I would love to see a clearer (to me) answer to this question, especially regarding in-house certificates. I want to revoke a certificate to encourage users of an in-house app, that was built on that certificate, to discover that their apps no longer launch on their devices and then to download updates to the app (built, of course, on a new certificate. How long will it take for these in-house apps to stop launching?

Same problem here. Our app, which works on all other versions of iOS, crashes on iOS 18.x We know that it’s an Enterprise development problem because when we sign the same app with a regular developer's account certificate the problem goes away. I'd like to know if anyone here is successfully launching Enterprise account apps on iOS 18.