"^""`r`n"^""+'        $skippedCount++'+"^""`r`n"^""+'        continue'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'} else {'+"^""`r`n"^""+'    if ($path.EndsWith(''.OLD'')) {'+"^""`r`n"^""+'        Write-Host "^""Skipping backup file: `"^""$path`"^""."^""'+"^""`r`n"^""+'        $skippedCount++'+"^""`r`n"^""+'        continue'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'$originalFilePath = $path'+"^""`r`n"^""+'Write-Host "^""Processing file: `"^""$originalFilePath`"^""."^""'+"^""`r`n"^""+'if (-Not (Test-Path $originalFilePath)) {'+"^""`r`n"^""+'    Write-Host "^""Skipping, file `"^""$originalFilePath`"^"" not found."^""'+"^""`r`n"^""+'    $skippedCount++'+"^""`r`n"^""+'    exit 0'+"^""`r`n"^""+'}'+"^""`r`n"^""+''+"^""`r`n"^""+'if ($revert -eq $true) {'+"^""`r`n"^""+'    $newFilePath = $originalFilePath.Substring(0, $originalFilePath.Length - 4)'+"^""`r`n"^""+'} else {'+"^""`r`n"^""+'    $newFilePath = "^""$($originalFilePath).OLD"^""'+"^""`r`n"^""+'}'+"^""`r`n"^""+'try {'+"^""`r`n"^""+'    Move-Item -LiteralPath "^""$($originalFilePath)"^"" -Destination "^""$newFilePath"^"" -Force -ErrorAction Stop'+"^""`r`n"^""+'    Write-Host "^""Successfully processed `"^""$originalFilePath`"^""."^""'+"^""`r`n"^""+'    $renamedCount++'+"^""`r`n"^""+'    '+"^""`r`n"^""+'} catch {'+"^""`r`n"^""+'    Write-Error "^""Failed to rename `"^""$originalFilePath`"^"" to `"^""$newFilePath`"^"": $($_.Exception.Message)"^""'+"^""`r`n"^""+'    $failedCount++'+"^""`r`n"^""+'    '+"^""`r`n"^""+'}'+"^""`r`n"^""+'}'+"^""`r`n"^""+'if (($renamedCount -gt 0) -or ($skippedCount -gt 0)) {'+"^""`r`n"^""+'    Write-Host "^""Successfully processed $renamedCount items and skipped $skippedCount items."^""'+"^""`r`n"^""+'}'+"^""`r`n"^""+'if ($failedCount -gt 0) {'+"^""`r`n"^""+'    Write-Warning "^""Failed to process $($failedCount) items."^""'+"^""`r`n"^""+'}'+"^""`r`n"^""+''; Invoke-AsTrustedInstaller $cmd"
:: Soft-delete the registry key: HKLM\Software\Classes\CLSID\{2781761E-28E1-4109-99FE-B9D127C57AFE} as TrustedInstaller
PowerShell -ExecutionPolicy Unrestricted -Command "function Invoke-AsTrustedInstaller($Script) { $principalSid = [System.Security.Principal.SecurityIdentifier]::new('S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464'); $principalName = $principalSid.Translate([System.Security.Principal.NTAccount]); $streamFile = New-TemporaryFile; $scriptFile = New-TemporaryFile; try { $scriptFile = Rename-Item -LiteralPath $scriptFile -NewName ($scriptFile.BaseName + '.ps1') -Force -PassThru; $Script | Out-File $scriptFile -Encoding UTF8; $taskName = "^""privacy$([char]0x002E)sexy invoke"^""; schtasks.exe /delete /tn $taskName /f 2>&1 | Out-Null; $executionCommand = "^""powershell.exe -ExecutionPolicy Bypass -File '$scriptFile' *>&1 | Out-File -FilePath '$streamFile' -Encoding UTF8"^""; $action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument "^""-ExecutionPolicy Bypass -Command `"^""$executionCommand`"^"""^""; $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries; Register-ScheduledTask -TaskName $taskName -Action $action -Settings $settings -Force -ErrorAction Stop | Out-Null; try { ($scheduleService = New-Object -ComObject Schedule.Service).Connect(); $scheduleService.GetFolder('\').GetTask($taskName).RunEx($null, 0, 0, $principalName) | Out-Null; $timeout = (Get-Date).AddMinutes(5); Write-Host "^""Running as $principalName"^""; while ((Get-ScheduledTaskInfo $taskName).LastTaskResult -eq 267009) { Start-Sleep -Milliseconds 200; if ((Get-Date) -gt $timeout) { Write-Warning 'Skipping: Timeout'; break; }; }; if (($result = (Get-ScheduledTaskInfo $taskName).LastTaskResult) -ne 0) { Write-Error "^""Failed, due to exit code: $result."^""; } } finally { schtasks.exe /delete /tn $taskName /f | Out-Null; }; Get-Content $streamFile } finally { Remove-Item $streamFile, $scriptFile; }; }; $cmd = 'function Copy-Acl($Src, $Dst) {'+"^""`r`n"^""+'    $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $srcKeys) {'+"^""`r`n"^""+'        $dstKey = Join-Path $Dst $key.PSChildName'+"^""`r`n"^""+'        Copy-Acl -Src $key.PSPath -Dst $dstKey'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $acl = Get-Acl -Path $Src -ErrorAction Stop'+"^""`r`n"^""+'    $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner)'+"^""`r`n"^""+'    $sddl = $acl.GetSecurityDescriptorSddlForm($sections)'+"^""`r`n"^""+'    $acl.SetSecurityDescriptorSddlForm($sddl, $sections)'+"^""`r`n"^""+'    Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop'+"^""`r`n"^""+'}'+"^""`r`n"^""+'function Rename-KeyWithAcl($Old, $New) {'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        throw "^""Failed to copy: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Copy-Acl -Src $Old -Dst $New'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        Write-Warning "^""Failed to copy ACL: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    try {'+"^""`r`n"^""+'        Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'    } catch {'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to clean up: $_"^""'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        throw "^""Failed to remove: $_"^""'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'$rawPath=''HKLM\Software\Classes\CLSID\{2781761E-28E1-4109-99FE-B9D127C57AFE}'''+"^""`r`n"^""+'$suffix=''.OLD'''+"^""`r`n"^""+'$global:ok = 0'+"^""`r`n"^""+'$global:skip = 0'+"^""`r`n"^""+'$global:fail = 0'+"^""`r`n"^""+'function Rename-KeyTree($Path) {'+"^""`r`n"^""+'    Write-Host "^""Processing key: $Path"^""'+"^""`r`n"^""+'    if (-Not (Test-Path -LiteralPath $Path)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Key does not exist.