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Disable Defender Antivirus telemetry

Overview​

About this script

This script improves your privacy on Windows.

These changes use Windows system commands to update your settings.

This script disables telemetry collection by Defender, enhancing user privacy.

By default, Microsoft collects telemetry data from Microsoft Defender Antivirus and other Defender software 1. This data collection is referred to as 1DS telemetry 1. Microsoft's One Data Strategy (1DS) centralizes and collects telemetry from various Microsoft services and tools 2. The strategy collects data from various Microsoft services and tools 2. The Microsoft Defender Core Service collects telemetry for Microsoft Defender Antivirus and Microsoft Defender for Endpoint 1.

Disabling telemetry enhances privacy by reducing the data sent to Microsoft about your system and Defender usage. It may also boost performance by reducing resource usage for telemetry collection. However, this action may limit Microsoft's ability to improve its antivirus service and address issues using user data 1.

Technical Details​

This script modifies following settings:

  • Using the Defender CLI to set the DisableCoreService1DSTelemetry preference 1.
  • Setting HKLM\Software\Policies\Microsoft\Windows Defender\Features\DisableCoreService1DSTelemetry 1 registry key to disable telemetry collection via Group Policy Object (GPO) 1.
  • Setting HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService\DisableCoreService1DSTelemetry registry key. This key directly controls the feature. It exists by default in modern Windows versions but is not officially documented.

This script uses Batch (batchfile) scripting language.

Use with Caution

This script is only recommended if you understand its implications. Some non-critical or features may no longer function correctly after running this script.

Implementation Details

  • Language: batch

  • Required Privileges: Administrator rights

  • Compatibility: Windows only

  • Reversibility: Can be undone using provided revert script

Explore Categories​

This action belongs to Disable Defender data collection category. This category features scripts designed to reduce or eliminate data collection by Defender. Disabling these features enhances privacy by limiting the information shared with Microsoft. Although Microsoft Defender offers security benefits, it also collects data for analysis, service improvement,... Read more on category page ▶

Apply now​

Choose one of three ways to apply:

  1. Automatically via privacy.sexy: The easiest and safest option.
  2. Manually by downloading: Requires downloading a file.
  3. Manually by copying: Advanced flexibility.

Alternative 1. Apply with Privacy.sexy​

privacy.sexy is free and open-source application that lets securely apply this action easily.

Open privacy.sexy

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

privacy.sexy instructions
  1. Open or download the desktop application
  2. Search for the script name: Disable Defender Antivirus telemetry.
  3. Check the script by clicking on the checkbox.
  4. Click on Run button at the bottom of the page.

Alternative 2. Download​

Irreversible Changes

This script is irreversible, meaning there is no straightforward method to restore changes once applied. Exercise caution before running, restoring it may not be possible.

  1. Download the script file by clicking on the button below:

    Download script

  2. Run the script file by clicking on it.

Download revert script​

This file restores your system to its original state, before this script is applied.

Download restore script

Alternative 3. Copy​

This is for advanced users. Consider automatically applying or downloading the script for simpler way.

  1. Open Command Prompt as administrator.
HELP: Step-by-step guide

  1. Click on Start menu

  2. Type cmd

  3. Right click on Command Prompt select Run as administrator

  4. Click on Yes to run Command Prompt

Animation showing how to open terminal as administrator on Windows 11

  1. Copy the following code:
Code to apply changes
PowerShell -ExecutionPolicy Unrestricted -Command "$propertyName = 'DisableCoreService1DSTelemetry'; $value = $False; if((Get-MpPreference -ErrorAction Ignore).$propertyName -eq $value) { Write-Host "^""Skipping. `"^""$propertyName`"^"" is already `"^""$value`"^"" as desired."^""; exit 0; }; $command = Get-Command 'Set-MpPreference' -ErrorAction Ignore; if (!$command) { Write-Warning 'Skipping. Command not found: "^""Set-MpPreference"^"".'; exit 0; }; if(!$command.Parameters.Keys.Contains($propertyName)) { Write-Host "^""Skipping. `"^""$propertyName`"^"" is not supported for `"^""$($command.Name)`"^""."^""; exit 0; }; try { Invoke-Expression "^""$($command.Name) -Force -$propertyName `$value -ErrorAction Stop"^""; Set-MpPreference -Force -DisableCoreService1DSTelemetry $value -ErrorAction Stop; Write-Host "^""Successfully set `"^""$propertyName`"^"" to `"^""$value`"^""."^""; exit 0; } catch { if ( $_.FullyQualifiedErrorId -like '*0x800106ba*') { Write-Warning "^""Cannot $($command.Name): Defender service (WinDefend) is not running. Try to enable it (revert) and re-run this?"^""; exit 0; } elseif (($_ | Out-String) -like '*Cannot convert*') { Write-Host "^""Skipping. Argument `"^""$value`"^"" for property `"^""$propertyName`"^"" is not supported for `"^""$($command.Name)`"^""."^""; exit 0; } else { Write-Error "^""Failed to set using $($command.Name): $_"^""; exit 1; }; }"
:: Set the registry value: "HKLM\Software\Policies\Microsoft\Windows Defender\Features!DisableCoreService1DSTelemetry"
PowerShell -ExecutionPolicy Unrestricted -Command "$registryPath = 'HKLM\Software\Policies\Microsoft\Windows Defender\Features'; $data = '1'; reg add 'HKLM\Software\Policies\Microsoft\Windows Defender\Features' /v 'DisableCoreService1DSTelemetry' /t 'REG_DWORD' /d "^""$data"^"" /f"
:: Set the registry value: "HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService!DisableCoreService1DSTelemetry"
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; }; }; $cmd = '$registryPath = ''HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService'''+"^""`r`n"^""+'$data = ''1'''+"^""`r`n"^""+''+"^""`r`n"^""+'reg add ''HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService'' `'+"^""`r`n"^""+'    /v ''DisableCoreService1DSTelemetry'' `'+"^""`r`n"^""+'    /t ''REG_DWORD'' `'+"^""`r`n"^""+'    /d "^""$data"^"" `'+"^""`r`n"^""+'    /f'; Invoke-AsTrustedInstaller $cmd"
  1. Right click on command prompt to paste it.
  2. Press Enter to apply remaining code.

