When trying to update to Catalina I get: " A copy of the install macOS Catalina.app application is damaged and cannot be used to install macOS " So how can I update if the app is damaged ???

Question

When trying to update to Catalina I get: " A copy of the install macOS Catalina.app application is damaged and cannot be used to install macOS " So how can I update if the app is damaged ???

My question is for MacBook pro support OS Catalina

Posted on Jun 25, 2020 2:21 PM

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Answer 1

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Phil0124

Level 10

216,986 points

Jun 25, 2020 2:24 PM in response to Photobear7458

Open the Finder, and go to the Applications folder.

Find the Catalina installer App and drag it to the trash, then empty the trash.

Then go back to the Mac App Store or (Software Update if you are running Mojave) and download the update again.

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Answer 2

Jun 26, 2020 11:16 AM in response to Phil0124

Thanks Phil. That solved my problem. 10Hrs later after backing up my computer and then downloading Catalina. I was able to get on my laptop top work.

One major concern though. The matchbook pro seems to heat up a lot easier now. The fans are coming on a lot. Can you tell me if there is an issue with the Catalina OS with the heating issue ? I have noticed a few other comments to that effect also.

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Answer 3

Phil0124

Level 10

216,986 points

Jun 27, 2020 10:29 AM in response to Photobear7458

Catalina is a bit more CPU intensive, which by definition generates heat. This means the fans will come on more to reduce that heat.

It should not cause any real issues however. It should also be reduced as time goes buy and all the post installation processes such as indexing and optimization complete and are not running concurrently.

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When trying to update to Catalina I get: " A copy of the install macOS Catalina.app application is damaged and cannot be used to install macOS " So how can I update if the app is damaged ???

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