There is a nice little tool to stop the reboots:
https://www.udse.de/en/windows-10-reboot-blocker
It changes the active hours every hour so that you will never be outside of active hours.
https://www.udse.de/en/windows-10-reboot-blocker
It changes the active hours every hour so that you will never be outside of active hours.
This technique was familiar to me from the Kindle jailbreaking scene, in which creating a directory with a certain path would cause the Kindle's auto-updater to error out when it tried to `rm` what it saw as a preexisting partially-downloaded update file (the Kindle's OS is Linux-based, so the file-delete operation fails on a directory).
[0] https://www.windowscentral.com/how-prevent-windows-10-reboot... (including the "Additional Steps")
Shift-shutdown didn't prevent this either.
Unexpected updates was a primary reason I am now using Linux full time (rather than part time as previously).