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User profile for user: dhlovern
dhlovern Author
User level: Level 1
9 points

Upgrading to High Sierra 10.13.6

When I attempt to upgrade from the App Store I get a message that says 'the app is damaged and can't be used'? Has anyone else had this issue and is there an alternative to upgrade?

MacBook Air 13", OS X 10.10

Posted on Apr 16, 2020 10:30 AM

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User profile for user: macjack
macjack
User level: Level 10
111,204 points

Posted on Apr 16, 2020 11:59 AM

If it doesn't say "Download" in the AppStore, go to your Applications folder and check for "Install Mac OS High Sierra". If it is there, delete it. Then restart your Mac and try again.

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Upgrading to High Sierra 10.13.6

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