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The installer is damaged / An error occurred loading the update

Hi,


I was able to finally download macOS Big Sur but the installation fails every time with one of the following two errors. Is it because of the knownApple servers issue or I've somehow corrupted something on my laptop?


Thanks


Posted on Nov 12, 2020 8:57 PM

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Question marked as Top-ranking reply

Posted on Nov 13, 2020 9:43 PM

I was able to fix my problem by deleting the following file and restarting my computer.


/Library/Preferences/com.apple.SoftwareUpdate.plist


I didn't have to delete the macOS Big Sur installer, the installed proceeded successfully after following the step above.


Hope it helps.

3 replies

The installer is damaged / An error occurred loading the update

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