Windows 10: Cannot unlink my Microsoft account from local Admin account

Hello, I am unable to unlink my personal Microsoft account from the local account on the computer I am using, for some reason the option that would usually be there is just non existent as shown on the picture below. I'm using the latest windows 1909 build as well if anyone was wondering.



:)

 

Unable to unlink MS account back to local


Did you clean install Windows, or is that a new computer which came with pre-installed Windows 10, or possibly did you upgrade from Windows 7?

This must be your case but needs to be eliminated as the cause: I have only seen option to switch to local account missing two or three times, all of them had the same background: User had upgraded to Windows 10 from Windows 7 which was used the built-in administrator account being the only user account. Users had activated the built-in admin account, changed it's name and used it as their normal user account "to get full control".

Using built-in admin account as normal user account was fully possible in Windows 7 and although it's an extremely bad idea, many users did that. The problem is the upgrade to Windows 10; upgrade process accepts the user account used to start the upgrade as is, not questioning or notifying it being the built-in admin account. When upgrade is done this account will be the default account making using Windows difficult as no UWP apps will work.

When this account is then accidentally or on purpose switched to Microsoft Account it is impossible to switch back to local account. Notice that this issue as described above is only possible when upgraded from Windows 7 to 10 using built-in admin account, a clean installed Windows 10 does not allow built-in admin to be switched to Microsoft account.

To eliminate the above scenario, upgrade from 7 done with built-in admin account as the reason for your issue could you please post a screenshot of your Local Users and Groups control panel. To do this press WIN + R and type lusrmgr.msc in Run dialog, click OK. Double click Users on middle pane:





Now take a screenshot and post here, see example:

 

Unable to unlink MS account back to local


Thanks for the prompt reply. It's definitely a Microsoft account. Here is the photo showing the no option to change back to a local account.

 

My admin account switched to a user account!

Unfortunately that is not possible. Microsoft provide no mechanism to do so because it shouldn't be possible to link the built in Administrator account in the first place - except that it can happen under a specific limited set of circumstances....

Unable to unlink MS account back to local

If that is indeed the case here, then a clean install is the only remedy.