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What does this mean? Com.apple.Buildinfo.preflight.error error21.

Reinstalled Monterey on my erased iMac hard drive, but cannot update my Apple ID settings. It just spins for hours. Tried to go into Recovery to reinstalled Monterey and got the following message: Com.apple.Buildinfo.preflight.error error21.

What does this mean and what is the workaround?

Posted on Mar 3, 2023 4:19 AM

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Question marked as Top-ranking reply

Posted on Mar 3, 2023 4:57 AM

to sure by what exact method as used before


But the information for erasing an Intel Computer and reinstalling are in >>


Links below


Use Disk Utility to erase an Intel-based Mac - Apple Support (CA)


How to reinstall macOS - Apple Support (CA)


3 replies

What does this mean? Com.apple.Buildinfo.preflight.error error21.

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