Fixes for CompatTelRunner.exe Usage Issues [UPDATED]

The CompatTelRunner.exe is a Windows service, which conducts computer diagnostics and then collects data to be used for tackling system errors. If you are experiencing issues with your computer’s disk space, the CompatTelRunner.exe is the process that uses most of the storage space. It is a convenient system that initiates and embraces the functions that are performed by Microsoft.

Your system is continuously running; hence the storage is occupied too. This constant running may cause some computers to slow down, but this mainly arises due to the lack of disc space. Although some solutions might help you fix this, in this case, we suggest you follow the below mentioned steps.

Understanding The CompatTelRunner.exe

The CompatTelRunner.exe, a Microsoft Compatibility Telemetry, is a system process that is used by the Windows. This is primarily used to upgrade the OS for the very latest version along with the Service Pack updates. Know more about this particular one as this refers to the KB2977759 that stands for Windows 7 RTM as a Compatibility update.

This has the function to run all Windows diagnostics and making it all easy and smooth. This further relaxes your computer’s compatibility problems. Additionally, this embraces the collection of crucial information. Here, all you need to do is enable the Microsoft CEIP in your system. The abbreviation CEIP stands for Customer Experience Improvement Program.

How To Fix CompatTelRunner.exe High CPU & Disk Usage Issue

Many times, if you attempt to modify the Microsoft Compatibility Telemetry file which is located in the C:\Windows\System32 folder, it should fix the problem. This is owned and protected by a built-in Windows Modules Installer service, i.e. TrustedInstaller. This clarifies that you cannot modify or delete that CompatTelRunner.exe file as you see the ‘Access is denied’ alert.

However, you have the option to completely erase the CompatTelRunner.exe from the Windows system by taking the ownership of the file, but it would raise various problems especially in updating the Windows. There are a few methods that can help you to fix the problem before you opt for direct deletion of the file. Here are those methods which can help you to fix the CompatTelRunner.exe usage issues –

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Fix 1: Disable CompatTelRunner.exe From Task Scheduler

The error message can be easily prevented by merely disabling the file from the ‘Task Scheduler.’ Although there are some, who say this may cause an issue while updating the Windows, but on the other hand many praises this solution, as the speed of the systems gets enhanced. Follow the below steps to perform this solution –

  1. Press Windows Key + R and the Run application will appear.
  2. Type taskschd.msc and then press Enter to launch the Task Scheduler.
  3. Expand Task Scheduler Library > Microsoft > Windows on the left side of that window.
  4. Look for Application Experience and click on it.
    CompatTelRunner.exe high cpu usage fix
  5. Then, right-click on the Microsoft Compatibility Appraiser and then click on Disable button.
    CompatTelRunner.exe high disk usage fix
  6. Restart the computer to see if works.

If all is working fine, then it is alright otherwise proceed to the next fix solution.

Fix 2: Delete CompatTelRunner.exe Using Administrator Priveleges

If you are not worried about the compatibility of programs, then you may choose the simple deletion process as an Administrator. This is not that risky a process but is a lengthy one. Follow the below-mentioned steps consciously –

  1. Log in to the system as an Administrator
  2. Press Windows Key + R and the Run application will appear.
  3. Type C:\Windows\System32 and then press Enter
  4. Look for another folder under the appeared folder, named exe. Then, right-click on it and choose Properties.
  5. Navigate to the tab titled Security and then click on the Advanced button
  6. Now navigate to the Owner tab and click on the Edit button
  7. Choose the owner as Administrators and then select the Administrators option. Click on Apply, and then click on OK to save it.
  8. Now, you will see the notification that represents the“…you will need to reopen this object…”. Close all the properties windows that are opened and then click Ok to proceed.
  9. Then again right click on the exe named folder, and then select the Properties.
  10. Navigate to the Security tab and then again click on the Advanced button
  11. Now, Click on the Permissions tab and then choose the account you have been using on your computer from the list. Click on Edit.
  12. Select the user account and then check the box next to Full Control. Click on OK to save changes
  13. Now, you can delete it without any barrier.

Restart your system to see if it works, otherwise, go for the next solution.

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Fix 3: Disable Microsoft Compatibility Telemetry 

The Microsoft Compatibility Telemetry is a Windows service which sends data to Microsoft on a timely basis. Sometimes it starts consuming the disk space, so here are the instructions that will help you get rid of this issue –

  1. Launch Run application by pressing the Windows Logo Key + R
  2. Type MSC and click OK there
  3. The Local Group Policy Editor window will appear. Here proceed to Computer Configuration > Administrative Templates > Windows Components > Data Collection and Preview Builds
  4. Double-click on the Allow Telemetry
  5. Click on the box that is next to Disabled and then click on OK

Restart your computer and then open the Task Manager to see if it worked well and the problem is solved, otherwise proceed to the next solution.

Fix 4: Use Registry Editor

You can use the registry editor to fix the error. Follow the below-mentioned steps to perform the task easily –

  1. Launch Run application by pressing the Windows Logo Key + R
  2. Type Regedit and then click on OK to proceed
  3. Here, you will be prompted by User Account Control asks for permission. Then click on the OK button to proceed.
  4. Now follow the sequence HKEY_LOCAL_MACHINE > SOFTWARE > Policies > Microsoft > Windows > Data Collection
    fix CompatTelRunner.exe high cpu and disk usage
  5. Right-click on the Data Collection there and then select New > DWORD (32-bit) Value.
  6. Then, name the new value Allow Telemetry, double-click on Allow Telemetry there.
  7. Now, set the Value Data to 0 (zero) and then proceed to OK button.

Restart the system and check if the problem is solved. We are quite sure one of the three solutions would resolve this issue.

Although the CompatTelRunner.exe is a harmless windows server that is responsible for scanning, downloading and monitoring data, these are a few very reliable solutions that will help you reduce the issue of your system slowing down effectively.

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