Attempt to Restore a Mounted Store Does Not Stop Immediately

If a database store is not dismounted before you attempt to restore it with Ntbackup.exe, Ntbackup.exe should stop immediately and report an error message stating that the store must be dismounted first. Instead, Ntbackup.exe may run for an extended time, finish, and then report "Unable to restore, check the application event log for more information." The event log contains entries that indicate that a database is in use. A final event log entry states "restore ended successfully."

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.