An error occurs when you use the Export-mailbox or Restore-mailbox command to migrate certain mailboxes on Exchange Server 2007: "error code -1056749164"

When you use the Export-mailbox or Restore-mailbox command to migrate certain mailboxes on the computer that is running Microsoft Exchange Server 2007, you receive the following error: Additionally, the following event is logged in the Application log of the Exchange server:

Event Type: Error
Event Source:
Exchange Migration
Event Category: Restore Mailbox
Event ID: 1008
Description: Unable to move mailbox '<user name>'. Error: Failed to copy messages to the destination mailbox store with error: MAPI or an unspecified service provider. ID no: 00000000-0000-00000000

To resolve this problem, download and install Update Rollup 4 for Exchange Server 2007 Service Pack 1 (SP1) on the server that is running Exchange Server 2007. For more information about Update Rollup 4 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: For more information about how to install the latest Exchange service pack or update rollup, see the following Exchange Help topic:

For more information about the Restore-Mailbox command, visit the following Web site:For more information about the Export-Mailbox command, visit the following Web site:

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