sierra calendar will not sync recurring events to office365

[jcopeland]

The problem starts when you try to update a single event of a recurring event that has attendees. I can make a recurring event for every week on Monday at 1pm. After that I go and change next Monday to 2pm. I select this event only in dialog box. It will appear as it sent the update to the invitees however it never does. The event shows the changed time on sierra calendar however it does not update the office365 calendar neither in OWA or any other device connected including IOS devices. It also does not update the invited persons calendar.

The only way I can get this to work is by changing the events in IOS or in OWA. I am able to reproduce this on several different exchange servers and OS X back to El Capitan. It works perfect in Mountain Lion.

I have opened a ticket with apple and Microsoft and both point their fingers back at the other. Boss is super frustrated that we spent all this money on O365 and he can't use his calendar without a work around.

 

[campyguy]

I've posted on this matter in these forums - it's not an Apple or MS issue, it's an OS platform/permissions issue, and it's not new. I own and run a small company with 50-odd employees, using both Exchange Servers and O365. Cutting to it, stick to the same application on the same platform - Outlook 2016 for Windows is what we use. Honestly, there is no workaround for this, it goes back several years.

My latest post on this matter, with embedded links (long read):
https://forums.macrumors.com/threads/exchange-calendar-meeting-update-issue.2043164/#post-24526326

 

[jcopeland]

I am not sure I agree that it isn't an apple issue. Making changes to these events on IOS works perfectly. It started with OS X El Capitan. The only place this happens is on mac calendar app. OWA, Outlook, and IOS work flawlessly. Our Exec refused to use outlook and I don't blame him. You don't need outlook on mac. It is almost like once you try to change the recurring event on mac it looses sync to the server for that calendar event.

 

[campyguy]

Most of sync issues with "group" calendars were fixed in the last few days, coincidentally, with the exception of deferred calendars. I forgot all about this thread…

MS has posted several updated support articles about this matter, here's an example, updated earlier this week:
Schedule a meeting on a group calendar in Outlook