What is CompatTelRunner.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the CompatTelRunner.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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CompatTelRunner.exe file information

The process known as Microsoft Compatibility Telemetry belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original CompatTelRunner.exe is an important part of Windows and rarely causes problems. The file CompatTelRunner.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 15,808 bytes. 
The CompatTelRunner.exe file is a Windows system file. The file is a trustworthy file from Microsoft. The program is not visible. It is digitally signed. Therefore the technical security rating is 0% dangerous; however you should also read the user reviews.

Uninstalling this variant: In the event of any problems with CompatTelRunner.exe, you can do the following:

Recommended: Identify CompatTelRunner.exe related errors

Important: Some malware disguises itself as CompatTelRunner.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the CompatTelRunner.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Tauchte nach Jahren plötzlich auf. Ist daher äusserst suspekt. Und warum sollte das dann nötig sein? Anderweitig wird das ganze als Spy von MS beschrieben, den man löschen sollte.

One user is not sure about it.

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Best practices for resolving CompatTelRunner issues

A clean and tidy computer is the key requirement for avoiding problems with CompatTelRunner. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the CompatTelRunner.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

CompatTelRunner.exe [all]