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'        return'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property)'+"^""`r`n"^""+'    foreach ($value in $values) {'+"^""`r`n"^""+'        Write-Host "^""Renaming ''$value''"^""'+"^""`r`n"^""+'        if ($value.EndsWith($suffix)) {'+"^""`r`n"^""+'            Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'            $global:skip++'+"^""`r`n"^""+'            continue'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        $backupName = $value + $suffix'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupName''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename value: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue)'+"^""`r`n"^""+'    foreach ($key in $subkeys) {'+"^""`r`n"^""+'        Rename-KeyTree $key.PSPath'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'    Write-Host "^""Renaming key ''$Path''."^""'+"^""`r`n"^""+'    if ($Path.EndsWith($suffix)) {'+"^""`r`n"^""+'        Write-Host ''Skipping: Has suffix.'''+"^""`r`n"^""+'        $global:skip++'+"^""`r`n"^""+'    } else {'+"^""`r`n"^""+'        $backupPath = $Path + $suffix'+"^""`r`n"^""+'        while (Test-Path -LiteralPath $backupPath) {'+"^""`r`n"^""+'            $backupPath += $suffix'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'        Write-Host "^""Renaming to ''$backupPath''."^""'+"^""`r`n"^""+'        try {'+"^""`r`n"^""+'            Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop'+"^""`r`n"^""+'            Write-Host ''Successfully renamed.'''+"^""`r`n"^""+'            $global:ok++'+"^""`r`n"^""+'        } catch {'+"^""`r`n"^""+'            Write-Warning "^""Failed to rename: $_"^""'+"^""`r`n"^""+'            $global:fail++'+"^""`r`n"^""+'        }'+"^""`r`n"^""+'    }'+"^""`r`n"^""+'}'+"^""`r`n"^""+'Write-Host "^""Soft deleting registry key ''$rawPath'' recursively."^""'+"^""`r`n"^""+'$hive = $rawPath.Split(''\'')[0]'+"^""`r`n"^""+'$path = $hive + '':'' + $rawPath.Substring($hive.Length)'+"^""`r`n"^""+'Rename-KeyTree $path'+"^""`r`n"^""+'$totalItems = $global:ok + $global:skip + $global:fail'+"^""`r`n"^""+'Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""'+"^""`r`n"^""+'if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) {'+"^""`r`n"^""+'    Write-Host ''No items were processed. The operation had no effect.'''+"^""`r`n"^""+'} elseif ($global:fail -eq $totalItems) {'+"^""`r`n"^""+'    throw "^""Operation failed. All $global:fail items could not be processed."^""'+"^""`r`n"^""+'} elseif ($global:ok) {'+"^""`r`n"^""+'    Write-Host "^""Successfully processed $global:ok item(s)."^""'+"^""`r`n"^""+'}'; Invoke-AsTrustedInstaller $cmd"
:: Soft-delete the registry key: HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E1-4109-99FE-B9D127C57AFE} 
PowerShell -ExecutionPolicy Unrestricted -Command "function Copy-Acl($Src, $Dst) { $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue); foreach ($key in $srcKeys) { $dstKey = Join-Path $Dst $key.PSChildName; Copy-Acl -Src $key.PSPath -Dst $dstKey; }; $acl = Get-Acl -Path $Src -ErrorAction Stop; $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner); $sddl = $acl.GetSecurityDescriptorSddlForm($sections); $acl.SetSecurityDescriptorSddlForm($sddl, $sections); Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop; }; function Rename-KeyWithAcl($Old, $New) { try { Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop; } catch { throw "^""Failed to copy: $_"^""; }; try { Copy-Acl -Src $Old -Dst $New; } catch { Write-Warning "^""Failed to copy ACL: $_"^""; }; try { Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null; } catch { try { Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null; } catch { Write-Warning "^""Failed to clean up: $_"^""; }; throw "^""Failed to remove: $_"^""; }; }; $rawPath='HKLM\SOFTWARE\Microsoft\Internet Explorer\Extension Validation\{2781761E-28E1-4109-99FE-B9D127C57AFE}'; $suffix='.OLD'; $global:ok = 0; $global:skip = 0; $global:fail = 0; function Rename-KeyTree($Path) { Write-Host "^""Processing key: $Path"^""; if (-Not (Test-Path -LiteralPath $Path)) { Write-Host 'Skipping: Key does not exist.'; $global:skip++; return; }; $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property); foreach ($value in $values) { Write-Host "^""Renaming '$value'"^""; if ($value.