"Guide to Resolving High Disk Usage Issues with Microsoft Compatibility Telemetry - Windows 11/10"

If you've noticed high disk usage by Microsoft Compatibility Telemetry or high CPU usage on Windows 11/10 and want to fix it to speed up your PC, you're in the right place. In this guide, we'll cover all the useful solutions to fix the Microsoft Compatibility Telemetry high disk issue. Let's quickly get to the fixes.

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Tip: Optimize your hard drive and system with a free partition manager

"Microsoft Compatibility Telemetry High Disk" refers to high disk usage by the Microsoft Compatibility Telemetry process. This is a system process that collects and sends data about your Windows operating system's performance and compatibility to Microsoft. When this process consumes a significant amount of disk space or resources, it may show up as "high disk usage," potentially causing your computer to run slower. Generally, this is done to help Microsoft improve its products and services, but it can also affect your computer's performance. If you encounter this issue, you can try updating your operating system, closing unnecessary background applications, or optimizing your hard drive performance to address it.

Most Windows users opt in to the “Microsoft Customer Experience Improvement Program” during the Windows 10 installation, which collects program telemetry and sends it to Microsoft – that's what CompatTelRunner.exe is for.

Microsoft Compatibility Telemetry is a service in Windows 10 that contains technical data about how your Windows device and related software run, and it periodically sends this data to Microsoft to improve the user experience by addressing any issues that might arise. Thus, many users have encountered high Microsoft Compatibility Telemetry disk usage or high CPU usage in Task Manager, which may lead to severe performance issues like slow running computer, program or OS crashes.

Here, we prepared a complete guide on how to disable CompatTelRunner.exe and fix the Microsoft Compatibility Telemetry high disk usage issue on Windows 10.

Read through the six solutions below, and try them one by one. If one of these fixes your problem, please share this article to help others!

Fix 1: Disable Microsoft Compatibility Telemetry in Windows 11/10

When you encounter high disk usage or high CPU issues with Microsoft Compatibility Telemetry, try disabling CompatTelRunner.exe in Windows 10 in a few ways.

1. Disable the Microsoft Compatibility Appraiser via Task Scheduler

The Microsoft Compatibility Appraiser scans the Windows 7/8/8.1/10/11 applications running on your computer to assess their compatibility with an upgrade to Windows 10. To disable this service for troubleshooting, follow these steps: 1. Open Task Scheduler: Click the "Start" button, search for "Task Scheduler," and select it from the results. 2. In the Task Scheduler window on the left, expand "Task Scheduler Library." 3. In the "Task Scheduler Library," find and click the "Microsoft" folder, then expand it. 4. Next, expand the "Windows" folder, and locate the "Application Experience" folder, then click on it. 5. In the Details pane on the right, find the task named "Microsoft Compatibility Appraiser." 6. Right-click on the task and select "Disable." 7. Confirm the selection in the pop-up dialog to confirm that you want to disable this task. After completing these steps, the Microsoft Compatibility Appraiser will no longer automatically scan your application files. Please note that disabling this service might affect certain update processes, as it's typically used to ensure app compatibility after an OS upgrade. If you encounter any issues, you can always re-enable the service.

Step 1. Click the Start button, type Scheduled Tasks, and press Enter.

Step 2. In the Task Scheduler window, navigate to the following path: \Task Scheduler Library\Microsoft\Windows\Application Experience.

Step 3. In the Application Experience folder, locate the Microsoft Compatibility Appraiser.

Step 4: Right-click on it and select "Disable." Confirm the action, and then check if the problem still persists.

2. Disable Windows Compatibility Telemetry via Group Policy Editor

Step 1: Press the Windows logo key + R, type gpedit.msc, and then click OK.

2. Go to Computer Configuration > Administrative Templates > Windows Components > Data Collection and Preview Builds.

Step 3: Double-click on "Allow Telemetry." Select "Disabled," and then click "OK."

Now you can go to the Task Manager to check if it's working. If this isn't too effective, try the second solution.

3. Disable Microsoft Compatibility Telemetry via Registry Editor

Step 1: Press the Windows + R keys, type regedit in the box, and then click OK. When the User Account Control prompt appears, click Yes.

Step 2: Navigate to HKEY_LOCAL_MACHINE >SOFTWARE>Policies>Microsoft>Windows>DataCollection.

Step 3: Right-click on “DataCollection” and select New > DWORD (32-bit) Value. Name the new value “AllowTelemetry,” then double-click on “AllowTelemetry.”

Step 4: Set the "Value" date to 0 (zero), and click OK.

Solution 2: Remove CompatTelRunner.exe to fix high disk usage by the Microsoft Compatibility Telemetry process

In addition to turning off the Windows Compatibility Telemetry, you can also resolve high disk usage or CPU issues caused by Microsoft Compatibility Telemetry by deleting the CompatTelRunner.exe. This method requires you to log in to your computer using an administrator account with ownership privileges. Here's a step-by-step guide:

Step 1: Type CompatTelRunner in the search box. Right-click on CompatTelRunner, and select Open file location.

Step 2: Right-click on CompatTelRunner.exe, and select Properties. Go to the Security tab, and then click Advanced. Next to Owner, click Change.

