Unable to reach DFS namespace from Server 2003 Ent. w/SP2 Error Message: The specified network name no longer available.
Symptoms:
I receive the above-mentioned message when trying to navigate to \\Domain.local\MynameSpace or when trying to navigate to one of the two namespace servers the DFS namespace environment is made up for. When I try to navigate from Windows explorer to \\NameSpaceServ1\ I get the above message. If I try to navigate to \\NameSpaceServ2\ the network shares show up just fine. The problem only happens on Server 2003. Server 2008R2 or server 2012R2 work just fine. I can ping both file servers using their IP or hostname from the 2003 terminal server in question. I can also successfully perform NSLookup on both file servers. uninstalling AV client from \\NameSpaceServ1 didn't resolve the problem.
Following changes were made a couple of days ago:
Removed last 2003 DC and replaced it with 2012 R2
Raised domain and forest functional levels to 2008 R2
My Environment:
DFS Namespace:
\\Domain.local\MynameSpace = DFS 2000 mode
\\NameSpaceServ1 = Server 2012 R2
\\NameSpaceServ2 = Server 2012 R2
Terminal Servers:
\\2003TS1 = has the problem
\\2003TS2 = has the problem
\\2008TS1 = No problem
\\2012TS1 = No problem