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Event ID: 8208 Source: EXCDO

Source
Level
Description
Calendaring agent failed with error code <error code> while expanding recurring appointments.
Comments
 
- Error code: 0x8000ffff (Error code 0x8000ffff) - You may see this event during the troubleshooting procedure of the "503 Service Unavailable" error message in Outlook Web Access in Exchange Server 2003 as described in article ME823159.
- Error code: 0xfffffa1d - This error is seen if there is a corruption of the Calendar items in a mailbox or if the Calendar Folder on the mailbox is not accessible due to permissions issues or if there is a corruption in the database that the mailbox is homed on. See MSEX2K3DB for additional information on this issue.
Error code: 0x8000ffff (Error code 0x8000ffff) - This error normally arises when you have an antivirus scanner scanning the M drive of an Exchange 2000 Server, and it causes appointments to lose data, most often start and end dates. To cure, do not scan the M drive; I'd also advise not to scan any network drive you may have mapped to the Exchange Server's M drive on your workstation (if any, e.g. net use <drive> \\<Exchange Server>\m$.) This information is taken from Microsoft Article ME298924. Please note - it also seemed to occur when a user tried to move a personal calendar into a public folder where she did not have permissions.
Error 0xfffff9bf -  My server crashed and I tried to fix it using the eseutil repair option. After this, this event occured (also I got a lot of events id  1023 from pop3svc).
Error code: 0x8000ffff (Error code 0x8000ffff) - See ME305030.

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