iOS 27 calendar crashing

After updating to iOS 27, my calendar app keeps crashing whenever I create an event or tap on an event to see details. I’ve tried force quitting the app and rebooting, neither worked. Is anyone else having this issue? Does anyone have any fixes? Thank you!!

iPhone 17 Pro

Posted on Sep 15, 2026 7:45 PM

Reply
10 replies

Sep 17, 2026 7:34 AM in response to Bfra04

Exactly the same here. I’ve integrated several calendars; it seems (and in my case) that this only happens with on-premises Exchange servers. It doesn’t happen with all appointments, just some of them. No matter what I try, I haven’t found a workaround.

Furthermore, it is no longer possible to use the ‘View as’ function. It has simply disappeared.

all in all a very buggy experience so far…

Oct 19, 2026 3:29 PM in response to Bfra04

Since installing IOS 27.0.1, all of my Apple devices will not let me set a starting location in my calendar, the red “accept” arrow only shows if I pick a specific time e.g. 1 hour. I’ve contacted support and verified all of my calendar location settings are correct, but they keep treating this issue as if it’s a user issue and not software. Prior to upgrading IOS I did not have this issue. Is anyone else having this issue?

iOS 27 calendar crashing

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.