Cannot install macOS High Sierra Error Message

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macgroupie Author

Level 1

33 points

Cannot install macOS High Sierra Error Message

Hello, I am running macOS Sierra 10.12.6 on a iMac (Retina 5K, 27-inch, Late 2015) with a 3.2 GHz Intel Core i5

I have downloaded the most recent version of the installer macOSUpdCombo10.13.6 and I get this error message:

iMac 27″, macOS 10.13

Posted on Dec 9, 2020 12:37 PM

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Answer 1

Niel

Community+ 2025

Level 10

740,075 points

Dec 9, 2020 2:34 PM in response to macgroupie

Open the Mac App Store, click on the Updates tab, and install any security ones which appear. If you still get that error message, delete and redownload the installer; you may need to restart in Safe Mode(press Shift) or use a wired Internet connection.

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Cannot install macOS High Sierra Error Message

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