Why can't I update calendar events post-migration?
This is an old known issue where calendar events cannot be
updated post-migration. The actual origin of the issue is unknown.
This issue is not
specific to MigrationWiz; it is a defect in Microsoft products. Please refer to
the following Microsoft links:
• Outlook, Exchange and Out-of-Date meeting updates that are NOT OUT OF DATE!
• Meeting request is out of date
• Outlook Calendaring Issue : Meeting "Not Current", unable to accept meetingupdates.
• Recurring Meeting "Not Current," unable to accept meeting requests
• "This meeting request was updated after this message was sent"
There are some
indications this may be caused by a difference in clock times between the
Outlook client, and the Exchange server. It may also occur
in some scenarios where cell phones update calendar items during
This issue has been
confirmed to occur with Microsoft migrations as well, using the Microsoft
Exchange Mailbox Replication Service (MRS) Proxy service. In fact, there has
been an open case where a premier customer who has had this issue using MRS
(not MigrationWiz) since May 2014. Microsoft has not yet been able to
provide a solution. Based on the information provided in the URLs above, this problem has been randomly
affecting users for years.
investigated the issue in lab environments and, after migration from different
versions of Exchange Servers (a plain vanilla Exchange Server without any
customization), was unable to reproduce the issue using Outlook. Therefore, if
using Outlook and this issue arises, it may be specific to the data migrated,
or the environment. In some cases, BitTitan Support has received reports of
this issue with OWA, but not Outlook.
The only workaround
we've found is to have the organizer recreate the calendar event and send it
out to all the recipients.
• (Reference: Recurring Meeting "Not Current," unable to accept meeting requests)
search link in Google for more up-to-date information:
• This meeting request was updated after this message was sent
• Recurring Meeting"Not Current", unable to accept meeting requests
• Outlook CalendaringIssue: Meeting "Not Current", unable to accept meeting updates