I had configured a new Domain Controller. There is a new windows server installed which has Windows Server 2008 x64 bit OS. Later on performing adprep, dns and ad ds role I went into the server and ran dcpromo.exe. I am trying to replicate the file roles to the new server. Now it looks to be working fine here. After a few while there is a dialog box on the screen which says about change domain controller. I went inside the Server Manager > Roles > AD Services > AD User and Computer, and found that DC is not available. While the status indicate that it is online. Can anyone help me out here.