What is CompatTelRunner.exe High CPU Usage

What is CompatTelRunner.exe

Created by Microsoft, CompatTelRunner.exe is an integral part of the Windows System. It is responsible for upgradation of the Windows OS to the latest version.

In most cases the operating system that is running on your computer might not be the latest one. OS vendors frequently releases newer version of their product; in order to reap the full benefits of the OS, it is mandatory to update or upgrade it. For example, Microsoft has released the latest version of Windows which is Windows 10 and so most PCs run on Windows 10, unless you are an ardent fan of the earlier versions of Windows.

You must be wondering, which file or process in the Windows OS is responsible for upgrading and updating the operating system. Well, like other jobs in Windows, for the purpose of upgrading the OS, there is a specific file called the CompatTelRunner.exe. Also known as Windows Compatibility Telemetry, this file or process sends periodical usage and performance data so that user experience is enhanced and some potential errors are rectified. CompatTelRunner.exe is a system file and an important part of Windows and is located in the C:\Windows\System32 folder.

This article is a part of our Windows explanatory series which explains different process found in Windows like msvcp140.dllmsvbvm50.dllctfmon.exeVulkan Run-time Libraries and many more.

What Is Microsoft Compatibility Telemetry?

File NameCompatTelRunner.exe
File SizeVariable
DescriptionIt is process responsible for upgradation of the Windows OS
Is it a virusNo. But, It can be disguised as a virus
Can be disabledYes

Microsoft has always invested a lot in enhancing the user experience. And, as a part of it, the company has introduced the compatibility telemetry in most of the Windows versions. With Microsoft Compatibility Telemetry, the company gathers information from all the computer and combines these information to improve the services of Windows and enhance the user experience as well as make the OS secured. Moreover its primary function is to keep Windows updated along with analyzing the use of Windows and helping in its improvement.

Let’s check some of the important functions of CompatTelRunner.exe in Windows OS.

Functions of CompatTelRunner.exe

CompatTelRunner.exe file or process is responsible for upgradation of the Windows OS to the latest version. It is  introduced by Microsoft and is a integral part of the latest windows versions.

This file has some legit functions in the Windows Operating System. Created by Microsoft, it is an integral part of the Windows System. Some of the many functions of this file are as mentioned below

  1. To perform System diagnostics and determine if there are any compatibility issue.
  2. To upgrade your Windows OS to the latest version.
  3. Collects program telemetry information (if that option is selected) for the Microsoft Customer Experience Improvement Program.

Also Read: What Is Windows Modules Installer Worker

Is CompatTelRunner.exe a virus?

CompatTelRunner.exe is essentially not a virus! It is a verified process signed by Microsoft. However, the file may get affected to malware and virus infections. The fact that this process uses a high amount of CPU resources might exhibit it as a virus or malicious file. Contrary to that, CompatTelRunner is actually a safe and legit file of the Windows system.

Most often viruses and malwares are disguised as CompatTelRunner.exe and distributed through various medium including emails. On being infected by virus, any .exe files including CompatTelRunner.exe will give rise to various kinds of errors.

How to Prevent CompatTelRunner.exe Virus?

As discussed already, the CompatTelRunner.exe file is vulnerable to virus and malware infections. But fortunately, this can be stopped by keeping in mind the below mentioned things:

  • Do not install free applications from unreliable websites.
  • Even if you install these applications, always use custom download and uncheck the suspicious files that seem questionable.
  • Always use anti-virus in your PC.
  • Scan your computer at least once in a week.

Once you have completed disabling or deleting the CompatTelRunner.exe process from your system, you would require to reset the settings of your browser. These can be done by following the below mentioned tips.

  1. Google Chrome: Go to settings tab and click on Advanced Settings. In the bottom of the page find and click on “Reset Settings” button.
  2. Mozilla Firefox: On the top right corner find and click on the “Refresh Firefox” button.
  3. Opera: Opera users can resets settings by deleting “operapref.ini” file in C:/users/user_name/AppData/Roaming/Opera/Opera.

Common Errors of CompatTelRunner.exe

The CompatTelRunner.exe file may get infected by virus, or even get replaced by some other malicious programs. As a result, it will result into some errors as mentioned below:

  1. CompatTelRunner.exe Application Error.
  2. CompatTelRunner.exe is not a valid Win32 application.
  3. CompatTelRunner.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  4. Cannot find CompatTelRunner.exe.
  5. CompatTelRunner.exe not found.
  6. Error starting program: CompatTelRunner.exe.
  7. CompatTelRunner.exe is not running.
  8. CompatTelRunner.exe failed.
  9. Faulting Application Path: CompatTelRunner.exe.

How to detect CompatTelRunner.exe Errors?

  • Conducting a full malware scan of your PC.
  • Cleaning up the System junk files with disk cleanup.
  • Updating the PC drivers.
  • Performing a clean Windows installation.

The CompatTelRunner.exe process often has the notoriety of consuming a good chunk of CPU resources. It is hence wrongly perceived as a malicious program. But, as already mentioned CompatTelRunner.exe is not at all a virus or malicious file. If any disadvantage this file have, then it will be mainly the CPU usage.

Regardless of that, the CompatTelRunner.exe process can be disabled if it is consuming a lot of CPU resources making your PC slow. Let’s see how to do that.

How to Disable CompatTelRunner.exe

CompatTelRunner.exe is not an essential file of the Windows OS, which means the OS operates fine without it as well! This is why it can be disabled if in case it is consuming lots of disk usage or CPU usage in your computer. On disabling the process, the OS simply does not run the compatibility checks and performs upgrade from your current OS to the latest available one. Like from Windows 7 or Windows 8/8.1 to Windows 10.

