I think I got it fixed with a registry edit. it seems there was an issue with how default browsers are handled and the "user choice" hash. Something in the update must have caused an issue, so all the "default app" junk that goes on in the background was stuck in a logic loop or something.
I...
Hey there, I made an account just to jump into the discussion. I have the exact same problem as you: default apps screwed up (especially Firefox), flashing icons, unsuccessful rollbacks and re-installs. I've narrowed something down: take a look at task manager and CPU usage of explorer.exe and...