CompatTelRunner.exe High CPU And Disk Usage Error

How to
How to

Microsoft has created a number of configurations or extension files to help with the upgrading process. CompatTelRunner.exe is one of these update file extensions. It serves as a prerequisite for the Windows installer to materialise the installation process’ concrete system files. The addon ensures the device’s compatibility while updating the operating system version.

In other words, it determines if the new computer files will function properly in the system. The file can also be used to update service packs that are pre-installed on the installation medium. This vital operation is carried out by the file extension when the operating system is updated.

How to
How to

The user has the option of not allowing this software to execute, thereby saving time. If you need to confirm compatibility before installing the latest operating system, you can use the Windows installer to do so. Unfortunately, CompatTelRunner.exe uses a lot of CPU and storage space, which is a small flaw. Before the upgrades take effect, the CompatTelRunner.exe file consumes more than 60% of the CPU and disc consumption, according to users.

The process does not need to be updated, and the user can stop it. The file is located in the ‘System32’ folder and can be accessed by the user. The Windows installer prevents users from deleting this file for security reasons, and they can only see it in ‘Read Only’ mode. It prevents the user from altering the file’s functionality.

What Is CompatTelRunner.exe and How Do I Fix It?

CPU and disc use are both high. Every difficulty, fortunately, has a feasible answer. One approach is for the administrator to take control of the installation process before proceeding to remove the extension file from the computer. Another option is to allow only the ‘Scheduled files’ to run while the operating system is being installed. Let’s take a quick look at how to fix the CompatTelRunner.exe High CPU and Disk Usage issue.

Method 1: Corrupt System Files

The file should, in theory, not occupy so much CPU and storage space. If the machine has corrupt system files, this can happen. Thankfully, the operating system includes a little yet powerful command prompt tool called System File Checker (SFC).

Running this easy utility will repair any corrupt files on your PC. To avoid data loss, make a full backup and restore of all the files and features running on the computer before performing this. To complete the procedure, log in to the computer in administrator mode.

To run the SFC command, go through the instructions below:

Step 1- To begin, use the administrator mode by pressing the Windows logo key + R at the same time.

Step 2 – On the screen, the run dialogue box will appear. To open the command prompt in administrator mode, type ‘cmd’ in the address bar and hit control + shift + enter.

Step 3 – The Administrator command prompt will appear on the screen. To use the system file checker (SFC) utility, type the following command and press enter:

sfc /scannow sfc /scannow sfc /s

Step 4 – Finally, replace all of the system’s corrupt files.

To make the updated settings take effect, restart the computer. During the installation of a new operating system, it might solve the problem of high CPU and disc space utilisation.

Method 2: Stop the CompatTelRunner.exe file from running on Windows 10

The ‘Task Scheduler,’ as previously explained, allows the user to stop the file from running. For the same, follow the procedures below.

Step 1- To begin, hold down the Windows logo key and the R key at the same time.

Step 2 – In the address bar, type ‘taskschd.msc’ and click Enter.

Step 3- The Task Scheduler window will display on the screen in step three. Double-click on ‘Task Scheduler Library,’ then ‘Microsoft,’ then ‘Windows,’ then ‘Application Experience,’ and lastly ‘Application Experience.’

Step 4 – Finally, scroll to and right-click on ‘Microsoft Compatibility Appraiser’ in the list of available scheduled tasks, then pick ‘Disable’.

This will successfully stop the ‘CompatTelRunner.exe’ process from executing in your computer, resolving the issue.

Method 3: Take Control of CompatTellRunner.exe and Delete It

You can take custody of the file and then delete it, as previously said. It provides a straightforward answer to the issue. To do so, log in to your computer as an administrator and follow the steps below.

Step 1- To begin, navigate to the folder containing the extension file. To do so, hold down the Windows Logo Key and the R key at the same time. A dialogue box titled “Run” will appear. In the address bar, type ‘C:WindowsSystem32’ and hit ‘ok.’

Step 2 – On the screen, the folder will appear. Now look for the file ‘CompatTelRunner.exe’ in the same folder as the folder.

Step 3 – Once you’ve found it, right-click it and choose ‘Properties.’ Select the ‘Security’ tab from the list of tabs in the properties box.

Step 4 – At the bottom of the window, press the Advanced button.

Step 5 – On the screen, a new window will appear. Under the heading ‘Owner,’ select the ‘Change’ option.

Step 6 – To alter the computer’s possession, click on ‘Choose Names’ to verify the username and input the computer’s username under the option ‘Enter the object name to pick.’

Step 7 – Finally, press the ‘OK’ button. Now, under the ‘Security’ tab, go to the ‘Advanced’ option and double-click on the current username.

Step 8 – Finally, tick the ‘Full control’ checkbox and hit enter. That is all there is to it. Now you’re ready to go.

Delete the file ‘CompatTelRunner.exe’ from your computer now.


It’s important to note that ‘CompatTelRunner.exe’ has no negative effects on the computer. The CompatTelRunner.exe extension file might, however, consume a lot of CPU and storage space in some instances. To avoid any possible hardware harm, the user should address the growing issue. Hopefully, the preceding remedies were successful in resolving the CompatTelRunner.exe error of excessive CPU and disc utilisation.


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