Unable to Login to Apple ID on Big Sur

This fixed the problem for me. I had all sorts of mail account issues. My office 365 2FA was stuck in a auth loop, as too was my attempt to sign into icloud under system preferences.

Many thanks for this.

Brett

Thank you so much! I knew it had to be a cache issue bc it would not log into iCloud. Even after logging into https://appleid.apple.com/ and removing access to iMac and still would keep me in a loop asking to log in. Kudos to you for sharing!

Hello, and thanks for taking the time to read this:

I have the same Apple ID sign-in verification error, after upgrading to Big Sur. I tried the safe boot suggestion, but that did not work. Interestingly enough, I did create an alternate Admin account for troubleshooting, and am able to sign into my Apple ID on that account. After logging out, restarting, and logging back into my main user account, I am still unable to sign in to my Apple ID. I also tried deleting the Library Keychain folder (making a copy to my desktop), restarting, but that did not work either.

Since you recommend running Etrecheck, if the sign-in is allowed in safe mode only, I have not tried that suggestion. I would appreciate any help.

Best

Thanks for the hint. This worked!! After trying the safe boot, removal of .plist which neither worked, having tried with a different ADMIN account which worked, I followed your instructions and finally, after months of dealing with this, it finally worked.

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.

its absolutely pathetic and lazy SW development by Apple engineers to force users to do this.

i did this trick and now Macbook still doesn't recognize my password. I dont want to reset my account.

I am just furious at Apple engineer's "dont care attitude" and making users suffer!!!!

It accepts my password. Then in 30 seconds, the same thing occurs.

Good.

hi tcantin, thank you for your advice. unfortunately, I can't find the keychain folder. can you please help me?

best regards from Germany

Thanks a lot! This really helped! So after this is done, should the copied folder be deleted as well?

tcantin, this is the only thing that has worked for me! Thank you! (Give whoever figured this out the lead at Apple support as they are useless).

It worked for me and I could log back in. What do I do with that keychains folder now?

After spending hours finally this helped resolve the issue. Thanks a lot

Still didn’t work for me 🤦🏻‍♂️

YES. That did it. THANK YOU. Apple Support wanted me to wipe my hard drive and reinstall everything.