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When you receive an iCalendar Format (*.ics) file in Microsoft Outlook 2000 that was created in Microsoft Outlook 2002 or later and you double-click the file to open an appointment, the appointment file may not open.
This problem may occur if the iCalendar Format (*.ics) appointment file has a reminder set in the appointment file.
How to Obtain the Hotfix
This issue is fixed in the Outlook 2000 Post-Service Pack 3 Hotfix Package July 3, 2003. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
823324 Availability of the Outlook 2000 Post-Service Pack 3 Hotfix Package: July 3, 2003
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
307313 OL2000: Outlook 2000 and Outlook 2002 iCalendar Interoperability Problems