Hello, I have setup a DC and DNS in a machine running Windows Server 2003 Standard SP2. I am trying to connect my laptop running Windows 7 Professional (x86) but having some issues with it. I've entered my domain name (ROOBII) from the Computer Name/Domain Changes window. Entered the username / password, and then it said "Welcome to the Roobii domain." When I click OK, the following error pop up: --------------------------------------------------------------------------------------------------------------------------------------------- Changing the Primary Domain DNS name of this computer to "" failed. The name will remain "roobii.com". The error was: The remote procedure call failed and did not execute. --------------------------------------------------------------------------------------------------------------------------------------------- I checked Windows Server 2003, and noticed that my laptop name is listed there, under the computers OU. It also asked me to restart the workstation that I have just join to the domain. BUT... After pressing the Control + Alt + Del, when I try to log into the domain, I am unable to login using the domain credential. The error says: --------------------------------------------------------------------------------------------------------------------------------------------- The security database on the server does not have a computer account for this workstation trust relationship. --------------------------------------------------------------------------------------------------------------------------------------------- So I have to login to the local machine and not in the domain. Any help or assistance would be great. Thank you :)

Hi,1. Make sure your computer account is not disabled in Active Directory users and computers.2. Leave the domain and reboot the system, and then re-add the computer in domain for a test.3. Verify Domain Controllers settings.A) Start > Run > ADSIEDIT.MSCB) Go to Domain Partition and mark the affected computerC) Rightclick and Properties.D) Doubleclick ServicePrincipalNameE) Add new value: HOST/yourcomputername.yourdomain.xyz or whatever HOST is missing.However, if the issue persists, please also perform the suggestions from the link below:The security database on the server does not have a computer account for this workstation trust relationshipThanks,Novak