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Jasbling

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When trying to open a calendar:  The messaging interface has returned an unknown error. If the problem persists, restart Outlook.

When trying to open a calendar:   The messaging interface has returned an unknown error. If the problem persists, restart Outlook. When I re-start Outlook (closing all the open mails and meetings&.) the calendar then becomes available again
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Himalik
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Please see the following link .http://cs.its.uiowa.edu/exchange/problems.shtml#unknownerror. It explains this situation as a known bug with Outlook 2007.

"Microsoft has now stated as of 6/7/07 that there is a bug regarding shared calendars disappearing when users are in online mode.  This fix is expected to be rolled into Office 2007 SP1.  In the meantime we recommend that you run Outlook 2007 in Cached Exchange Mode if you are having this problem.

"The Messaging interface has returned an unknown error." occurs when trying to view a shared calendar

In Outlook 2007, an error may occur when trying to view a shared calendar from the People's Calendars list. The error will say "The Messaging interface has returned an unknown error.  If the problem persists, restart Outlook."  Restarting Outlook does resolve the problem.

Microsoft has confirmed that this is a known bug with Outlook 2007.  We are currently waiting to hear back from Microsoft as to the decision on whether this will be resolved by a Hot Fix or included in Office 2007 Service Pack 1."
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Hello Jasbling,

Outlook 2007 SP1 is now available
http://office.microsoft.com/en-us/downloads/default.aspx

Hope this helps!
war1
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Jasbling

ASKER

Thanks for the comments guys, I should have put this alreadybut the install already has SP1 installed :0(
I may just yrt a reinstal and see what happens.

Ill post a message once the user has done some testing.
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war1
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