Windows 10: Second user account appeared after cumulative update

I am on Insider Program. After doing a cumulative update, a second account appeared on startup screen. Before I was able to boot straight to desktop. Now I must select an account, enter PIN or password depending on which account I select. But no second account appears under users in settings.

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Want to DELETE second User Account at login

Hello, I'm using a Windows 10 PC and I am the only user. My administrator username is "John Doe".
Recently when I start the PC, I get 2 options for user login-"John Doe", where I click to enter my password and a second option to use a PIN, both have EXACT name "John Doe". The first option asks for a Password- it does not accept any PW I've associated with the account. When selecting the second option, the PIN box appears. I am then able to get to my desktop screen.

I want to do two things: 1) Delete the account that asks for the PW 2) Automatically login and go to my desktop screen. When I go to Control Panel user settings to delete it, there is only ONE account that shows. I've tried at least 6 solutions suggested, none have worked. Probably need step-by-step instructions. Thanks in advance.

 

Unknown second user account


I took the free upgrade to Windows 10 about a week ago. An unknown second user has started appearing on the password log-in screen. It has the name 'smmosbvjntf'. It is easily removed from the user account box but usually reappears on the log-in screen within 24 hours.

I also get a pop up from Tweakbit which wants me to use it to clean up my computer. I'm ignoring that.

I subscribe to Eset and have scanned my laptop several timesusing the Eset scan and have come out with a completely clean bill of health.

Any suggestions of how to rid myself completely of this unknown second account user?

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code: