Article ID: 951870 - View products that this article applies to.
You use Microsoft Office Communicator 2007 and Microsoft Exchange Server 2003. You schedule a meeting and then cancel the meeting in Communicator 2007. When you do this, the following events may be logged in the Exchange Server 2003 event log:
Event ID : 8239
Event ID : 8206
To resolve this problem, install update 951662.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/951662/ )Description of the update for Communicator 2007: April 30, 2008
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.