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400 operation caldavaccountrefreshqueueableoperation error

Posted: Fri Sep 16, 2016 12:25 pm
by 54sddfd34
Hi,

We use Zimbra mail 7 and one of our users uses a Mac. He uses iCal to import his calendar it worked fine for a long time but now he sometimes gets errors
Te error message is: 400 operation caldavaccountrefreshqueueableoperation error

I've added a screen of the error as attachment. Does someone know a solution for this error?

What we've tried:

- Deleting the iCal cache
- Removing his calendar and adding it again.
- Putting off alarms for calendar items.

Thanks in advance.