After you set up your Exchange account, Outlook connects with the Exchange server through the Client Access server to access your mailbox.
For more information see: Exchange Outlook Calendaring Problems.
Exchange itself is usually not the root of the problem, the mail clients (Active Sync, i OS devices, Blackberries, i Cal) and their connectivity protocol tend to be the culprits. For instance, if someone accepts a meeting at 9am on an i Phone and a delegate declines it at am on a PC, but the i Phone is out of signal range and doesn't sync the meeting until say am., what happens to the meeting?
When they receive a meeting invite or cancelation to the shared calendar account it updates their own calendar but not the shared calendar.
I have emptied cache and forced a re-sync but that just makes all three Macs have the same data. I'd update them to Office 2011/ Outlook but the Exchange server doesn't meet the minimum requirements.
This free/busy updating process is the same one used when you connect via Outlook Web Access (OWA).
There is nothing you can do in Entourage to change the time frame for which the free/busy information is updated, or demand that free/busy data be updated immediately.
This is primarily due to the complexity of the Calendar feature set in Office Outlook and Exchange Server, and the varied scenarios and products that touch the data on a calendar.
This includes, but is not limited, to the following items: By using this kind of information, we can eliminate many of the tools and steps listed in this article to diagnose the problem.
I accidentally deleted my entire exchange calendar. I have a back-up of the main identity file from just before the delete. Sure, except that when I swap out the current (without calendar data) main identity with the back-up main identity (with calendar data), the data populates the calendar, but then gets wiped when entourage syncs with the exchange server.
Specifically, the data disappears when syncing is at the "Updating sync issues" stage (as noted in the lower right hand corner of entourage during sync).
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