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

After a delegate deletes a meeting request in Microsoft Office Outlook 2003, the recurring appointment that is associated with that meeting request may be removed from the recipient's calendar. This problem occurs even though the recipient accepted the meeting request before the delegate deleted the meeting request.

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

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:

Exchange 2000 Server

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

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

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem was first corrected in Microsoft Exchange Server 2003 Service Pack 2.