User ID disappeared from login screen

I need immediate help. I have an IMAC and the User ID disappeared from my login screen. All it shows is the "Guest User", which requires a password that I do not have.


Has anyone else experienced this before? Or does anyone know how to fix it?


Appreciate any help.


Thanks

iMac 27″ 5K, macOS 10.13

Posted on Jul 12, 2021 6:39 AM

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Question marked as Top-ranking reply

Posted on Jul 12, 2021 5:00 PM

I have seen this happen due to a macOS bug with some Macs. Do you only have a single user account on this Mac?


If so, then the only way to recover is by creating a new admin user account so that the original user account reappears. In order to create a new admin user account you need to trick macOS into running Setup Assistant again so it creates a new admin user account for you. Try using the instructions in this link:

https://discussions.apple.com/docs/DOC-250002676


If this fixes the issue, then you will need to retain the new admin user account which most likely will not appear on the login screen since the bug seems to make the last created account disappear, but your original admin user account should reappear.

1 reply
Question marked as Top-ranking reply

Jul 12, 2021 5:00 PM in response to tomokon

I have seen this happen due to a macOS bug with some Macs. Do you only have a single user account on this Mac?


If so, then the only way to recover is by creating a new admin user account so that the original user account reappears. In order to create a new admin user account you need to trick macOS into running Setup Assistant again so it creates a new admin user account for you. Try using the instructions in this link:

https://discussions.apple.com/docs/DOC-250002676


If this fixes the issue, then you will need to retain the new admin user account which most likely will not appear on the login screen since the bug seems to make the last created account disappear, but your original admin user account should reappear.

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User ID disappeared from login screen

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