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

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6 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…

iOS 27 calendar crashing

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