That's literally what happened in 2015 when I said OK to the Windows prompt to upgrade the OS from Win8 to Win10. After it downloaded and installed, I coupd no

That's literally what happened in 2015 when I said OK to the Windows prompt to upgrade the OS from Win8 to Win10. After it downloaded and installed, I coupd not log into machine with the local admin account I had. I had to create a Microsoft account, and only then could I re-enable local accounts. I was done with Windows after that. Crap like this was unthinkable before the "everything should be a SaaS" cargo cult era arrived.