Windows updates couldn't be completed

[Petie]

Nope, Windows 8. It's very frustrating, especially as every 2 days, I have the option "update and shutdown" or "update and restart". No option to turn off without the bloody update.

Not that this solves the overall problem but you can at least skip the update process during a shutdown by locking your computer first (Windows + L) and then choosing Shutdown from the lock screen.