Recurring mtgs in Outlook. Cannot read one instance of this recurring appointment

Hi Experts,

We recently moved one mailbox from an exchange 2003 server to an exchange 2007 server, and the moved was fine, however, the user and his delegated are unable to open re-occuring meetings for his calendar.

Basically, the executive assistant of the user got this error:

Cannot read one instance of this recurring appointment. Close any open appointments and try again, or recreate the appointment. Outlook freezes, and she have to shut it down.

Any ideas?
Jerry SeinfieldAsked:
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Jerry SeinfieldAuthor Commented:
Any updates on this matters?
Check that Cached Exchange Mode is not on.

Can do so under
Tools>Account Settings>Open Users Account Details
Under Exchange Server Name, Untick "Use Cached Exchange Mode"

Close and reopen Oultook
Jerry SeinfieldAuthor Commented:
As I said, Cached mode works fine, online mode does not work

Use Exchange in cached mode, is not an option at the moment

Any other ideas?

Thanks in advance

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Actually, to be fair you never said anything about cached mode.

Perhaps the reason it appears to work fine in cached mode but not in online mode is because this appointment has been cached.

Ie exists in the user OST but not in the PST or Mailbox.

What Outlook client it being used?

Outlook 2003

Outlook 2007

What Office service Packs Are installed?

If its just one instance of the recurring appointment, would it be possible to just delete the recurring appointment or set and end date to the appointment and recreate it?
Jerry SeinfieldAuthor Commented:
Hi Apache09.
Thanks for the update

Below are my comments:

Users are running Outlook 2007 and all my servers are running Exchange 2007 SP2. The interesting thing here is, that all users are able to open any recurring meetings through OWA and Outlook in cached mode, but they are unable  to open any recurring meeting, no matters y they create a new one or an existing recurring meeting, the results are the same

I suspect that something is wrong with the mailbox server

Any ideas?
Jerry SeinfieldAuthor Commented:
we found that MSExchangeIS\9000 Private\Message Access was turned up to Expert. We turned this back down to Lowest and dismounted and mounted the test database, once the Database came back online the issue no longer occurred

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