I’m developing an app on .NET8 for macOS and encountered an issue during App Review with feedback:
"An error showed upon launch. The app cannot be opened because the developer cannot be verified. This may be due to an issue with your app’s Gatekeeper conformance."
Additionally, the provided screenshot showed this message:
"Application is damaged and can't be opened. Delete and reinstall from App Store."
When I run this: security find-identity -vp macappstore
(Missing required extension) in result list
jaroslavic
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I have implemented the suggested changes, but the app was rejected during review.
Guideline 2.1 - Performance
We still encountered one or more bugs in the app during the review on a Mac running macOS 15.
The error message states:
"The app cannot be opened because the developer cannot be verified."
This issue might be related to your app's Gatekeeper compliance.