You receive the "An unknown error has occurred" error message when you move a mailbox from one store to another store by using Exchange Task Wizard in Exchange 2000

When you try to move a mailbox from one store to another store by using Exchange Task Wizard in Microsoft Exchange 2000 Server, you receive the following error message: Additionally, the following error events are logged in the event log.

Event ID 1008

Event Type: Error
Event Source: MSExchangeAdmin
Event Category: Move Mailbox
Event ID: 1008
Date: 04/05/2004
Time: 09:51:35
User: N/A
Computer: Computer_name
Description: Unable to move mailbox 'Mailbox Name'. Error: An unknown error has occurred.

Event ID 9172

Event Type: Error
Event Source: MSExchangeAdmin
Event Category: Move Mailbox
Event ID: 9172
Date: 04/05/2004
Time: 09:51:34
User: N/A
Computer: Computer_name
Description: Failed to copy messages to the destination mailbox store. Error: An unknown error has occurred.

Hotfix information

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 hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel. Note Because of file dependencies, this hotfix requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.