Hi,
I've recently observed a sudden increase in support requests for one of my apps on the Mac App Store, reporting the error "<App> is damaged and can't be opened. Please re-download it from the Mac App Store", all on different systems: macOS 12, macOS 13, and macOS 15 Sequoia.
Re-downloading does not resolve the issue most of the time.
One user reported that being connected to the internet resolved it - perhaps this is an OCSP issue again?
I myself cannot reproduce this issue.
Has there been a change in code-signing recently? Have some certificates changed? Anything else I should be aware of?
What is the best course of action to have users take who experience this, when re-downloading the app from the Mac App Store does not work?
Thank you,
– Matthias