Contacts app hangs after macOS 27 update (Beach Ball issue)

Issue with Contacts Hanging after installing macOS 27 (26A428) Golden Gate [Beach Ball]


[Re-Titled by Moderator]

Original Title: plmipta

MacBook Pro 14″, macOS 27.0

Posted on Sep 27, 2026 4:42 PM

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Posted on Sep 27, 2026 7:19 PM

With help from Apple Support this issue has been resolved, this was the solution ...


Following confirmation the Contacts data was also stored on iCloud, the "com.apple.AddressBook.plist" file had to on my MBP was deleted 


The system was then shutdown and restarted 


This implemented a new "com.apple.AddressBook.plist" file to be installed on my MBP resolving the issue of the Contact application hanging

34 replies

Oct 29, 2026 1:09 AM in response to AirTag_disconnect_oldworkphone

Thank you. My only Contact card with a lengthy Note has 64 characters - way short of your 2000.

It seems there is an issue with GoldenGate and, in this instance, with the Contacts App.

I'm not going to reinstall GG again to see if the fault is fixed. If anything, I will wait until a couple more updates are released. Or try to install Sequoia as a 'safe' option.


Oct 29, 2026 12:14 PM in response to plmipta

I was having the same issue so tried to follow these steps, but after confirming that my Contacts are in indeed accessible on my iCloud account, I discovered there is no "com.apple.AddressBook.plist" file in my ~/Library/Preferences on my MacBook Air. Not sure how that could even be, but I did the restart anyway, and am still experiencing the same issue when I try to open Contacts. Beachball hang up. What else can I try please?

Contacts app hangs after macOS 27 update (Beach Ball issue)

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