MoUSO Core Worker Process (MoUsoCoreWorker.exe) Constantly Wakes Computer from Sleep

My computer (Windows 10, 64-bit Build 19041) is constantly waking up from sleep and then going back to sleep for a short time only to repeat the cycle.  I ran sleep diagnostics on the Windows PowerShell as administrator i.e. powercfg /systemsleepdiagnostics.  The report from yesterday (5/31/2020) indicates that my computer awoke from sleep 50-55 times during the course of the day until at about 8:00 p.m., I decided that it was better to fully shut down the computer rather than have these continued cycles.  The common thread in all these awakenings from sleep is MoUSO Core Worker Process (MoUsoCoreWorker.exe). 

- Power Requests
- \Device\HarddiskVolume5\Windows\System32\MoUsoCoreWorker.exe
START TIME DURATION TYPE TOKEN
2020-05-31T18:18:53 0:00:01 Execution 0xffff8389192ab2e0

This executable is a Microsoft programming element. 

 Why is this happening and what can I do to eliminate this totally annoying phenomena?

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Check and see if there is any update running on Windows?

Try run Windows Update and install all updates and restart your PC and see if problem persist?

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I have the same problem. Does anyone know how to fix? There are no new update for now (2020-08-01) and problem still exists.

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My computer is on Windows 10 Home Build 2004. I just had a similar issue that it wouldn't go into sleep. To check what was causing it, I opened a Command window in Administrator mode and entered

powercfg /requests

The only thing listed having power requests was

[PROCESS] \Device\HarddiskVolume6\Windows\System32\MoUsoCoreWorker.exe

USO Worker

A quick search on Google showed me MoUsoCoreWorker.exe is related to Windows Update, so I opened the Service Manager and restarted Windows Update service. I checked again with powercfg, and nothing was listed. My computer has been able to go to sleep.

I am not sure whether this issue is completely gone. But at least a quick restart of Windows Update service makes it go away.

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Reply In reply to deleted message
I noticed that both my Wife and my PC didn't go to sleep last night. Both have this process running... No updates...

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This process mysteriously appeared in my task manger after the latest update. I am having multiple sleep issues as well regardless of what power management settings I edit. one of my secondary hard drives is constantly going to sleep now as well. 55 times? I wish , I'm showing over 100 events when I ran that Powershell Command. 

How can they constantly release bugged updates ? This is starting to feel like Asus Bios updates , updates to fix the updates ...

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I have Windows 10 Pro 2004, and have MoUsoCoreWorker.exe stopping my HP TouchSmart from going to sleep:

Microsoft Windows [Version 10.0.19041.388]
(c) 2020 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>powercfg -requests
DISPLAY:
None.

SYSTEM:
None.

AWAYMODE:
None.

EXECUTION:
[PROCESS] \Device\HarddiskVolume4\Windows\System32\MoUsoCoreWorker.exe
USO Worker

PERFBOOST:
None.

ACTIVELOCKSCREEN:
None.

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As mentioned on another thread, I installed the optional update KB4568831 which fixes the issue.

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This process mysteriously appeared in my task manger after the latest update. I am having multiple sleep issues as well regardless of what power management settings I edit. one of my secondary hard drives is constantly going to sleep now as well. 55 times? I wish , I'm showing over 100 events when I ran that Powershell Command. 

How can they constantly release bugged updates ? This is starting to feel like Asus Bios updates , updates to fix the updates ...

Microsoft started to make money on cloud and it shows.

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You may be onto something here.

I likewise restarted the Windows Update service and the Execution hold in Powercfg went away.

Then I decided to experiment.

  • I ran a manual check for updates. The MoUsoCoreWorker.exe was back in Powercfg.
  • When the update completed, it went away.
  • That seems to be normal.

When I first hit the Settings | Windows Update dialog, the updater showed an error in checking for the update. I don't know if that's because I had restarted the service, or if it had in fact hit a network error and that held the service open.

More experimenting to come...

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I have the same problem.  How would one make a powercfg /requestsoverride for this?  I am not good with the syntax.

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Last updated November 25, 2020 Views 102,078 Applies to: