Recommendations to avoid IOS Calendar Corruption with Exchange Mailboxes
Scenario: An entry on an IOS calendar shows incorrect times for an appointment, has disappeared, or is missing information, although the calendar entries in OWA and Outlook is correct. Specifically a single occurrence of a repeat appointment/meeting has one of the symptoms from above.
Recommendations from support:
1. Microsoft
recommends running the same version of Outlook on all the computers. Mailbox
owners and any delegates need to be using the same version of Outlook with the
latest updates on all the computers that are used for calendaring. If you are
in a mixed environment of Mac, Windows and iOS devices, each platform needs to
be using the same version and each device should have the latest updates.
2. Only one
person should process meeting requests. Other people, computers or devices that
receive the meeting request should ignore them, they should not delete or
process them. Users should have a maximum of 2 delegates.
3. Manage your
calendar exclusively from Outlook or OWA. Don't accept, decline, modify or
invite others to appointments from your mobile device. You can create new
appointments on your mobile device.
4. Verify
that the device has the latest iOS version installed. (Please verify this
before adding the Exchange account to the device. Sometimes, new devices are
running an older version of iOS, so it is a good habit to confirm that all
updates are applied before adding Exchange accounts)
5. To change an
entire series of meetings, cancel the original meeting and create a new one. To
change one instance, cancel just that meeting and create a new one to replace
it. Always put an end date on a recurring meeting.
6.
A "corrupt" meeting will remain that way until you delete
it. If it is a recurring appointment, delete all occurrences and reschedule it.
7. When
scheduling a recurring meeting, Microsoft recommends setting the end date no
more than 6 months. If you need to schedule a meeting for a longer period,
start a new recurring meeting.
8. Making
multiple changes to recurring events can contribute to unexpected results.