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Ahmed_Y Author

Level 1

14 points

install MacOS Catalina: An error occurred validating the installer data. The download is either damaged or incomplete.

I'm trying to install MacOS Catalina on my Mac; But, I get this message every time i try "An error occurred validating the installer data. The download is either damaged or incomplete."

Posted on May 7, 2020 3:35 PM

Top-ranking reply

dialabrain

Level 10

124,649 points

Posted on May 7, 2020 4:00 PM

Delete any copy of "Install macOS Mojave" from the Applications folder. Try downloading it again while in Safe Mode.

How to use safe mode on your Mac - Apple Support

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install MacOS Catalina: An error occurred validating the installer data. The download is either damaged or incomplete.

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