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Turn Off Windows 11 Telemetry and Diagnostic Data

Windows sends diagnostic data to Microsoft, and you may want to limit it for privacy reasons. When Allow Diagnostic Data is unset, Windows 10 version 1903 and later use required diagnostic data (value 1) by default. Set the policy to Enabled to choose a level; value 0 stops diagnostic data from being sent on editions that support it.

Problems this setup can solve

  • Windows keeps sending diagnostic data to Microsoft, and I want to reduce the amount.
  • The optional diagnostic data control in Settings is not enough, and I want a policy to set the level.
  • I manage several PCs and want to set the same diagnostic data level on all of them at once.

Before you start

Diagnostic data off (value 0) is available only on Windows Enterprise, Education, and Server editions. On other editions, required diagnostic data is the lowest available level (Configure Windows diagnostic data in your organization).

Steps

  1. Press Win + R and run gpedit.msc.
  2. Go to Computer Configuration › Administrative Templates › Windows Components › Data Collection and Preview Builds and open Allow Diagnostic Data.
  3. Set the status to Enabled.
  4. In the options area, choose the diagnostic data level you want. To send as little as possible, choose the lowest level available for your edition.
  5. Save the setting.
  6. Open Command Prompt as administrator and run this command to apply the policy right away:
gpupdate /force
  1. Open the diagnostics page in Settings and check that it shows the level you chose.

You can read more about the policy on the Allow Diagnostic Data page.

Apply it with the registry

If you do not use the Group Policy Editor, you can apply the same setting through the registry. Use the .reg file or copy the CMD or PowerShell commands from the registry value page.

Policy or the Settings app

Settings and the policy can both lower diagnostic data, but they work differently.

  • The policy sets the level for the whole device, which helps when you want the same level on several PCs.
  • Settings provides a per-device choice. If computer and user configurations conflict, the more restrictive value wins, so a user can choose a more restrictive value in Settings.

What this policy does not cover

  • At the off level, Windows Update failure information is not sent to Microsoft. If you rely on that feedback to troubleshoot update problems, consider whether you can do without it.
  • The policy covers Windows diagnostic data. Diagnostic data from Microsoft 365 and other apps is outside its scope, so those apps need their own settings.
  • On editions that cannot reach the off level, this policy can still set the lowest level available.

How to undo it

To go back, set the policy to Not Configured and run gpupdate /force. The device returns to the default, which is required diagnostic data (value 1). If you only want a different level, open the policy again and choose another one instead.

Cautions

  • Before choosing a lower level, weigh the diagnostic information available for investigating update failures against the amount of data you want sent.
  • Lower the setting on one PC first, then apply it to other PCs.

This article is based on the Windows 11 version 26H2 (OS build 26300) policy templates (published 2026-09-29).

References