The Following error occured while attempting to join the Domain "An attempt to resolve the DNS name of a domain controller in the domain being joined has failed. Please verify this client is configured to reach a DNS server that can resolve DNS names in the target domain. For information about network troubleshooting, see Windows Help." I upgraded from Windows Vista Ultimate to Windows 7 Ultimate where this computer was already connected to the domain. I say upgraded but actually did a clean install. I checked the Computer and User accounts on the server and everything seems correct. I made sure both objects were in the same OU. I tried manually and used the wizard. Same error. Is there something inherently wrong with Win 7 joining domains? I've joined domains a thousand times, no problem. Does anyone know why this is happening or is it some bad karma on my part?