I left my PC upgrading to 14931 from the previous build. Came back after a couple of hours, and it is stuck in a reboot loop.
Gets past the BIOS, shows the windows logo, blanks the screen, shows the logo again, and then says Restarting
Not sure how far in the process it got.
This is on a Dell M6700.
I have backups, but going to do a reinstallation of the Anniversary Edition from scratch onto a new drive and then try again. This PC has been on the fast ring since the start, so has seen a lot of updates...