CompatTelRunner.exe file: What is it and how it affects Windows computers

By: Madeleine Dean
2 minute read

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Windows users may sometimes notice some strange files on their computers. Usually, these files go undetected until they impact your computer in a negative manner. High CPU usage is usually the most common tell-tale sign.

In this article, we’re going to talk about the CompatTelRunner.exe file. We’ll tell what this file is and how it affects your computer.

CompatTelRunner.exe file

To start with, the CompatTelRunner.exe file is a Microsoft Compatibility Telemetry file located in the C:\Windows\System32 folder. Microsoft uses Telemetry to collect system data in order to keep Windows devices secure and improve the quality of its services. The CompatTelRunner.exe file is also used to upgrade your system to the latest OS version and install the latest updates.

This Windows system file is not visible and the technical security rating is 0% dangerous, although many users would say otherwise.

I have upgraded my Windows 8 to Windows 10 and the harddrive is fully claimed by “compattelrunner.exe”. […]
After booting my laptop the compattelrunner.exe is claiming my harddisk for more then 20 minutes. Is there a real solution to stop/disable compattelrunner in Windows 10?

Indeed, the CompatTelRunner.exe file is infamous among Windows 7 and Windows 10 users for causing high CPU usage. As a result, you computer becomes really slow and the only way to solve this problem is to uninstall the file.

Secondly, users are angry with Microsoft for installing unwanted software on their computers. Many players complain about CompatTelRunner.exe’s malware-like behavior, which re-installs on their computers despite having been removed several times before.

Microsoft updates install a program called compattelrunner.exe on my computer without my authorization even though my update settings say, “Download important updates but let me choose whether to install them.” Compattelrunner.exe serves no legitimate or beneficial purpose, and causes serious performance problems (applications running slowly or freezing up).

How to get rid of CompatTelRunner.exe

Now that we know what CompatTelRunner.exe’s role is, let’s see how we can get rid of it.

For all versions of Windows, start by removing it from the Task Scheduler:

  1. Start Task Scheduler
  2. Go to Task Scheduler Library > Microsoft > Windows > Application Experience
  3. Disable all three tasks in that folder
  4. Go to Ask Scheduler Library > Microsoft > Windows > Customer Experience Improvement Program
  5. Disable all three tasks in that folder

Then for Windows 10, you need to kill CompatTelRunner.exe from the registry:

  1. Start Registry Editor (regedit.exe) as Administrator
  2. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\TelemetryController
  3. Rename the entry from TelemetryController to TelemetryControllerX
  4. Restart your computer.

However, the catch is that you’ll need to do this every time Windows installs new updates on your machine.

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