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; continue; }; $backupName = $value + $suffix; Write-Host "^""Renaming to '$backupName'."^""; try { Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename value: $_"^""; $global:fail++; }; }; $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue); foreach ($key in $subkeys) { Rename-KeyTree $key.PSPath; }; Write-Host "^""Renaming key '$Path'."^""; if ($Path.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; } else { $backupPath = $Path + $suffix; while (Test-Path -LiteralPath $backupPath) { $backupPath += $suffix; }; Write-Host "^""Renaming to '$backupPath'."^""; try { Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename: $_"^""; $global:fail++; }; }; }; Write-Host "^""Soft deleting registry key '$rawPath' recursively."^""; $hive = $rawPath.Split('\')[0]; $path = $hive + ':' + $rawPath.Substring($hive.Length); Rename-KeyTree $path; $totalItems = $global:ok + $global:skip + $global:fail; Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""; if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) { Write-Host 'No items were processed. The operation had no effect.'; } elseif ($global:fail -eq $totalItems) { throw "^""Operation failed. All $global:fail items could not be processed."^""; } elseif ($global:ok) { Write-Host "^""Successfully processed $global:ok item(s)."^""; }"
:: Soft-delete the registry key: HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{2781761E-28E1-4109-99FE-B9D127C57AFE} 
PowerShell -ExecutionPolicy Unrestricted -Command "function Copy-Acl($Src, $Dst) { $srcKeys = @(Get-ChildItem -LiteralPath $Src -ErrorAction SilentlyContinue); foreach ($key in $srcKeys) { $dstKey = Join-Path $Dst $key.PSChildName; Copy-Acl -Src $key.PSPath -Dst $dstKey; }; $acl = Get-Acl -Path $Src -ErrorAction Stop; $sections = [System.Security.AccessControl.AccessControlSections]::All -band (-bnot [System.Security.AccessControl.AccessControlSections]::Owner); $sddl = $acl.GetSecurityDescriptorSddlForm($sections); $acl.SetSecurityDescriptorSddlForm($sddl, $sections); Set-Acl -Path $Dst -AclObject $acl -ErrorAction Stop; }; function Rename-KeyWithAcl($Old, $New) { try { Copy-Item -LiteralPath $Old -Destination $New -Recurse -Force -ErrorAction Stop; } catch { throw "^""Failed to copy: $_"^""; }; try { Copy-Acl -Src $Old -Dst $New; } catch { Write-Warning "^""Failed to copy ACL: $_"^""; }; try { Remove-Item -LiteralPath $Old -Force -Recurse -ErrorAction Stop | Out-Null; } catch { try { Remove-Item -LiteralPath $New -Force -Recurse -ErrorAction Stop | Out-Null; } catch { Write-Warning "^""Failed to clean up: $_"^""; }; throw "^""Failed to remove: $_"^""; }; }; $rawPath='HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{2781761E-28E1-4109-99FE-B9D127C57AFE}'; $suffix='.OLD'; $global:ok = 0; $global:skip = 0; $global:fail = 0; function Rename-KeyTree($Path) { Write-Host "^""Processing key: $Path"^""; if (-Not (Test-Path -LiteralPath $Path)) { Write-Host 'Skipping: Key does not exist.'; $global:skip++; return; }; $values = (Get-Item -LiteralPath $Path -ErrorAction Stop | Select-Object -ExpandProperty Property); foreach ($value in $values) { Write-Host "^""Renaming '$value'"^""; if ($value.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; continue; }; $backupName = $value + $suffix; Write-Host "^""Renaming to '$backupName'."^""; try { Rename-ItemProperty -LiteralPath $Path -Name $value -NewName $backupName -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename value: $_"^""; $global:fail++; }; }; $subkeys = @(Get-ChildItem -LiteralPath $Path -ErrorAction SilentlyContinue); foreach ($key in $subkeys) { Rename-KeyTree $key.PSPath; }; Write-Host "^""Renaming key '$Path'."^""; if ($Path.EndsWith($suffix)) { Write-Host 'Skipping: Has suffix.'; $global:skip++; } else { $backupPath = $Path + $suffix; while (Test-Path -LiteralPath $backupPath) { $backupPath += $suffix; }; Write-Host "^""Renaming to '$backupPath'."^""; try { Rename-KeyWithAcl -Old $Path -New $backupPath -ErrorAction Stop; Write-Host 'Successfully renamed.'; $global:ok++; } catch { Write-Warning "^""Failed to rename: $_"^""; $global:fail++; }; }; }; Write-Host "^""Soft deleting registry key '$rawPath' recursively."^""; $hive = $rawPath.Split('\')[0]; $path = $hive + ':' + $rawPath.Substring($hive.Length); Rename-KeyTree $path; $totalItems = $global:ok + $global:skip + $global:fail; Write-Host "^""Total items: $totalItems, Renamed: $global:ok, Skipped: $global:skip, Failed: $global:fail"^""; if (($totalItems -eq 0) -or ($totalItems -eq $global:skip)) { Write-Host 'No items were processed. The operation had no effect.'; } elseif ($global:fail -eq $totalItems) { throw "^""Operation failed. All $global:fail items could not be processed."^""; } elseif ($global:ok) { Write-Host "^""Successfully processed $global:ok item(s)."^""; }"
Help

