Rob hit an issue in migrating from SBS 2003 to SBS 2011 Essentials:
I ran into another, similar migration problem today. The domain name is dom-name.local and the netbios domain name is DOMNAME. Works fine in all regards except when trying to run the ComputerConnector.exe program to add the existing domain computers to the SBS 2011 Essentials dashboard. ComputerConnector.exe fails with an error saying “This computer is already connected to another Windows server.” Reviewing the CSetup.log file shows the following lines:
[02/10/2012 12:28:09 1ca4] NetJoinChecker::QueryNetJoinStatus – Compare domains xml: ServerDomain=dom-name ClientDomain=DOMNAME
[02/10/2012 12:28:09 1ca4] NetJoinChecker::QueryNetJoinStatus – Domain Joined, but to a different domain
[02/10/2012 12:28:09 1ca4] CSetup::RunTasks: Running Task: Id=-1 Description=Check Pending Reboot Index= 2
[02/10/2012 12:28:09 2594] CSetup::ReqsErrorDlgProc: IDD_PROPPAGE_REQS_ERROR Initialization
[02/10/2012 12:28:09 2594] NetJoin not valid, JoinStatus=4.
[02/10/2012 12:28:36 2594] wmain: End of CSetup: hr=0x80004005
This solution (edit the xml file – see below) worked great, although timing was critical. You have to start the Connect Computer wizard, let it pause at the first screen, and then modify the xml file. After that, the wizard ran fine.
1. On the client machine, edit the *ServerInfo.Xml* file at the
*C:\Windows\Temp\Client Deployment Files\ServerInfo.Xml*
2. Find the following contents:
3. Manually change the *DomainNetBiosName *value per your network
After that, please running CSetup from the temp folder above.
At this time, the client should be able to run the connect computer
Posted on this wiki here: http://social.technet.microsoft.com/wiki/contents/articles/7466.sbs-2011-essentials-domain-name-and-netbios-name-mismatch.aspx