Restore of a mailbox from a GRT (Granular Restore Technology) backup of Exchange fails with Final error: 0xe000ff00 - Unable to restore some Microsoft Exchange components because one or more of the databases are currently mounted or because the Recovery Storage Group is not properly configured.
Final error: 0xe000ff00 - Unable to restore some Microsoft Exchange components because one or more of the databases are currently mounted, or because the recovery storage group or recovery database is not properly configured. Use the Exchange System Manager or Exchange Management Console to check the configuration of the recovery storage group or recovery database and the mount status of the databases.
Final error category: Resource Errors
2. Make sure that the logon account corresponds to a unique mailbox (this is discussed in the related document http://www.symantec.com/docs/TECH24691)
3. Verify that the Backup Exec service account has Domain Administrator and Local Administrator rights on the Exchange Server. Explicitly add the account to the local admin group on the Exchange server rather than relying on group membership to imply permission.
4. Verify that the Backup Exec service account has Organizational Admin or Server Admin role in the Exchange Management Console.
5. Verify that mail can be sent to and from the Backup Exec service account mailbox.