Windows 10: User Account Inaccessible after Windows 10 Update and Reboot

After installing cumulative Windows 10 update for 20H2 and performing required reboot, went to Settings/Updates and saw error message saying there was a problem with the reboot and to repeat it. Ever since that second reboot I have not been able to access my acount.When I start my laptop, Windows starts up properly. At the account login page, I enter my password no warnring or error messages, the screen goes black and stays that way. Nudging the mouse makes the arrow pointer and a small rotating blue circle appears, indicating something is happening in the background, but it never finishe

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Strange Windows 10 User Account issue.

Unfortunately I had done those steps numerous reboots, it just, reappears for no good reason. The base account isn't even a Microsoft account, it's a local account.

I haven't quite tried the built in administrator account on W10, but so far in my experience on my own computer, the built in account seemed to have absolutely no more control than I did on my own.

It's just strange, I go in, it warns me twice about deleting the account, then it's gone. Reboot, and it's back?

EDIT: Just to specify, both command line and Netplwiz both say only HIS account exists on the computer, it doesn't list this rogue account. This is what I meant in my first post about the fact that even Windows doesn't seem to believe it exists, HALF the time. *Frown

 

Strange Windows 10 User Account issue.

Look at this thread,How to Delete a User Account in Windows 10, it may help. You can try the various methods.
Make sure you are using an administrative account when removing the account or log on using the Administrator's account.

Or, if you are patient and know what you are doing, manually remove it.

Either way, Goodluck.

 

Windows 10 New User Accounts

• Which is the new user account type you have created and facing these issue?

Built in Administrator account

Local Account

MS Account

2. Have you made any changes on these accounts after creating them?

Not initially. Tried rebooting, removing and readding after a reboot. Tried adding via CLI and GUI interfaces

After that I tried one of the suggestions and tried coping a good account over the newly created account. That did not work

3. Does this issue persists on any specific user account?

No it persists on all newly created accounts do not work

4. What are the troubleshooting steps you have created in resolving the issue?

Just the ones mentioned in Step 2

5. Do let us know if you have any user account with no issues on your computer?

only the initial account that was created when I upgraded to windows 10