All apps from App Store can't launch and quit immediately after updating to High Sierra

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Level 1

8 points

All apps from App Store can't launch and quit immediately after updating to High Sierra

I did an update from Sierra to High Sierra this morning..... now every app downloaded from app store fail launching and just quit saying The code signature is not valid....!?

This is a major fault on Apple's side, and it seems that they are just leaving it like that probably forcing users of older machines to buy new hardware.

GET YOUR ACT TOGETHER APPLE!!

BEING A DEDICATED APPLE USER SINCE 1986 I'M STRONGLY CONSIDERING A PC NEXT TIME.

MacBook Pro 15″, macOS 10.13

Posted on Dec 2, 2020 1:35 PM

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Answer 1

Owl-53

Level 10

102,553 points

Dec 2, 2020 1:46 PM in response to Vibraphan

I am sorry to read about your issue. But this specific issue has been ongoing since November 12, 2020 that coincided with the release of Big Sur macOS 11. There is some type of CodeSigning issue, that to date, has not been resolved by Apple. To read more on this issue use the search Codesigning word and will see many long discussion on the Apple Community Help Forums.

Otherwise, suggest giving Apple your Feedback Here

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Answer 2

Dec 8, 2020 12:19 AM in response to Vibraphan

There is a long discussion here:

https://discussions.apple.com/thread/252037712?answerId=253977725022&page=20

And someone, with a lot of patience, found a solution.

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All apps from App Store can't launch and quit immediately after updating to High Sierra

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