Windows 10: Cannot sign into existing Microsoft family account on new Windows 10 PC

I recently purchased a new PC, which came with Windows 10 pre-installed. Windows 10 Home, version 20H2, OS build 19042.1165 When I set up the PC, I signed in with an existing Microsoft account. So far, so good.Then I went to Settings -> Accounts -> Family & other users, and I see our other Microsoft family accounts in the section "Your family". For a family member, I clicked "Allow", so he could log into this PC. The screen changed from "Can't sign in" to "Can sign in", so this step seemed to work.Now the problem. Every time this family member tries to sign in, before the sys

:)

 

Setting up microsoft accounts for family safety - Windows 10

Hi,

thanks for the reply, but having tried everything you suggested - again. I had tried all these things initially and only raised the question when I ran out of things to try!

I still get the same problem. When attempting to following the steps below, the problem occurs at step 3 - when trying to "Sign in with a Microsoft account instead". This is where the unhelpful "Oops something went wrong" message occurs when entering the
windows password "for the last time".

The child's Microsoft account does exist, and I can log in to it via a web browser, but I don't seem to be able to link it to the account he logs in to the PC with. The troubleshooter just detects the fact that he is not logged in with a Microsoft account
(I ran this with both my account, which is fine, and then when logged in with the child's account)!

Check your child’s account on the PC that your child uses

• 
  Have your child sign in to the PC.
  
• 
  Open Settings, then select Accounts.
  
• 
  Select Your account.
  
  • 
    If your child doesn’t currently sign in with a Microsoft account, select
    Sign in with a Microsoft account instead and enter their email address.
    
  • 
    If an email address is already associated with their account, make a note of it. You’ll use it to add their Microsoft account to your family at
    
    account.microsoft.com/family.
    

 

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

 

Windows 10 Tweaks

As you may already know, Windows 10 (as well as Windows 8) allow you to log in with a valid Microsoft account, instead of creating a local account that only works on your machine. However, you may prefer to keep a local account for privacy reasons. If you do, though, some Windows 10 features—like Cortana—may not work. Despite the default behavior, the Windows 10 Store is not one of them. You can still log in to your Microsoft account for just the Store without switching to a full Microsoft account. The process, however, is not terribly obvious. To do so, follow these steps:

• Launch the Store from your Start menu.
• Click the user icon next to the search box.
• Click “Sign-in” from the menu that appears.
• Choose “Microsoft account” and log in like normal.
• When the “Make it yours” box appears do not enter your password. Instead, click “Sign in to just this app instead.”

from Lifehacker