The last Windows 10 update did not arrive without its share of bugs. Among them, a particularly annoying problem concerning the standby mode.
Windows 2020 September 10 Optional Update broke sleep mode on some laptops or hybrids. While waiting for a fix from Microsoft, there is a temporary solution (a little restrictive) to overcome this problem.
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The return of the sleep mode bug on Windows 10
If your computer keeps waking up by itself after having gone into sleep mode, or the screen turns off but the machine remains on, you have probably installed the latest update for Windows 10 In fact, the MoUSO Core Worker Process (MoUsoCoreWorker.exe), linked to the Windows Update service, is the source of a malfunction in standby mode.
A similar issue was previously reported after the Windows 10 May 2020 Update. The Redmond firm then deployed the KB4568831 patch to resolve the issue. The bug is therefore back, and for the time being without a solution.
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How to force sleep mode?
In the meantime, a manipulation allowing to force the standby mode has been discovered. You can already attempt to enter Windows Update options to schedule updates and restarts. If this solution does not work, then follow the next steps:
- Type Services.msc in the Windows 10 search bar
- In the window that opens, scroll to Windows Update and right click
- Select Stop
- Right click again on this entry and this time choose Start, then Restart
- Go to Windows Update to install all pending updates then restart your PC
The MoUsoCoreWorker.exe process should then no longer interfere with sleep mode.
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Source: Windows Latest
