I have a computer server with windows server 2003 operating system and there's no problem to joining domain to a windows 2003 server from computer client with windows xp professional OS.
But later, i installing a new client computer with windows 7 ultimate OS and i unable to joining domain server.
Everytime i trying to join domain from control panel -->system and security-->system--> change setting and choose member of domain with the domain server name,error messages appears. " 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 Domains.
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