macOS Calendar not syncing with iCloud

First off, iOS 18.6.2 is working perfectly on my iPhone 16 Pro Max. No issue with iOS syncing with Calendar.

However, there is a syncing problem with macOS. Specifically on my 2024 M4 16" MacBook Pro running Tahoe 26.1 (also Calendar not syncing with my 2017 iMac running Ventura 13.7.8). They both stopped syncing on October 9, 2025, until then everything was fine. No new Calendar events come down from iCloud since Oct. 9th (all the previous events pre-Oct. 9th are populated correctly).

Any solutions will be greatly appreciated.

Thank you

Posted on Nov 15, 2025 3:46 PM

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macOS Calendar not syncing with iCloud

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