New
#1
Optional Update KB3172605
Went ahead and installed this optional update this evening. My PC got stuck at the "Preparing to configure Window. Do not turn off your computer" screen.
Had to boot in Safe Mode and do a System Restore.
Just wanted to let people know. It might be a good idea to do a complete backup (image) of the disk before installing the update, just in case System Restore fails for some reason...