When you try to connect from a Windows 2000 client to a Windows 2000 server, by using an alias, you receive:
A duplicate name exists on the network.</b>
To resolve the problem, implement tip 0062 » Give your machine a Netbios alias in Windows NT.
A Windows NT client may be able to connect using the \\Alias.DomainName.com format, without implementing tip 0062, because after a failure, it sends a Node Status Request for name to the server. The Windows 2000 server responds with a list of names that the server listens on, which includes its' primary computer name. The client then continues the session establishment process, as long as NetBIOS over TCP/IP (NetBT) is enabled on the server.