Mac Calendar.app freezes on trying to edit events

Question

Level 1

26 points

Mac Calendar.app freezes on trying to edit events

On the latest Sequoia 15.2, M1 Macbook Pro. Started happening yesterday. Any attempt to edit the body of an event causes a 1-2 minute freeze of the Calendar app, rendering it completely non-reactive/unusable in the moment when I place the cursor in any of the event fields. During the freeze, 1 CPU core seems to run at 100%.

Happens both on iCloud and on Exchange calendars.

On another Mac, configured with the same accounts and same MacOS version, no such problem.

I tried

force-quitting and restarting the calendar (also with Shift)
restarting the whole Mac
disabling/re-enabling the respective calendars on the iCloud and Exchange internet accounts.

Any idea how to debug this problem? The Calendar is a life-critical app for me...

MacBook Pro 16″, macOS 15.2

Posted on Dec 21, 2024 9:41 AM

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Answer 1

pjstarich

Level 1

121 points

Jan 15, 2025 11:45 AM in response to ttarchala

I have been struggling with this issue for weeks. I purchased a new Mac Book Pro (M4) and still experiencing the calendar freezing issue. Restarted in safe mode; no change. Reinstalled Sequoia 15.2; no change. Multiple calls to Apple support; no resolution. There is clearly a problem with calendar in OS 15.2. Can someone at Apple please address this issue?

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Answer 2

DavidG74

Level 1

79 points

Dec 28, 2024 9:37 AM in response to ttarchala

I have the same problem on an M3 MBP. Extremely frustrating. Everything was working ok before Sequoia. I sync iCloud and Google calendars to my Mac.

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Answer 3

Dec 30, 2024 12:52 PM in response to ttarchala

I have the same issue after updating to 15.2 (24C101) on a Apple M1 Pro.

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Answer 4

pjstarich

Level 1

121 points

Jan 2, 2025 5:17 PM in response to ttarchala

I have the same issue when trying to create new appointments. Calendar becomes unresponsive and requires a force quit. Grrrrrr. Running MacOS 15.2 on 2019 Mac Book Pro with 2.4 GHz Quad-Core Intel Core i5 CPU.

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Answer 5

Jan 9, 2025 3:22 AM in response to ttarchala

I noticed that if you activate another app you can just wait for a few seconds (>5) and then it unstucks, and quickly closes the edit popup without saving the data … CPU Usage is at ~100% all the time :'(

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Answer 6

TobyLT

Level 1

12 points

Jan 5, 2025 11:23 AM in response to ttarchala

Same thing is happening with Calendar on my Mac mini. Like many users , this is a feature that has to be functional.

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Answer 7

goldtech

Level 1

8 points

Jan 7, 2025 9:01 AM in response to ttarchala

I have the same issue with MacBook Pro, M1 Pro, Sequoia 15.2, Apple Calendar v15.0 (2995.3.2) using iCloud and Exchange Accounts.

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Answer 8

Jan 8, 2025 7:43 AM in response to ttarchala

I have the same issue. I tried to unlink all my account and tried on empty cloud calendar, the same issue MBP m3max. Would anyone from official apple support provide any answer?

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Answer 9

Feb 26, 2025 11:25 AM in response to ttarchala

same issue => when i click on the Event Title it freezes for One(1) to 2 minutes

on any event

i have turn off icloud and same : /

please help apple 🙏🏿

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Mac Calendar.app freezes on trying to edit events

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