Windows operating system is excellent in many ways. It is very user-friendly and works very well for most of us. But we can’t help but nod when someone calls it weak and prone to many bugs and errors. One of them is how quickly the performance of your Windows system gets reduced.

You may have sometimes noticed a high disk usage in your task manager window or even abnormally high CPU usage when you do not have anything too heavy running on your RAM or even when there is seemingly nothing in the background. To solve High CPU & Disk Usage by CompatTelRunner.exe, Delete CompatTelRunner.exe, Uninstall KB2952664, or Repair Corrupt Files.

When you list the process that is taking the most resources, CompatTelRunner.exe might have popped up on top of the list. What is that software, and what does it do anyway? CompatTelRunner.exe is a Windows update tool used to switch to the latest version of the OS or maybe install some newest service pack updates for your system. Ah, we all love Windows updates, don’t we? Annoying but often necessary.

4 Ways to Fix High CPU & Disk Usage by CompatTelRunner.exe

Even though the CompatTelRunner.exe software is meant to improve system performance, it, unfortunately, limits it a lot during execution. It is listed as a Trusted-installer in the system32 folder, which seems to be the problem. So here are four ways to fix the High CPU & Disk Usage by CompatTelRunner.exe

Delete CompatTelRunner.exe

This seems to be a distinct fix for everything. If something is bothering you, just pluck it out! To remove the troublesome CompatTelRunner.exe, navigate to its file location.

You can get its location by searching the exact process name in the Win+S search box or going to C:\Windows\System32 yourself. There, search for CompatTelRunner.exe in the search box.

Right-click on the exe file and select properties. Head over to the tab that says security, and select the profile that you are using. Then tick the access tick boxes and give yourself full control. Once that is done, click the advanced button, and head over to the owner tab.

system32- win+r

There, you’ll see that the current owner is listed as TrustedInstaller. Click edit and select your profile as the new owner. Hit apply and OK. Finally, select OK and close the properties dialog box.

Now you have access to modify this exe file, and you can safely delete it from the directory where you found it.

Deleting the updates this exe software has installed might not be a good idea, as it could be problematic for your system apps, and you would get compatibility problems with newer ones.

So delete the installer and leave the installed updates as you found them just to be on the safer side. Because if there’s one thing I’ve learned, windows love to kill itself over nothing, into the blue screen of death. If it doesn’t solve the High CPU & Disk Usage by CompatTelRunner.exe issue, then give it a try to the following method.

Disable CompatTelRunner.exe

If you think deleting it invites unnecessary risk and merely want to stop it from running, you can do that too. You can disable it using the task scheduler and achieve success. Here is how to do it.

Go running by pressing Win+R and type in taskschd.msc. It will open the task scheduler interface. Go to the Library folder, and in it, Microsoft->Windows->Application Experience. You will see a list of tasks, usually three to four.


Right-click on the one that says Microsoft Compatibility Appraiser and choose the disable option. That’s all. You have disabled it successfully and should not face more aggressive disk usage problems.

If the problem persists, try and reboot your computer once and retrace the above steps. A simple reboot usually fixes these issues since disabling it sometimes may not take effect immediately. Hope it helps you to fix the High CPU & Disk Usage by CompatTelRunner.exe issue.

Repair Corrupt Files

If you do not wish to remove or disable the installer and want the Windows updates to be installed correctly, you must repair some possibly corrupted software.

To do that, you need to download a repair and replacement application on your system. I suggest a software called Reimage Plus. Download the exe file and run it on your slow computer. It will scan your system files and find the seemingly corrupted ones.


You can replace most of those files with new ones and reboot. Within a few moments, the CompatTelRunner.exe file will run again, but this time, run as expected.

Installing the latest Windows updates are essential to some people, and to them, this method is recommended. I cannot guarantee that it will always work, but it will surely fix minor issues with your system updates software.

Uninstall KB2952664

KB2952664 is the name of the system update. You can delete or uninstall it if you do not wish to have it on your system because of the troublesome CompatTelRunner.exe.

Head over to the search menu by pressing Win+S keys. Type in cmd and right-click on it. Select the Run as administrator option and select Yes on the prompt message. Once the command prompt window opens up, copy and paste this line:

dism /online /get-packages | findstr KB2952664


It will list all the installed versions of the software update. After that, paste this second command:

dism /online /remove-package /PackageName:Package_for_KB2952664~31bf3856ad364e35~amd64~~

This will remove that update file on your PC. To double check if everything is cleaned out, copy this command line:

Get-HotFix -id KB2952664

The update has been successfully removed from your computer if it says it cannot find hotfix. You can enjoy lesser CPU utilization now! This should solve High CPU & Disk Usage by CompatTelRunner.exe error.


Can I disable Compattelrunner.exe to reduce high CPU disk usage?

Yes, you can disable Compattelrunner.exe to reduce high CPU disk usage. You can turn off the Microsoft Compatibility Telemetry service through the Services application or the Group Policy Editor.

How can I determine if Compattelrunner.exe is causing high CPU disk usage?

You can determine if Compattelrunner.exe is causing high CPU disk usage by opening the Task Manager and checking the CPU and disk usage.

Is Compattelrunner.exe a virus or malware?

No, Compattelrunner.exe is not a virus or malware. It is a legitimate Windows process associated with the Microsoft Compatibility Telemetry service.

Can I remove or delete Compattelrunner.exe?

It is not recommended to remove or delete Compattelrunner.exe. It is a system process required for specific compatibility and diagnostic functions. However, you can turn off the associate service to prevent it from running and causing high CPU disk usage.

Are there any alternative solutions to address the high CPU disk usage caused by Compattelrunner.exe?

Yes, besides turning off the Compattelrunner.exe service, you can try other solutions, such as running a system scan for malware, updating your operating system and drivers, optimizing your hard drive, or performing a clean boot to identify potential conflicts with other processes or applications.

Can I limit the resources used by Compattelrunner.exe?

Unfortunately, there is no direct way to limit the resources used by Compattelrunner.exe. You can only turn off the associate service or modify related settings.

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Avatar for Kaushal Malkan
You can always find me playing the piano or playing FIFA when I'm not binge-watching TV Series with pizzas. Fountainhead of TechWhoop. Life motto: The only time success comes before work is in the dictionary.


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