How to Delete Diagnostic Data in Windows 11

Windows 11 collects information about how you use your computer. This is called diagnostic data. It helps Microsoft fix bugs and improve performance. However, you may want to remove Windows 11 diagnostic data to protect your privacy. This guide covers everything from basic settings to advanced system tweaks.

Why Remove Windows 11 Diagnostic Data?

Why do this? You might want to stop Microsoft from tracking your habits. You might also want to ensure no sensitive system information remains on their servers. What happens when done? Your local and cloud-based diagnostic history is cleared, giving you a cleaner privacy profile.

Required vs. Optional Diagnostic Data

Windows 11 uses two types of data collection. Required diagnostic data includes basic info like device health and error reports. This is necessary for Windows to function properly. Optional diagnostic data includes more detailed info about how you use apps and features. You can turn off optional data without breaking your system.

How to Delete Diagnostic Data via Settings

This is the easiest way to clear your history.

1. Open Settings.
2. Go to Privacy & security.
3. Click Diagnostics & feedback.

   

4. Select Delete diagnostic data.
5. Click the Delete button.

   

Advanced Telemetry Disabling

For power users, you can stop the telemetry service entirely. Note: This requires admin privileges.

1. Press Win + R, type services.msc, and hit Enter.
2. Find Connected User Experiences and Telemetry.
3. Right-click it and select Properties.
4. Set Startup type to Disabled and click Stop.

Using the Registry Editor

Note: This requires admin privileges. You can disable telemetry via the registry. Be careful, as incorrect changes can cause system issues.

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DataCollection

Create a new DWORD (32-bit) Value named AllowTelemetry and set it to 0.

Using Group Policy Editor

Note: This requires admin privileges. If you have Windows 11 Pro, use the Group Policy Editor.

1. Press Win + R, type gpedit.msc, and hit Enter.
2. Navigate to Computer Configuration > Administrative Templates > Windows Components > Data Collection and Preview Builds.
3. Double-click Allow Telemetry and set it to Disabled.

Pro-tip: If you are not comfortable editing the registry, use tools like O&O ShutUp10++ or Winaero Tweaker. These programs provide a simple interface to toggle privacy settings without manual configuration.

Summary

Removing Windows 11 diagnostic data helps you regain control over your privacy. By using the Settings app, you can clear existing data. For advanced users, the Registry or Group Policy Editor offers deeper control. Always remember to visit the Microsoft Privacy Dashboard to manage your cloud data as well.