I had the same issue with my lab and my PC. I was able to setup my account on first login, but after a restart my Microsoft account was innaccessible. Pin and password were useless.
It seem to be related to the SAM being corrupted after the update. If we try to run NET USER, it return user databse is corrupted.
User and computer return no groups and users. I don't realy trust this build, so i revert back my PC to 14295. Just keeping my lab alive to know if the issue will fix by itself next build. :)
04-07-2016 09:11 PM