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Block telemetry and user experience hosts

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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: MinimumSystem Functionality Loss Risk: Low
    This action improves privacy with minimal impact when you run the recommended script.
  • Batch (batchfile)These changes use Windows system commands to update your settings.
  • Fully reversible

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

Overview​

This script improves privacy by blocking data sharing to the Windows Connected User Experiences and Telemetry component 1. This component is responsible for collecting and transmitting diagnostic data and usage information to Microsoft 1 2, which is used to identify and fix problems, enhancing product and service offerings 2.

While the collection of this data is intended to improve user experience by allowing Microsoft to address issues and enhance functionality 2, it raises privacy concerns for users who prefer to keep their diagnostic information private. Blocking these endpoints prevents the automatic transmission of this data to Microsoft 2, safeguarding user privacy.

Caution

This script may impact the delivery of diagnostic and usage-based solutions from Microsoft 1 2.

Blocked Hosts​

The blocked hosts are:

  • functional.events.data.microsoft.com 2
  • browser.events.data.msn.com 2 3 4
  • self.events.data.microsoft.com 2 3
  • v10.events.data.microsoft.com 1 2 5 6 9
  • v10c.events.data.microsoft.com 1
  • us-v10c.events.data.microsoft.com 1
  • eu-v10c.events.data.microsoft.com 1
  • v10.vortex-win.data.microsoft.com 1 6 7
  • vortex-win.data.microsoft.com 8
  • telecommand.telemetry.microsoft.com 2
  • www.telecommandsvc.microsoft.com 2
  • umwatson.events.data.microsoft.com 3 4
  • watsonc.events.data.microsoft.com 1
  • eu-watsonc.events.data.microsoft.com 1
  • v20.events.data.microsoft.com 9
Safe for General Use
All actions in this script is recommended for all users. This is recommended for all users to improve without any noticeable impact on the system functionality.
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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How to apply or restore "Block telemetry and user experience hosts" using script​

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Apply changes
:: Add hosts entries for functional.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='functional.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for browser.events.data.msn.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='browser.events.data.msn.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for self.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='self.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for v10.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='v10.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for v10c.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='v10c.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for us-v10c.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='us-v10c.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for eu-v10c.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='eu-v10c.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for v10.vortex-win.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='v10.vortex-win.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for vortex-win.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='vortex-win.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for telecommand.telemetry.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='telecommand.telemetry.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for www.telecommandsvc.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='www.telecommandsvc.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for umwatson.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='umwatson.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for watsonc.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='watsonc.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
:: Add hosts entries for eu-watsonc.events.data.microsoft.com
PowerShell -ExecutionPolicy Unrestricted -Command "$domain ='eu-watsonc.events.data.microsoft.com'; $hostsFilePath = "^""$env:SYSTEMROOT\System32\drivers\etc\hosts"^""; $comment = "^""managed by privacy.sexy"^""; $hostsFileEncoding = [Microsoft.PowerShell.Commands.FileSystemCmdletProviderEncoding]::Utf8; $blockingHostsEntries = @(; @{ AddressType = "^""IPv4"^"";  IPAddress = '0.0.0.0'; }; @{ AddressType = "^""IPv6"^"";  IPAddress = '::1'; }; ); try { $isHostsFilePresent = Test-Path -Path $hostsFilePath -PathType Leaf -ErrorAction Stop; } catch { Write-Error "^""Failed to check hosts file existence. Error: $_"^""; exit 1; }; if (-Not $isHostsFilePresent) { Write-Output "^""Creating a new hosts file at $hostsFilePath."^""; try { New-Item -Path $hostsFilePath -ItemType File -Force -ErrorAction Stop | Out-Null; Write-Output "^""Successfully created the hosts file."^""; } catch { Write-Error "^""Failed to create the hosts file. Error: $_"^""; exit 1; }; }; foreach ($blockingEntry in $blockingHostsEntries) { Write-Output "^""Processing addition for $($blockingEntry.AddressType) entry."^""; try { $hostsFileContents = Get-Content -Path "^""$hostsFilePath"^"" -Raw -Encoding $hostsFileEncoding -ErrorAction Stop; } catch { Write-Error "^""Failed to read the hosts file. Error: $_"^""; continue; }; $hostsEntryLine = "^""$($blockingEntry.IPAddress)`t$domain $([char]35) $comment"^""; if ((-Not [String]::IsNullOrWhiteSpace($hostsFileContents)) -And ($hostsFileContents.Contains($hostsEntryLine))) { Write-Output 'Skipping, entry already exists.'; continue; }; try { Add-Content -Path $hostsFilePath -Value $hostsEntryLine -Encoding $hostsFileEncoding -ErrorAction Stop; Write-Output 'Successfully added the entry.'; } catch { Write-Error "^""Failed to add the entry. Error: $_"^""; continue; }; }"
Help

How to apply or restore "Block telemetry and user experience hosts" 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

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Same Goal​

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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
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    • Hundreds across the globe
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    • 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.

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