Computer always updating when shutting down
Sometimes, updates can be very large (especially service pack updates) so you need to be sure that you machine is actually stuck.
If they require a system restart, that’s a two-part process.
Most of the time, Windows Update does its job with little if any attention from us.
While we might check and install updates manually from time to time, most Windows 10 computers are configured to apply important updates automatically, while older versions like Windows 7 and Windows 8, usually apply these fixes the night of Patch Tuesday.
Sometimes, however, when the patch, or maybe even service pack, is being installed during shutdown or startup, the update installation gets stuck - freezes, locks up, stops, hangs, clocks... Windows Update is taking forever and it's time to fix the problem.
The installation of one or more Windows updates is probably stuck or frozen if you see one of the following messages persist for a long time: is all you'll see on the screen.