Mojave upgrade glitch

I got the prompt to upgrade to Mojave. My Mac is compatible for such. But it does not complete the upgrade (several attempts already). "An error occurred validating the installer data. The download is either damaged or incomplete. Redownload the installer and try again." Any advice on what to do?

iMac 21.5" 4K, 10.13

Posted on Feb 4, 2019 2:53 PM

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1 reply

dialabrain

Level 10

135,539 points

Feb 4, 2019 3:00 PM in response to bone145

Try installing while in Safe Mode.

Use safe mode to isolate issues with your Mac - Apple Support

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Mojave upgrade glitch

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