Having an issue with one of our Win2k8 R2 file servers. Trying to access C$ or the Admin share is giving us an error (see error details that the bottom), however we are able to connect using the server's IP and FQDN.

• can access \\172.16.x.x\c$ with domain cred
• can access \\server.domain.local\c$ with domain creds
• cannot access \\servername\c$ with same domain creds

Server pings fine with Hostname, IP, FQDN, the Primary DNS suffix is also correct.

DNS, PTR and Wins records are all correct for the Server

I have checked that I am not trying to connect with cached credentials in the Windows vault, the server is also appending primary and connection specific DNS suffixes to the hostname.

Any ideas what might be causing this issue?

Error Details:

c$ is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions