#746 CalDAV sync broken with iPhone iOS6.3

[Markus Borst]

Hi,

after the last iOS update calendars can only be synched from the device to Exchange. New appointments in the mailbox are not synched to the mobile device.

Environment:
Server: Exchange 2016, DAVMail on a separate Windows Server, TLS enforced
Client: iPhone with iOS 6.3 (current version). Internal CalDAV calendar client.
URL used: https://<our_davmail_server>:1443/principals/users/<my_email_address></my_email_address></our_davmail_server>

Before updating to the current iOS version, synching worked fine in both directions. After update only iPhone to Exchange works, the other direction doesn't.

Initial sync works fine: If I disable the calendar temporarily, and re-enable it, all appointments are synched to the device.

I cannot discern, whether this is a problem in iOS or in DAVMail, but we need a solution for our users.

Greetings
Markus

[Markus Borst]

Correction: The iOS version in question is of course 16.3 not 6.3 (that would be very old).

Any update on the problem? Could you reproduce it?

Greetings
Markus Borst