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Wayan_V Author

Level 1

15 points

iCal not syncing with Exchange calender in OS X 10.10.2

iCal is not syncing with an Exchange-based calendar with the OSX 10.10.2 update on my 2012 Macbook Air.

Any calendar events added since the software update are not replicated to the main Exchange account, nor are new events made in other calendar programs replicated back to iCal. This includes calendar events made on the Apple Calendar app on an iPhone 6/iOS 8.1. iCal shows events made before the software update, just none after. Google Apps-based calendars in iCal are not effected, only Exchange-based ones.

I have deleted and re-authorized the Exchange calendar in the Calendar applications on the Mac and the iPhone, and this problem still exists. My workaround is to abandon iCal and to use BusyCal 2 for OSX, which does sync with the Exchange-based calendar. BusyCal 2 does sync with iPhone Calendar, so the issue is specifically iCal in 10.10.2

1. Is anyone else experiencing this problem?

2. Does anyone have a potential solution?

Thanks in advance,

Wayan

OS X Yosemite (10.10.2)

Posted on Feb 11, 2015 2:12 PM

54 replies

MrFabius

Level 1

4 points

Jun 11, 2016 5:05 PM in response to RidDBik

Here is my solution: After deleting the Calendar caches as explained earlier it was still not Synching properly. Then I deleted all my Calendar items from the exchange account. I use for this Outlook for Mac, but you can probably use anything, just be sure to delete EVERYTHING from the calendar. It is now synchronizing perfectly between Mac Calendar, Outlook for Mac 2016, iPhone, etc. A little note: before deleting every Calendar item, I did an .OLM export. Unfortunately when I restore it back, it was missing a lot of appointment. I strongly suggest before the deletion, to export them one by one as .ICS files and or manually write them down somewhere. My best guess is that somewhere in the Calendar Exchange database there were a corrupted item, infact the OLM export-import will not work properly. I hope it helps Cheers

MacTjerk

Level 1

23 points

Jul 25, 2016 2:21 AM in response to nyespen

It helped me too. Initially it did not work, but stopping "CalendarAgent" made it work. Thanks!!

Sep 7, 2016 4:25 AM in response to Wayan_V

Thanks Wayan, this helped with clearing the calendars that failed to delete on iCal for OS Sierra Beta 7, However the. problem calendars did return after. 2 minutes. when iCal was restarted.

Note to all. The mentioned. Library and Calendar folder for this fix. are hidden system folders.

Sep 8, 2016 4:56 AM in response to Christendean

Finally managed to fix it.

Ended up signing out of iCloud on my iPhone and deleted all iCloud data from my iPhone.

I then re-deleted the cache files for the calendars in the Calendars folder in Library.

After that I logged onto iCloud directly and made sure was deleted there as well.

Following that, I dragged the recurred. calendars from iCloud to the. on Mac. section in iCal. managed to delete.

Has not returned! Problem solved.

Persistence pays off!

dr.si

Level 1

4 points

Oct 25, 2016 8:52 AM in response to Wayan_V

Just tried deleting the calendar cache - now i have no dates in my diary - and I'm a little stressed!?!

dr.si

Level 1

4 points

Oct 25, 2016 8:56 AM in response to dr.si

ok - delete last message - I switched it all off and on again and my diary is back - phew!! and exchange works ! cheers

benveen

Level 1

14 points

Nov 30, 2016 12:03 PM in response to Wayan_V

I used this solution and it helped. Exchange is now syncing with my calendar again. However, i lost all my delegate calendars and cannot add them again as the Calendar app continues to update the delegate list but without result. It is stuck somewhere in the process. Deleting and reinstalling the exchange account helps. I can reconfigure the delegate calendars but then after a few days i encounter the same syncing problems again. So the process starts from square one again, with clearing cache and loosing the delegates. Any solutions? Apple support blames Exchange but this is clearly an issue in the calendar app.