Why Does “Update and Shut Down” Reboot My PC? The Hidden KB5067036 Fix Explained
This article explains why the Windows "Update and Shut Down" option sometimes restarts the computer instead of powering off, describes the KB5067036 update that fixes the task‑manager related bug, and provides command‑line steps to kill stray processes and reset Windows Update components.
When you click “Update and shut down”, Windows may ignore the shutdown command and restart after the update, leaving you at the login screen.
This issue, common in recent Windows 10 and Windows 11 builds, was addressed by Microsoft in the October 2023 cumulative update KB5067036 , which fixes the task‑manager “performance killer” bug for Win11 24H2/25H2 users.
The bug caused the Task Manager process to remain running after you close its window, consuming 20‑25 MB each time and potentially exhausting memory after many openings.
To immediately stop stray Task Manager instances, open an elevated Command Prompt and run: taskkill /im taskmgr.exe /f For a more thorough fix, reset the Windows Update components with the following PowerShell (admin) commands:
net stop wuauserv
net stop cryptSvc
net stop bits
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
netsh winsock resetAfter running the commands, restart the computer.
Microsoft also acknowledged the driver‑installation error 0x80070103 , which remains unresolved but is less disruptive.
Overall, the recent update shows Microsoft is finally addressing long‑standing bugs, though new issues may still appear.
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