This problem suddenly appeared and after I had successfully managed to connect to the servers. I recently purchased this Dell XPS 8300 with Windows 7 64-bit Home Premium and am trying to connect to a Win2000 and a Win2003 server. I can connect to other Windows 7 machines on this network without incident. I can see the servers in my network, but when I attempt to login, after the first login attempt I get the box showing MININT-9MI7DN\Admini... MININT-9MI7DN was the name of this computer before I renamed it. I then try to login using the "Use Different Account" option and I put in (server name)\(userid) and password, but then I get the second image attached to this post. I've also tried \(server name)\(userid) but with no greater success. Also, on the computer that is having problems, the system tray icon for the network shows the "X" but when I put the mouse over it, it shows Internet Access. And I do have Internet access on this machine since I am posting this message from the problem machine. I don't know if this system tray icon issue is related but, thought I would mention it. I have ensured that all computers are in the same workgroup. I have turned off IPv6 on the machine having issues. I have made sure that NetBIOS help for IPv4 is enabled. I have tested logging into these accounts on these servers from other Windows 7 64-bit machines, and have been able to do so without a problem. Any help that you can offer would be appreciated.