Mouso core worker process

Anonymous
2020-06-02T04:20:14+00:00

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?

Windows for home | Windows 10 | Sleep and Power on, off

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

317 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Anonymous
    2020-08-13T18:22:34+00:00

    After the Aug 11 updates (2nd Tuesday monthly), the MoUsoCoreWorker.exe process is no longer showing up under powercfg /requests.  And, if I put my computer into Sleep mode, it stays that way.  But, it still will not GO to sleep after xx minutes idle.  I just tried the KB4568831 fix, but I get a message: This update is not applicable to your computer.

    Update - Aug 18, 2020

    I discovered that when I unplug all USB A/V devices, the computer goes to sleep as expected. With those devices plugged in, powercfg /requests always shows their drivers as active.  This is new behaviour which began with Feature Update 2004.

    I tried (as someone in this thread suggested) powercfg /override, but that did not work for me.  I have to physically unplug the USB devices - really annoying.

    Was this answer helpful?

    6 people found this answer helpful.
    0 comments
  2. Anonymous
    2020-08-04T20:04:04+00:00

    Can confirm, definite bug.

    KB4568831 Confirmed as installed in Windows Update history.

    Manually put computer to sleep last night. This morning, computer was on (monitors off due to power off settings).

    Checked powercfg /requests, and MoUsoCoreWorker.exe is there again.

    Was this answer helpful?

    6 people found this answer helpful.
    0 comments
  3. Anonymous
    2020-08-06T12:16:10+00:00

    Just wanted to chime in and say that the "fixes" mentioned in this thread just seem to be temporary workarounds to a real bug. A few times now, I've gotten the MoUsoCoreWorker.exe to release the power request, only for it to eventually come back and prevent my PC from going to sleep.

    Was this answer helpful?

    5 people found this answer helpful.
    0 comments
  4. Anonymous
    2020-08-05T06:58:13+00:00

    I was wrong.  I installed KB4568831, and thought it was fixed.  Its back.  Same problem: same error.

    Was this answer helpful?

    5 people found this answer helpful.
    0 comments
  5. Anonymous
    2020-08-04T15:01:24+00:00

    Definite bug based on the high uptick in recent reports.

    The process is preventing my computer from entering Standby in the first place.

    Was this answer helpful?

    5 people found this answer helpful.
    0 comments