Win 10 v1803 (with all udates) and Avast 18.8.2356 Many years ago (probably Win XP and an earlier PC) I did a restart with a pending Avast update and a pending Windows Update. That resulted in having to force the power off and do another restart. Today I just tried that again thinking that maybe the systems would work better together. Nope. After the updates the mouse was dead and the wired keyboard was dead. Nothing would get the system to move off the initial screen. So I forced the power off and restarted with success.
Is this a common problem?
-- Larry