Windows 10, odd behavior after restart - Microsoft Community

i hope makes sense, because don't still have message(s) appeared.

about 5 minutes ago restarted windows 10. when came , entered password, got message:

preparing windows

this seemed odd, figured there had been new update not aware of. however, when windows 10 came up, looked fresh install, , there popup asked account sign-in. when clicked on "never mind" (or whatever option read) got message couldn't access of files unless signed in, , changes made in session temporary (not saved).

i don't use account sign in windows , never have, seemed new, intrusive windows garbage. on hunch, did hard reboot reset button on case, , when windows came , signed in, got usual "welcome" message , desktop looked should.

while writing, occurs me may have been virus or malware, i'll run full scan when finish post on chance got through. i'm posting anyway in case else has had same experience.

i have anniversary update, , "winver" returns version 1607 (os build 14393.953)

i have not seen evidence of updates in past week or two.

thanks in advance.

hi chris,

this seems caused corrupt user profile. suggest run  system file checker. is utility in windows allows users scan corruptions in windows system files , restore corrupted files. run tool, follow these steps:

1. click start, type command prompt or cmd in the search box, right-click command prompt, , click run administrator. if prompted administrator password or confirmation, type password, or click allow.
2. at command prompt, type following command, , press enter:  sfc /scannow

you can run dism or system update readiness tool. fix windows corruption errors caused failed installation of windows updates , service packs. run tool, refer link.

once you're done running tools, restart computer , check.

let know how goes after performing suggested troubleshooting steps.

Windows / Windows 10 / Performance & system failures / PC