Random Old Meeting Request - Reappears In Users Calendar

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I have had about 3 users who have experienced on different occassions an old meeting request from the past that has been resent somehow and added itself into their calendar. I have had a look through the system event logs and cannot see any errors that would point to this, exchange is running OK etc. Is there anywhere else I should be looking or is this just human error? We used outlook 2003 with exchange 2003.

Thanks in advance

AndyD_ [MVP]

Could be a cache mode issue. Are your clients in cache mode? If so, next time it happens, I would close Outlook on the senders and recipients mailbox, delete the .ost and let Outlook recreate.

Also make sure Exchange and Outlook are at the latest SPs and updates.

Does message tracking show the meeting request was actually sent?
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