Copy restore code​

Copy and run the following code to restore changes:

Revert code
PowerShell -ExecutionPolicy Unrestricted -Command "$propertyName = 'DisableCoreService1DSTelemetry'; $defaultValue = $True; $setDefaultOnWindows10 = $true <# $false #>; $setDefaultOnWindows11 =  $false; $osVersion = [System.Environment]::OSVersion.Version; function Test-IsWindows10 { ($osVersion.Major -eq 10) -and ($osVersion.Build -lt 22000) }; function Test-IsWindows11 { ($osVersion.Major -gt 10) -or (($osVersion.Major -eq 10) -and ($osVersion.Build -ge 22000)) }; <# ------ Set-MpPreference ------ #>; if(($setDefaultOnWindows10 -and (Test-IsWindows10)) -or ($setDefaultOnWindows11 -and (Test-IsWindows11))) { if((Get-MpPreference -ErrorAction Ignore).$propertyName -eq $defaultValue) { Write-Host "^""Skipping. `"^""$propertyName`"^"" is already configured as desired `"^""$defaultValue`"^""."^""; exit 0; }; $command = Get-Command 'Set-MpPreference' -ErrorAction Ignore; if (!$command) { Write-Warning 'Skipping. Command not found: "^""Set-MpPreference"^"".'; exit 1; }; if(!$command.Parameters.Keys.Contains($propertyName)) { Write-Host "^""Skipping. `"^""$propertyName`"^"" is not supported for `"^""$($command.Name)`"^""."^""; exit 0; }; try { Invoke-Expression "^""$($command.Name) -Force -$propertyName `$defaultValue -ErrorAction Stop"^""; Write-Host "^""Successfully restored `"^""$propertyName`"^"" to its default `"^""$defaultValue`"^""."^""; exit 0; } catch { if ($_.FullyQualifiedErrorId -like '*0x800106ba*') { Write-Warning "^""Cannot $($command.Name): Defender service (WinDefend) is not running. Try to enable it (revert) and re-run this?"^""; } else { Write-Error "^""Failed to set using $($command.Name): $_"^""; }; exit 1; }; }; <# ------ Remove-MpPreference ------ #>; $command = Get-Command 'Remove-MpPreference' -ErrorAction Ignore; if (!$command) { Write-Warning 'Skipping. Command not found: "^""Remove-MpPreference"^"".'; exit 1; }; if(!$command.Parameters.Keys.Contains($propertyName)) { Write-Host "^""Skipping. `"^""$propertyName`"^"" is not supported for `"^""$($command.Name)`"^""."^""; exit 0; }; try { Invoke-Expression "^""$($command.Name) -Force -$propertyName -ErrorAction Stop"^""; Write-Host "^""Successfully restored `"^""$propertyName`"^"" to its default."^""; exit 0; } catch { if ($_.FullyQualifiedErrorId -like '*0x800106ba*') { Write-Warning "^""Cannot $($command.Name): Defender service (WinDefend) is not running. Try to enable it (revert) and re-run this?"^""; } else { Write-Error "^""Failed to set using $($command.Name): $_"^""; }; exit 1; }"
:: Delete the registry value "HKLM\Software\Policies\Microsoft\Windows Defender\Features!DisableCoreService1DSTelemetry"
PowerShell -ExecutionPolicy Unrestricted -Command "reg delete 'HKLM\Software\Policies\Microsoft\Windows Defender\Features' /v 'DisableCoreService1DSTelemetry' /f 2>$null"
:: Set the registry value "HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService!DisableCoreService1DSTelemetry"
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; }; }; $cmd = '$revertData = ''0'''+"^""`r`n"^""+'    '+"^""`r`n"^""+'    reg add ''HKLM\SOFTWARE\Microsoft\Windows Defender\CoreService'' `'+"^""`r`n"^""+'        /v ''DisableCoreService1DSTelemetry'' `'+"^""`r`n"^""+'        /t ''REG_DWORD'' `'+"^""`r`n"^""+'        /d "^""$revertData"^"" `'+"^""`r`n"^""+'        /f'; Invoke-AsTrustedInstaller $cmd"

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