This article was previously published under Q252820
This article has been archived. It is offered "as is" and will no longer be updated.
If an Internet Message Access Protocol, Version 4rev1 (IMAP4) user logs on to an orphaned mailbox that has a home server property that is undefined, the information store may stop responding and you may receive an access violation.
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
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 Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.