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Unable to disable Microsoft Compatibility Appraiser in Task Scheduler

Hi,

I disabled Microsoft Compatibility Appraiser in Task Scheduler but the task keeps being re-enabled.

I then looked at the trigger section and that was not disabled.

So I looked at the One time trigger properties.

I then clicked on the Triggers tab.

Then I clicked on Edit button and disabled the One time trigger.

After clicking the OK button I got a dialog window saying: 

Task Scheduler service is not available. Task Scheduler will attempt to reconnect to it.

The end result is that the trigger remains enabled.

I get this error on my Windows 10 desktop and laptop.

Thanks in advance for any help.

Hi, Wenzus,

I am an Independent Advisor.

This is an extensive tutorial on disabling the service. It does include Windows Registry edit, Ensure you backup Windows Registry should you use this method.

How to Disable Microsoft Compatibility Telemetry (By CompatTelRunner.exe)
https://thewindowscentral.com/microsoft-compati...

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

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Hi WENZU5

My name is Sarah Kong and I am an independent adviser that is here to try and help you with your issue.

That service is what asses a previous version of Windows to see if it is able to upgrade to Windows 10.
I am assuming you upgraded this machine at one point?
Try running a repair upgrade to fix this.
See link by Andre.

https://answers.microsoft.com/en-us/windows/for...

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Hi Sarah,

Thanks for your input.

I upgraded Windows 10 Pro to 1809.

I'm not sure I understand your answer.

What has upgrading to do with the Compatibility Appraiser?

Thanks

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it's not an upgrade in that way.
It is a repair... so it takes your current windows image and repairs it/

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Last updated April 19, 2025 Views 4,271 Applies to: