XGEN: MAPI Applications Opening Messages Simultaneously Do Not Save Properties Correctly

If you use multiple MAPI applications to open a message in the information store, and then make changes to an attachment (such as deleting the attachment), the properties for the attachment may not be saved correctly. For example, if an antivirus program deletes the attachment and a secondary MAPI application gains access to the message at the same time, the attachment icon is not removed, even though the attachment is deleted.

To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The following files are available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

Microsoft has confirmed that this is a problem in Exchange Server Version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.