Hi On my Exchange 2003 SP2 server, I am seeing repeated Event ID 8199 (EXCDO) errors logged. The description is always the same referring to the same eml file: Calendaring agent failed in message save notification with error 0x80040219 on user1@company.com : /Calendar/Meeting.eml. There is also an Event ID 8260 Warning message stating that An attempt was made to save an appointment with the subject "Calendar Item" to mailbox User1@company.com. The duration of the appointment was too large, so it was not saved We have checked with the user and there is no entry named Meeting.eml in his mailbox. Any ideas on how to fix this? The user doesn't have a Blackberry or use ActiveSync - I was just wondering what was causing this problem and the best way to resolve?

I have a vague recollection that I had this same problem on my Exchange 2007 Server earlier this year. In my case it was some old recurring appointments in a few user mailboxes. There may also have been resources booked as part of the appointment which contributed to the problem. Deleting those old recurring appointments fixed the thing.Separately, we had very similar EXCDO issues that defied an attempt to find a legit cause. I found out quite by accident that they only started appearing when the Exchange server was rebooted. If I waited 5-10 minutes and then stopped and restarted the Exchange Information Store, the errors went away. I still do this IS restart habitually after rebooting the server, although I have no idea whether the underlying EXCDO errors are still there or not.

Hi, The possible cause for this issue is that the meeting has no end data set. We need to find the meeting and then delete it. If it is a MAC client. We have a known issue. When Mac client accessing a recurring calendar appointment greater than two years in duration. Event 8199 and event 8260 will be logged. We need to delete the meetings. Have you tried to use MFCmapi.exe to open user mailbox and then to find the meetings there? If you find Event 8217 8263,then We can try the "/cleanviews" and "/cleanreminders" switches for the clients experiencing the problem and then delete the calendar. Also we can try to disable all the add-ins for outlook. Besides, please try to run ExBPA to have a health scan and then post the report here. How many exchange server in your network? Please try to check the version of EXCDO.DLL, CDO.DLL and then post here. More related information to share with you: You cannot disable the "No end date" option for appointments, meeting requests, tasks, or task requests in Outlook 2003 http://support.microsoft.com/default.aspx?scid=kb;EN-US;952144 Regards, Xiu

Hi Xiu Zhang, On my Exchange server 2003 SP2, the repeated Event ID 8199, 8206 and 8260 (EXCDO) are logged as well. Description of Event ID 8260: An attempt was made to save an appointment with the subject "Sydney - Bus Continuity W/S" to mailbox userA@domainA.com. The duration of the appointment was too large, so it was not saved. I have downloaded the MFCmapi.exe tool and read the article http://technet.microsoft.com/en-us/library/bb508857%28EXCHG.65%29.aspx. Any guide on how to find and delete the error appointment from user mailbox? The appointment with the subject mentioned above cannot be found from user's mailbox. Please advice, thank you! Regards, Lee