This article was previously published under Q311535
This article has been archived. It is offered "as is" and will no longer be updated.
After Microsoft Outlook 2002 receives a meeting request in the Inbox, Outlook 2002 may create a duplicate calendar appointment. If a Collaboration Data Objects (CDO) application calls GetAssociatedAppointment and places a meeting in your Calendar first, and then you click the meeting request in Outlook 2002 to open it, a duplicate appointment is created. Microsoft Outlook 2000 does not create duplicate appointments in this scenario.
This problem can occur if CDO was not updated to reflect the way that Outlook 2002 uses index PR_OWNER_APPT_ID to determine duplicate appointments.
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.The English version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Because of file dependencies, this fix was omitted from Exchange 2000 Server Service Pack 2 (SP2). The fix that is described in the following Microsoft Knowledge Base article supercedes this fix:
313863 XADM: Update Method Results in Duplicate Calendar Entries with Outlook 2002; Post Exchange 2000 SP2 Fix
You must apply the fix that is described in Q313863 after you install Exchange 2000 SP2.