There appears to be no straightforward way to permanently stop Windows 11 Home from rebooting on its own after installing updates. I looked for workarounds but so far I have only found a script that has to run on a schedule to block the reboot by changing “working hours”. (Link.)
Is that really the best that is possible?
It’s worth mentioning that you probably can’t stop the reboot after the update. You’re better off searching how to stop the updates or stop rebooting all together (like the trick mentioned about editing a notepad file).