Hi I'm getting the following errors on my exchange 2003 server. We dont have the IFS or "M" drive enabled. Thanks Event Type: Error Event Source: EXCDO Event Category: General Event ID: 8206 Date: 11/16/2010 Time: 7:55:23 AM User: N/A Computer: MAIL Description: Calendaring agent failed with error code 0x80004005 while saving appointment. For more information, click http://www.microsoft.com/contentredirect.asp. Data: 0000: 48 72 53 61 76 69 6e 67 HrSaving 0008: 41 70 70 74 3a 3a 43 45 Appt::CE 0010: 78 70 53 74 61 74 75 73 xpStatus 0018: 3a 3a 5f 48 72 55 70 64 ::_HrUpd 0020: 61 74 65 52 4e 54 20 66 ateRNT f 0028: 61 69 6c 65 64 2e 20 4d ailed. M 0030: 61 69 6c 62 6f 78 3a 44 ailbox:D 0038: 69 64 69 6f 64 61 74 6f idiodato 0040: 47 40 72 76 68 2e 6f 6e E@abc 0048: 2e 63 61 .ca Event Type: Error Event Source: EXCDO Event Category: General Event ID: 8206 Date: 11/16/2010 Time: 12:07:04 PM User: N/A Computer: MAIL Description: Calendaring agent failed with error code 0x8004021e while saving appointment. For more information, click http://www.microsoft.com/contentredirect.asp. Data: 0000: 48 72 53 61 76 69 6e 67 HrSaving 0008: 41 70 70 74 3a 3a 5f 48 Appt::_H 0010: 72 55 70 64 61 74 65 4d rUpdateM 0018: 61 73 74 65 72 46 6f 72 asterFor 0020: 49 6e 73 74 43 68 61 6e InstChan 0028: 67 65 73 2e 20 4d 61 69 ges. Mai 0030: 6c 62 6f 78 3a 4d 61 63 lbox:Mac 0038: 49 6e 6e 69 73 4c 40 72 Innis@ra 0040: 76 68 2e 6f 6e 2e 63 61 bc.ca

This problem occurs because a counter is incremented every time that a recurring meeting is modified. This counter eventually reaches a limit. This limit blocks additional modifications. There is a hotfix for this. http://support.microsoft.com/kb/943721 DJ Grijalva | MCITP: EMA 2007/2010 | www.persistentcerebro.com