Windows 10: Stuck in a pickle - Win11 21H2 defaultuser0 and no local Admin account to fix it.

I am installing new computer for my mother,OOBE ran bypassing ‘network account’ and added her login user as local without network. She is elderly and was having problems answering the supplied very limited security questions for password recovery. Resolving her frustration, I simply added her user account via command prompt “net user Mom /add” - all ok, she logged in and added her simple pw = okAll system updates completed. But now we have a problem with no local admin account abilities yes, I turned on hidden administrator account but the user defaultuser0 keeps coming up when anything w

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Local account installation question

I'm fairly certain that Skip this step was available in 10.0.130 - the workaround in Step 20 (back button) is no longer required.

The currently known, as of 10.0.130, ways to create a Local account sign-in are

• Skip this step at the MS account creation phase
• No Internet connection during the install
• static IP (post# 2 by Fragment) - New (to me anyway)

 

Windows 10 1607- Windows Creating defaultuser0 account

• Need detail on defaultuser0 account:
• why this account is created?
• Is this account is active on Post Installation?
• Can i reset password of this account?
• Can i login with this account as local user?
• Is this account have some special access?

* Moved from Insider

 

Can a Local Admin account manage a Microsoft Admin account?

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@Tr3: Wow !! Thanks for the comprehensive response.

BTW: There was an important sentence missing in my OP. That type of error is gradually occurring more often with me now. It was probably one cause of the Windows reset.

I should have said:

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- Also, up till now, I've always had a second Admin account just in case. I don't recall ever using the second Admin account, so I must be doing something right.

After being forced to reset Windows, I currently have one Local Admin account. [I now plan to add a second Local Account for safety. ]

Question: If I change the [default] Local account to a Microsoft account, can that account be managed by the [second] Local account Admin?
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I hope the corrections made above might clarify my plan.

I've started doing that since @dalchina rapped my knuckles here:

Am I an Adminstrator ? Will I still be Admin in an hours time?

I used Macrium immediately after the reset. Since then, I've been doing Diffs. Each Diff takes only 1 minute, because of the few changes between each Diff. But the changes themselves took a lot longer than 1 minute.

IMO, your suggestion to use alternate hard drives for backups is great. My plan had been to use 2 drives with identical contents, but I'm now going to follow your method.

Before the infamous reset, I converted the default Local account to a Microsoft account (my "primary" account). Then I created a second Microsoft account for safety.

I then went back to the primary account, and changed myself to a Normal user - as the big boys recommend. I did some stuff. I then needed to be Admin again for something. But I was unable to change myself back to Admin from within the primary account.

I switched to the alternative MS account. I changed the primary account back from Normal user to Admin. That final step is what I meant when I referred to "using one account to manage another account".

Your post has a lot of other useful stuff that I'm going to implement - with Diffs in between.

Thanks for your help.