How to apply or restore "Disable Defender Antivirus AMSI provider" 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

    Copy the code:
    Copy Apply Code Copy Revert 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

Similar Guides​

Wider Goal​

Guides below includes this guide to achieve a wider goal.See other more general settings that includes this one as one of its actions.
These plans combine multiple privacy settings, including this one, for stronger protection.
This category contains scripts that disable various components of the Antimalware Scan Interface (AMSI) in Windows. AMSI is a standard interface that all...

— Disable Antimalware Scan Interface (AMSI)

Same Goal​

Other guides in Disable Antimalware Scan Interface (AMSI) See settings that are in the same category as this guide.
Using other actions in the same category may help you achieve your goal better.
Disable Defender Antivirus UAC AMSI provider
Disable Antimalware Scan Interface (AMSI) for current user

About the Creators​

These people have authored this documentation and written its scripts:

  • Avatar of undergroundwires. The creator of PrivacyLearn and privacy.sexy. Black and white portrait showing a person wearing a polka dot tie and suit jacket, reflecting the professional expertise behind the privacy protection tools.
    • Certified security professional
    • 7+ years experience securing banks
    • Open-source developer since 2005
    • EU advisor, Public Speaker, Moderator
    • Hundreds across the globe
    • Testers, reviewers, developers
    • Companies, military agencies
    • Community since 2017
About Us

Reviewed By​

This guide has undergone comprehensive auditing and peer review:

  • Expert review by undergroundwires​

    • Verified technical accuracy and editorial standards
    • Assessed system impact and user privacy risks
    • Audited and verified using automated security tests

  • Public review by large community​

    • Privacy enthusiasts and professionals peer-reviewed
    • Millions of end-users tested across different environments
    • Audited and verified using third-party security software

History​

We continually monitor our guides, their impact and other potential privacy options. We update our guides when new information becomes available. On every update, we publicly store who made the change, what has been changed, why the change was made and when the change was made.

Review Change History Our Change Process