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 (870599)

SYMPTOMS

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:

Moving messages. CN=Domain_name,CN=Users,DC= Organization_name,DC=com: An unknown error has occurred.

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.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Exchange 2000 Server service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. 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.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   31-Jul-2004  23:39  6.5.6980.94        20,480  Exhotfix.dll     
   13-Sep-2004  04:47  6.0.6617.6      2,310,144  Mdbmsg.dll       
   12-Sep-2004  05:02  6.0.6617.6      4,685,824  Store.exe        
   15-Sep-2004  02:03                      1,824  Exhotfix.cdf
   31-Jul-2004  23:39  6.5.6980.94        20,480  Exhotfix.dll

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: