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SBS 2008-Security Database and Trust Relationship

This morning a user restarted his computer and was presented with the following message when attempting to logon:
"The trust relationship between this workstation and the primary domain failed".
I was unable to logon to the computer using the local admin account to disjoin and rejoin the domain to reestablish the relationship. I then removed the computer from the network in the SBS 2008 console and recreated it. When attemting to logon now, the message reads:
"The security database on the server does not have a computer account for this workstation trust relationship".
In the SBS Console, under Computers-Status, I see the computer name with the status saying:
"Unknown-No computer is mapped to this computer account (dnsHostName is empty)."
I can see the computer in the DNS Manager and can ping it both by name and IP address.
How do I go about rejoining and reestablishing this computer to the domain? Keep in mind that for some reason, I cannot get on locally to this computer (which, as it always seems to be, is the boss's computer!).
Thank you very much for any help!
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ctsuhako
Asked:
ctsuhako
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1 Solution
 
enriquecadalsoCommented:
I think you can not do it from the server. Try to log on the computer using a remote desktop connection with the local administrator account to join the computer to the domain.
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NJComputerNetworksCommented:
is the boss a local administrator?  ask him to attempt login for you...
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ctsuhakoAuthor Commented:
I have tried that. I can't seem to login with the usual local admin account that I normally use. I generally setup a local account, but to be honest I can't remember. It would be unusual for me not to have set one up, but the usual name and pw don't work.
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NJComputerNetworksCommented:
you may have to try to get into the workstation... try something like this:

http://www.petri.co.il/forgot_administrator_password.htm
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enriquecadalsoCommented:
If you can contact your boss tell him how to define a new password for the local administrator account. Also tell him to check if Remote Desktop is enabled.

But if he is not local administrator he may not have the rights to do that... In that case try to use some local credentials of an administrative account previously used on that computer.
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ctsuhakoAuthor Commented:
Tried one of the local admin password reset utilities (Offline NT Password & Registry Editor http://pogostick.net/~pnh/ntpasswd/) as suggested by NJComputerNetworks. Was able to reset the local admin pw to blank (the account was locked out) and login and disjoin and rejoin back to the domain. All is now copacetic. Still, I am curious as to how a simple reboot could have caused this issue.
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NJComputerNetworksCommented:
Good to hear...thanks... I'm glad I was able to assist you with the solution.
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enriquecadalsoCommented:
ctsuhako, I think you should have split the points assignment. You confirm that also followed NJComputerNetworks suggestions. Maybe you should use Request Attention to reopen or reassign points.

Tried one of the local admin password reset utilities (Offline NT Password & Registry Editor http://pogostick.net/~pnh/ntpasswd/) as suggested by NJComputerNetworks.
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