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

In my case, all of the 'phantom' objects are for Events that I've declined but were sent to a list address OR Events that I was listed as the "organizer" for but were NOT created in Calendar.app (either crated in OWA or MS Teams).

So I did some additional checking. ALL of the Events in my exchange account that show the "This event was imported (read-only)" message have the following things in common.

1. It does not matter whether the organizer shows as me or not

2. It does not matter whether I am in the 'To' list or received the invite as part of a list.

3. For events where I AM the Organizer, the Event was NOT created via Calendar.app.

And then did a BUNCH of testing to see what would / would not result in a 'phantom' Events that could not be deleted.

I added the mailing list email address for several 'phantom' Events to my contact card. I closed all apps after saving to Contact, verified the updated details showed up in my contact card on iCloud.com (I don't have any contacts in my exchange account and I don't think Exchange has a concept of a "me" contact card anyway), and then rebooted. I still see the events and cannot delete them.

I also noticed that I could NOT delete events where I WAS in the TO list OR where I was the organizer and the event was created outside Calendar.app (M$ Teams or OWA).

I also tested whether having an "online meeting" changed anything - it did not.

Additionally, I found that cancelling Events that I had scheduled outside of Calendar.app resulted in 'phantom' Events that still could not be deleted - even though they no longer show up in OWA, on mobile (iPhone / iPad) or M$ Teams.

Finally, for meetings that were addressed directly to me, I no longer have an option to change my response option from 'accepted' to 'decline' or 'tentative' (maybe) either. So there is no way to REMOVE ANY Events in Calendar.app any longer.

Guess I'll be using OWA and Teams for everything now.. Might as well stop using Mail.app as well since I'll have to be in OWA anyway.

Hi fronesis47

I'm also on an Exchange account that's admin'ed by my university. I'm intrigued by your suggestion to change the default email on a "proprietary profile page" – can you explain what you mean by that? My uni offers the usual Exchange desktop suite plus Office 365 on the web and a university-specific page where I change my uni-wide password every couple of weeks. But I'm not sure what you mean by "proprietary profile page"...?

I note that my official uni email is first name initial dot surname @ uni domain. But the Exchange login is just username @ uni domain, which looks like an email.

Thank you!

@Marcus

First, I’m fairly certain your issue is just like mine. Those different emails are what’s confusing the apple calendar. Somehow you need to get the exchange server either to recognize both email addresses as you, or to switch your default email address to the one you log in to exchange with.

For me, my university has an old setup that they still use by long pre-dates when they went to exchange, where you’d log in to a “my.Uni.edu” page. From there you could link to lots of different university web services – payroll stuff, course management systems, etc., and also link to Office 365 stuff. They have a page there that’s “my profile” and changes I made there propagated to the Exchange server.

You need some way of updating your exchange profile, either directly (which was blocked for me) or indirectly (which is what I did).

Good luck!

Suffering the same problem. Exchange events showing as imported read only at random. Some are ok, some are problematic. Originally It seem to be coinciding with me set as organiser. I tried to remove myself as organiser in web Outlook. Result... random :(

Hi everybody, had the same problem. Here is what worked for me as a local solution:

1) Go to the calendar view in your exchange account (e.g. outlook) and create a new calendar under your exchange account e-mail (in Outlook in calendar view, click on the three points beside your e-mail and choose "new folder")

2) name this calendar for example "items to be deleted"

3) sync your calendar - that should make it appear in your Apple calendar

4) switch to your Apple calendar app and see if the new calendar has appeared

5) if so, select one or all non-wanted items, and assign them to the newly created calendar ("items to be deleted")

6) switch back to calendar view in your exchange account app

7) delete the newly created calendar ("items to be deleted") - click on the three points and choose "delete folder"

8) sync your calendar - that should make it disappear from your Apple calendar

Finished! I hope it works for you, too

fronesis47: You are correct. 15.2 did not fix this issue; at least not completely. I was too quick on the trigger to say it did.

HOWEVER, it does improve things. It seems that stuff is still added to the calendar as read only. However, NOW, I can go into System Settings -> Internet Accounts -? Exchange account, and deselect (disable) Calendars. Select to "Delete from My Mac," then wait some time to ensure all is deleted, and then re-enable the Calendar.

It populates only that which I accepted in the first place and all the other stuff is gone.

While annoying, this is a little better situation than it was before....

aps

The above solved the problem for me. To repeat the above with a simplification, "I went into System Settings -> Internet Accounts -> and then to the Exchange account, and then disabled the calendar for the particular Exchange accounts. I also selected to "Delete from My Mac."

I waited just a few seconds, reclicked the "calendar" box for the Exchange account, then quit and restarted calendar without restarting my macbook. Problem solved for now. I suspect I'll have to do this again in the future when the same problem of events I cannot delete are on my calendar. Thanks

Thank you so much! My problem was with an external appointment scheduling app (it was switching the label of the event to canceled, but I couldn't delete it). Toggling the calendar on and off successfully removed all the canceled appointments.

For me (Sequoia 15.3.1) company Exchange account has different e-mail from Username and this must be the case/reason for broken Integration of Microsoft calendar into macOs Calendar. Kudos to one researcher: https://forums.macrumors.com/threads/exchange-calendar-in-calendar-app-sequoia-bug.2442155/

I experience (after Apple Intelligence update/introduction) broken Calendar app with Exchange account:

I cannot see Check Availability... function (always loading, query does not complete) which is crucial to set meetings;

I receive meeting invites (and updates) through mail and Calendar / Intelligence only picks up these on the next day when systems wakes up from Sleep;

Which is unacceptable.

Please rollback these Broken updates or fix existing features and make Integrations work again as they should!

This is such a silly problem to exist, but for me the 2 main posted solutions worked.

1) can disable and re-enable the calendar account after "fixing" any invites via outlook on the web or wherever else outside of calendar. this clears the old junk but as others have said, more invites to mailing lists & other weird addresses will cause new issues down the road.

2) using the "void" calendar works great. Any of the read only calendar events I move to that void calendar, then I can delete if I want, or just keep it hidden and remove alerts.

On another note I was an old Mac user that recently switched back, I used my iPhone as the main tool for years along with windows Microsoft outlook. I'm finding it very hard to keep things organized as far as consolidated calendar, mail, etc. I have office for Mac and Microsoft 365 but am trying hard to not use them - I should be able to use Mac calendar, mail, etc for everything all in one place. But this Microsoft & apple collab needs some help still, from both sides it seems.

Anyway, thanks to the posters who suggested these solutions.

I've added my work group mail to my addresses in Contacts and then I was able to decline/accept the events that were previously read-only!! No more unwanted events in my calendar!

Thanks for the tip!

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

This works!! I love you!

I did this, but it only works temporarily: unwanted calendar events will build up in future and you'll have to do it again. I had hoped it would fix the problem, but it only clears out the garbage.

I (bet that many other users) cannot adjust Username / e-mail difference (so they match) to account they do not own.