Unable to delete calendar invites on my Calendar App after macOS Sequoia update

I'm using Mac Sequoia and since the update my calendar from my Office 365 account appears as "this event was imported - read-only", which means I can't actually decline or delete any calendar invites. I can decline them on other platforms or devices (i.e Teams, Apple Watch or my iPhone), but even if I delete or decline an invite there, when I go back to Calendar app on Mac, the evenrs are still there. As a result, my days are absolutely full of events and meetings I won't attend, which makes organization a bit hard.

I didn't find any solution to this and it only happened after Mac Sequoia (I also have an Intel-based Mac and this problem doesn't happen there). Any suggestions? I tried disabling and re-enabling the account, no success.

[Re-Titled by Moderator]

MacBook Air, macOS 15.1

Posted on Oct 4, 2024 5:06 AM

Top-ranking reply

Marcus Foth

Level 1

137 points

Posted on Nov 13, 2024 4:20 PM

Still no resolution but some further insights:

This issue with calendar events being automatically created with the flag "This event was imported (read-only)" seems to only occur when someone sends a calendar invite to one of our staff mailing lists that I'm part of. So my work email does not appear as part of the invite list but I'm subscribed (system-generated) to the mailing list that the event was sent to. MacOS Calendar picks up all those event invites and pushes them into my MS Exchange work calendar read-only.

I found this Apple Support article, which does not resolve the issue: "If you can’t change a calendar or event on Mac" but it hints at what the problem may be: "If you can’t change an event you created, or you can’t change your status for an event you were invited to, it might be because you’re using an email address in Calendar that isn’t on your card in Contacts. Make sure all your email addresses are listed on your Contacts card." – I haven't tried adding our work mailing lists to my contact card and doing so would be absurd and not a feasible solution.

Do any Apple software engineers actually still read these Discussion threads and could offer some advice or a fix?

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Mar 7, 2025 9:11 AM in response to Armando Stettner

Hi, Yes, this resolves the current issue, but any new invite will stick as read-only, and you'll forever enable and disable it to get rid of these items. This is a workaround at best, and if you have a work calendar with thousands of items, the rebuild takes a long time, depending on server congestion.

Please keep it open; it's not a solution for enterprise customers. And yes, they love AppleMail and Calendar because Outlook or Google Calendar don't have this issue. It's a macOS issue. Why can't it toggle the read-only attribute via a terminal script?

Jan 28, 2025 12:20 AM in response to Armando Stettner

Deleting the account in Internet Accounts, rebooting and re-creating it resolved the problem for me.

AeBea

Level 1

8 points

Jan 28, 2025 7:18 AM in response to Armando Stettner

This works!! I love you!

Mar 7, 2025 9:12 AM in response to Sunny Bains

Agreed.

Mar 7, 2025 9:17 AM in response to fronesis47

Agreed. Still the same 4 months later. I tried adding an email address to the contact card, but that does NOT work.

Unable to delete calendar invites on my Calendar App after macOS Sequoia update

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Unable to delete calendar invites on my Calendar App after macOS Sequoia update