Since installing MacOS 27 on my M4 Pro MacBook Pro, the iMessage app and FaceTime app refuse to open. After clicking either app, they appear to be trying to open then immediately say they are not responding. I have attempted to reinstall macOS via recovery mode and then sign out and then back into my Apple account. Also, I completely wiped my MacBook and reinstalled macos27 and it still caused the same issue.
MacBook Pro (M4 Pro, 2024)
Since a complete wipe and fresh reinstallation of the operating system did not fix the problem, the issue is not caused by corrupted local files or standard app preferences. Instead, this behavior usually points to either a specialized system permission glitch, network-level security blocks, or a hidden proxy setting interfering with Apple’s identity handshake.
Try the following targeted fix to resolve the issue:
Disable Auto Proxy Discovery
A known bug in some macOS versions causes secure connection timeouts with Apple Identity Services if hidden proxy flags are active—even if you don't intentionally use a proxy. Turning them off can immediately stop the app from crashing:
See if the problem is present when you boot in safe mode. That process performs some system cleanup and clears caches, and also disables 3rd party extensions that may cause problems.
Start up your Mac in safe mode - Apple Support
More info from Apple: If you can’t turn on or sign in to iMessage or FaceTime on iPad, Mac, or Apple Vision Pro - Apple Support
Since a complete wipe and fresh reinstallation of the operating system did not fix the problem, the issue is not caused by corrupted local files or standard app preferences. Instead, this behavior usually points to either a specialized system permission glitch, network-level security blocks, or a hidden proxy setting interfering with Apple’s identity handshake.
Try the following targeted fix to resolve the issue:
Disable Auto Proxy Discovery
A known bug in some macOS versions causes secure connection timeouts with Apple Identity Services if hidden proxy flags are active—even if you don't intentionally use a proxy. Turning them off can immediately stop the app from crashing:
See if the problem is present when you boot in safe mode. That process performs some system cleanup and clears caches, and also disables 3rd party extensions that may cause problems.
Start up your Mac in safe mode - Apple Support
More info from Apple: If you can’t turn on or sign in to iMessage or FaceTime on iPad, Mac, or Apple Vision Pro - Apple Support
iMessage app not opening on MacOS27
