My Logitech webcam had an update via Windows update this evening. Downloaded, installed and restarted only for my Logitech mouse to not work at all.
First thing I checked was the batteries, they're fine. Tried ending any webcam software processes to no avail, restarted a few times and nothing and I also checked the Logitech forums that gave me nothing either.
I'm going to ask them tomorrow after I try Safe Mode, but it's late so I'm not doing it tonight.
Any ideas in the interim?
Reinstall the SetPoint software?
I booted up in Safe Mode and it worked, restarted in normal mode and it now works.