Recurring appointment that is associated with a meeting request may be removed from a recipient's calendar in Exchange 2000 Server or in Exchange Server 2003 (886688)

CAUSE

This problem may occur when the following conditions are true:

A delegate opens a recurring meeting request in Microsoft Office Outlook 2003 after the original recipient accepts the meeting request. Then, the delegate deletes it without accepting, declining, or marking the meeting request as tentative.
The recipient who is sent the meeting request by the delegate accepts the request by using a program or service that uses Collaboration Data Objects (CDO).

CDO may not correctly record that the meeting is recurring. When a delegate opens the meeting request after they sent it in Microsoft Office Outlook 2003, Outlook may overwrite the changes that CDO makes. This causes the meeting and its associated appointment to change the status of the meeting request to "not accepted." When a request is deleted without being accepted or if the appointment state is not accepted, the associated appointment item is also deleted

RESOLUTION

Exchange Server 2003

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Exchange 2000 Server

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Exchange Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Component: CDO\APPOINTMENT

Prerequisites

Microsoft Exchange 2000 Server Service Pack 3 (SP3)
August 2004 Exchange 2000 Server Post-Service Pack 3 Update Rollup:
870540 Availability of the August 2004 Exchange 2000 Server Post-Service Pack 3 Update Rollup

Restart requirement

When you install this hotfix, the following services are stopped and then restarted automatically:

Microsoft Exchange MTA Stacks
Microsoft Exchange Information Store
Microsoft Exchange System Attendant

Hotfix replacement information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date         Time   Version            Size    File name
--------------------------------------------------------------
17-Nov-2004  09:35  6.0.6617.22       720,896  Cdo.dll             
17-Nov-2004  09:32  6.0.6617.22       745,472  Mapi32.dll

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

301378 How to obtain the latest Exchange 2000 Server service pack