Microsoft Compatibility Telemetry is a service in Windows that collects performance and usage data. While this information helps Microsoft improve user experience, it can sometimes cause high CPU usage, leading to system slowdowns or other issues. If you’re facing such an issue, here are some steps you can take to fix Microsoft Compatibility Telemetry’s high CPU usage.

1.Run the Troubleshooter:

Navigate to ‘Control Panel’ > ‘Troubleshooting’ > ‘System and Security’ and run the System Maintenance troubleshooter. This can help fix issues that might be causing high CPU usage.

2.Disable Telemetry Using Group Policy Editor:

Press Win + R, type `gpedit.msc`, and press Enter. Go to ‘Computer Configuration’ > ‘Administrative Templates’ > ‘Windows Components’ > ‘Data Collection and Preview Builds’. Open ‘Allow Telemetry’, set it to ‘Disabled’, and click OK. Please note that Group Policy Editor is not available in Windows Home editions.

3.Disable Telemetry Using Registry Editor:

Press Win + R, type `regedit`, and press Enter. Navigate to `HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DataCollection`, create a new DWORD (32-bit) Value named `AllowTelemetry`, set its value to 0, and restart your computer. Editing the registry can be dangerous, so please ensure you understand the risks and back up your registry before making changes.

4.Use Task Scheduler to Disable Compatibility Telemetry:

Open Task Scheduler, navigate to ‘Task Scheduler Library’ > ‘Microsoft’ > ‘Windows’ > ‘Application Experience’, find the task named Microsoft Compatibility Appraiser, right-click on it, and select Disable.

5.Check for Updates:

Ensure that your Windows is up to date as Microsoft often releases updates that can fix known issues including those related to high CPU usage.

6.Perform a Clean Boot:

Performing a clean boot for your computer can help identify if any third-party service or program is causing the high CPU usage for Compatibility Telemetry.

7.Scan for Malware:

High CPU usage may also be due to malware. Conduct a full system scan using your antivirus software to check for any malware infestation.

8.Update Device Drivers:

Sometimes outdated drivers can cause compatibility issues which lead to high CPU usage. Make sure all device drivers are up-to-date using Device Manager or a trusted third-party program.

9.Delete CompatTelRunner.exe File:

Locate `C:\Windows\System32`, find `CompatTelRunner.exe`, take ownership of the file, then delete it if none of the above methods work. Proceed with caution as deleting system files may cause system instability.

Remember: Always create a system restore point before performing any changes so you can revert back in case anything goes wrong.

By following these steps, you should be able to resolve high CPU usage caused by Microsoft Compatibility Telemetry without adversely affecting your system’s performance or security.