Step 3: Click "Advanced" > "Find Now." Scroll down and select the account you're currently using, then click "OK." Click "Apply," and when prompted, click "OK" again.

Step 4. Next, you need to change the permissions. Right-click the CompatTelRunner.exe file, and open Properties again. Go to the Security tab > Advanced > Select the user from the list > Edit. In the new pop-up, select "Full control," then click OK. Then click "Apply" and "OK."

Step 5: You are now in full control of your computer. Right-click on the CompatTelRunner.exe file and select Delete.

Solution 3: Update Windows 11/10 to Address Compatibility Telemetry Issues

Microsoft Compatibility Telemetry is related to Windows 10 updates. If you have the latest updates installed, that might have fixed the issue.

Step 1: Click the "Start" icon.

Step 2. Go to Settings > Update & Security > Windows Update. Download and install any new updates.

Fix 4: Run SFC scan to repair Windows system files

High disk usage or CPU issues related to Microsoft Compatibility Telemetry might be due to corrupted system files. To address this, you can run an SFC scan to detect and replace any damaged system files associated with Microsoft Compatibility Telemetry.

Step 1: Press the Windows key, type cmd, and right-click on Command Prompt. Select "Run as administrator."

Step 2: Type sfc /scannow, and then press Enter. Wait for Windows to scan and automatically fix any system errors it finds.

Alternatively, you can run DISM /Online /Cleanup-Image /RestoreHealth in Command Prompt for a more thorough scan and repair.

Fix 5: Clean up the system to resolve high disk issues with compatibility telemetry

Failing to regularly clean your system of junk and temporary files can lead to various issues, including high CPU usage by CompatTelRunner.exe or high disk usage. Thus, you can use a free PC cleaning tool to remove system junk files.

Step 1. Download and install the Partition Master suite on your computer. Click on “Download PC Cleaner” from the panel.

Step 2. Install the CleanGenius tool on your computer. First, go to the “Clean” option and then click on “Scan.”

Step 3: CleanGenius will immediately scan all useless files, select system junk files and invalid entries, then click on “Clean” to clean your whole PC.

Step 4: When it's done, you'll see how many MBs or GBs it cleared out. Tap “Finish” to complete the process.

Solution 6: Manage Your Hard Disk for Better Performance

If you often encounter the 100% disk usage error or high Microsoft Compatibility Telemetry usage, you can improve your Windows system by properly managing your hard drive. There are various ways to optimize disk partitions, such as resizing/moving partitions, migrating OS to SSD or HDD, performing SSD 4K alignment for speed up, and more.

You can use the disk partition manager to manage partitions in the easiest way. After downloading this partition manager, you can create, resize, clone, move, merge, and format partitions!

[1] The Resize/Move option allows you to adjust the space of the selected disk partition as needed. Right-click on Resize/Move to shrink a volume, expand another volume, or create unallocated space for special purposes.

[2] The Clone feature creates an identical copy of a hard drive or partition, including its layout and content. You can use the Clone feature to upgrade a hard drive, replace a failed drive, back up drive data, and more.

[3] "Delete" is a common way to remove unnecessary partitions and turn them into unallocated space.

[4] Formatting is often useful in a variety of situations. By formatting a drive partition, you can change the file system, fix some corruption issues, and sometimes even remove viruses and malware.

The “Resize/Move” feature is very useful when you have one partition that is too big and another that is too small.

[6] The “Migrate to macOS” feature makes it easy to transfer a Windows installation drive to another computer without having to reinstall.

[7] GPT to MBR, MBR to GPT, NTFS to FAT32, and Basic Disk to Dynamic Disk conversion are getting more popular among Partition Master users. Apart from all the above advantages, there are many more practical features waiting for you to explore.

It's now your turn to fix the Microsoft Compatibility Telemetry high disk usage issue.

After reading this guide, you can follow the detailed steps to fix high disk usage by Microsoft Compatibility Telemetry. Remember to use the ultimate partition manager software – MiniTool Partition Wizard to optimize your hard drive and improve PC performance.

Read more about Microsoft Compatibility Telemetry.

Get help with high disk usage or high CPU usage by Microsoft Compatibility Telemetry.

Can I turn off the Microsoft Compatibility Telemetry task?

The Windows Telemetry Service is a part of the Windows operating system. It's generally not recommended to disable this feature. However, if the Microsoft Compatibility Telemetry Runner is causing noticeable performance issues, such as slow speed and app crashes, or if you're concerned about privacy, you can disable and stop the CompatTelRunner.exe on your Windows.

Is it safe to disable Microsoft Compatibility Telemetry?

Yes, it can. Disabling Microsoft Compatibility Telemetry should not affect your computer's normal functioning. If it significantly slows down your system, disabling it is advisable.

How do I turn off telemetry in Windows 10?

Disable telemetry:

Step 1: Press the Windows logo key + R, type regedit in the box, and then select OK.

Step 2. Click on Yes when User Account Control appears.

Step 3: Navigate to HKEY_LOCAL_MACHINE > SOFTWARE > Policies > Microsoft > Windows > DataCollection

4. Right-click on “DataCollection” and choose New > DWORD (32-bit) Value. Name the new value “AllowTelemetry,” then double-click “AllowTelemetry.”