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My Mac has No Admin account

My Mac has just one Standard user account (no additional account else).


I've had only one account which was the administrator of this Mac.

Recently I changed the account's username from "user" to "A" as I went to Users&Groups.

However after I close the Advanced Option window, I didn't get the change.

My account name is still "user", but the account was changed from Administrator to Standard.


Now I lost all the Admin control so I can't unlock the Users&Groups and of course, I can't allow this standard account to be admin again or change the name.

I already tried to unlock with username "A" or "user" but I failed.


I guess it made some error while changing the username and took my admin control away...


How can I get the admin control back? Can anyone help this problem?

iMac, macOS High Sierra (10.13.1)

Posted on Nov 20, 2017 4:24 AM

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Question marked as Top-ranking reply

Posted on Nov 20, 2017 7:26 AM

Change the name of your macOS user account and home folder - Apple Support


Here's a quick way to revert your Mac to the setup screen, where you can temporarily create a new (admin) account, boot into it, and change your other user back to admin (it will not affect your data!):

http://www.theinstructional.com/guides/how-to-re-run-the-os-x-setup-assistant

6 replies
Question marked as Top-ranking reply

Nov 20, 2017 7:26 AM in response to JustinaMoon

Change the name of your macOS user account and home folder - Apple Support


Here's a quick way to revert your Mac to the setup screen, where you can temporarily create a new (admin) account, boot into it, and change your other user back to admin (it will not affect your data!):

http://www.theinstructional.com/guides/how-to-re-run-the-os-x-setup-assistant

My Mac has No Admin account

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