There are three ways of disabling the CompatTelRunner.exe process in  your system.

  • Disable from Task Scheduler
  • Delete as an Administrator

We will discuss each of these processes in details. Read along to know.

1. Disable from Task Scheduler

Follow the below steps to disable CompatTelRunner.exe in your system.

Step 1. Press Windows key and R simultaneously in your keyboard and then type taskschd.msc and hit enter.

Taskschd.msc in Windows 10 8 7

Step 2. Expand: Task Scheduler Library > Microsoft > Windows > Application Experience. On the right side of the pane.

Microsoft Compatibility Appraiser Disable

Step 3. Now right click on the task with the name Microsoft Compatibility Appraiser and choose Disable.

2. Delete as an Administrator

CompatTelRunner.exe File in System32
  1. Login as administrator.
  2. Simultaneously press the Windows key and R and then type C:\Windows\System32 and hit enter.
  3. Now locate CompatTelRunner.exe and right click on it to choose Properties.
  4. Go to Security tab, and then choose Advanced button.
  5. Go to Owner tab, then choose Edit button.
  6. You will be able to choose as Administrators. Then click Apply and OK to save the change.
  7. A notification will then popup. Now close all the properties Windows and hit Ok in the notification dialog that has popped up.
  8. Right click CompatTelRunner.exe and choose Properties again. And also go to Security tab and click Advanced button.  
  9. This time, choose Permissions tab, and choose the account you are using from the list and click Edit.
  10. Select the user account that you are using and click the Allow box for Full control. Then hit OK to save the change.
  11. Finally, you can delete the CompatTelRunner.exe file and get rid of all the problems that you are facing.

Disable Compatibility Telemetry in Windows 10

Method: Using Registry Editor

The Compatibility Telemetry in Windows 10 can be disabled using the registry editor. Follow the below steps to achieve that.

Step 1: Open the Registry editor by typing regedit in the Run window.

Regedit Windows Registry Editor

Step 2: Now you need to navigate to the below-given key.

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Data Collection

Step 3: In this section create a new DWORD of 32-bit having the name AllowTelemetry and then assign it a 0 value. Completing this step will disable the Telemetry. But if there is no key, you will be required to create one.

AllowTelemetry Compattelrunner.exe disable

Step 4: In the next step you will have to disable the Connected User Experience and Telemetry Service.

Step 5: To perform step no. 3, run services.msc from the run window and then locate the above-given option.

Step 6: Right Click on the “Connected User Experience and Telemetry Service” select Properties. Under Startup type option, select “Disabled”.

Connected User Experience and Telemetry Properties disable

Alternatively, you can also disable the Telemetry by using Windows PowerShell. You can run the following commands to achieve the same.

stop-service diagtrack

set-service diagtrack –startuptype disabled

CompatTelRunner.exe High Disk Usage

Most often CompatTelRunner.exe process runs for a longer period of time , thereby consuming high disk capacity. Moreover, multiple CompatTelRunner processes may also show up in the task manager consuming high CPU and disk usage. This ultimately slows down the speed of the entire computer and may even lead to its ‘freezing’. This problem is known as CompatTelRunner.exe high disk usage issue and is common in Windows 7 and Windows 10 computers. If your Windows 10 system is freezing randomly then you can try the methods given in our other article on How To Fix Windows 10 Random Freezing Issues.

However, there are solutions available for this problem and so it can resolved with these solutions. The solutions for this problem is obviously to disable or delete the CompatTelRunner.exe process, the procedure of which has already been discussed above.

Repair corrupt system files

There are chances that CompatTelRunner.exe file may get maligned due to infection from virus or any malwares. In such a case the system troubleshooter won’t be able to provide the proper guide. Repairing the corrupt system is quite simple and straightforward. You just need to follow the below mentioned steps:

  1. Press the Windows + X key together to access Power user menu and select Command Prompt (Admin).’
  2. In the command prompt window, type sfc/scannow and hit Enter.
  3. Wait patiently and let the process finish. Afterward, restart your computer.

Is It Bad for Microsoft to Track Your Windows Usage?

The discussion above must have left you with the thought if Microsoft is using or tracking your private data. Well, the sole use of CompatTelRunner.exe is to gather as much user information from the various computers across the globe running on Windows.

Talking about information, it should be clear that Microsoft gathers only the Windows user’s usage habits and patterns. These patterns are rigorously checked and studied by Microsoft for understanding the user’s experience with the operating system. Such studies enables Microsoft in developing a far better version of Windows in later times.


Finally to wrap up the discussion, we can draw the following conclusion about the CompatTelRunner.exe process/file:

  1. CompatTelRunner.exe file or process is responsible for upgradation of the Windows OS to the latest version. It is  introduced by Microsoft and is a integral part of the latest windows versions.
  2. Using CompatTelRunner.exe file, Microsoft collects user information and combines the data for enhancing the experience of users with the OS.
  3. CompatTelRunner.exe is not a virus.
  4. CompatTelRunner.exe file/process consumes a high disk and CPU usage in the system
  5. CompatTelRunner.exe file can be disabled or deleted without creating any hindrance to the Operating System.

Hope that this article has helped you in figuring out the unknown facts about this particular file of the Windows OS and also provided information regarding how to solve the disk and CPU usage issue by the process. Before concluding the discussion, we would like to suggest you to use the commands mentioned in this article with care as any small mistake may create glitches in your system.

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