Pretty brief, but important steps to check. sometimes mostly the issue is that the client computer has an account on the domain, but it has not been added to the domain from the client computer itself!Make sure you create the account with proper permissions on the domain.Make sure the client computer has an account on the Active Directory (AD), add the client computer to the AD, actually from the client itself (right click on my computer, properties, under the computer name tab you have the choice to ad the client computer to a domain).Make sure you have setup a valid user name with permission to log on to the server.make sure you're specifying to log on to the domain and not the local computer at the logon screen on the client computer.------------------------------------------------------------------------------------Set up AD on server.Set up administrator account on server.Go to client computer and right click on My Computer, click on properties, go to the Computer Name tab and click on change at rename this computer or add it to a domain.At the add computer to domain using the account with permission on the domain (second step)Client computer is going to be added to domain, it takes like 3 minutes that might seem that the client computer is frozeen, and when you log in next time, you'll have a choice on the logon screen to login to the local client computer or the domain.Read the steps from Microsoft:
http://www.microsoft.com/technet/pro...5.mspx#EASAE:)