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Unable to Login to Apple ID on Big Sur

I recently updated to Big Sur and have been unable to sign into my Apple ID.


When I go to System Preferences -> Sign in, my log in doesn't exactly fail, it just loops me back to the beginning and asks me to enter my Apple ID and password 11.0.1 again. No error message.


I first noticed the problem when Messages asked me to sign in after the update. I tried logging out of my Apple ID from System Preferences, but have not been unable to log back in.


It still works on my phone, and I have confirmed the login/password I am using is correct. I have tried restarting.

I'm on a MacBook Air (13-inch, Early 2015) running Big Sur 11.0.1 (20B29).


Thanks for the help, I'm out of ideas.

MacBook Air 13″, macOS 11.0

Posted on Nov 16, 2020 6:28 PM

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Posted on Sep 23, 2021 12:45 PM

For anyone still having this issue, I have the answer. It's a keychains problem. Plug this into terminal, then hit enter, input your laptop PW and hit enter. Your computer will restart. Also make sure you have all programs closed but terminal before this.


sudo -v ; mkdir ~/Library/KeychainsBackup ; mv ~/Library/Keychains/* ~/Library/KeychainsBackup ; sudo reboot


This worked for me.

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42 replies

Sep 4, 2021 6:43 PM in response to cgapperi

Thank you. This worked. I have been stuck trying to find a solution. Original problem was that iMovies needed to be updated after Big Sur upgrade.

Attempting to install iMovies through the APP Store just hung. No clue that it was related to the Apple ID.

Other clues were that apps like iTunes and iMessage would not work. When i tried to open them, message appeared, 'Enter Apple ID.'

Preferences also requested reentering AppleID. Suspected the AppleID was also interfering with the App Store but there was no error messages or requests to enter AppleID on this app.


Ended up reseting AppleID pw, restarting the computer, reseting VRAM as other suggested. This made no difference and i think were a waste of time.

iMovies still wouldn't download.


Really appreaciate this post. After doing it, iMovies is downloading as expected.

Unable to Login to Apple ID on Big Sur

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