The fix is arriving through the optional KB5067036 update for Windows 11 25H2, which Microsoft began rolling out last week.
So, when you click "Update and shut down" on your PC, you assume your PC will install any available updates, then shut down.
Starting with Windows 11 25H2 Build 26200.7019 (or 26100.7019 on 24H2) and newer, “Update and shut down" will shut down, not reboot.
Microsoft fixes Windows’ long-standing “Update and shut down” bug in Windows 11. Update KB5067036 stops unwanted restarts, ...
Windows has released its latest update for Windows 11, and it finally fixes a problem that has been plaguing Windows users ...
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