The upgrade balked on my desktop PC, “Sorry, it looks like this PC can’t run Windows 8.1. This might be because the Users or Program Files folder is being redirected to another partition.”
Indeed. So I tried my laptop, which is a standard installation. Both the download and the actual upgrade took an inordinately long time, gathering, fixing, looking, configuring, and a few reboots, but finally got to the EULA, and then the login screen.
I used my regular login, and that took me to the Microsoft Login screen. I don’t want to use a Microsoft account, but you can’t just click “Next”. So I put in an account, but intentionally futzed the password. Since I “didn’t remember” the password, I was asked if I wished to continue with my regular account.
Went through the rest of the setup, installed StartIsBack+, and it’s working pretty good at the moment. I haven’t noticed any performance increase, though. Lots of personalization to get back, too.
When I logged off the Administrators group account and logged into my normal user account, I didn’t have to go through the Microsoft Login screen. Just went straight to my Desktop.
Got work to do on my desktop PC if I decide to go with 8.1 on it.