I just ran across something that I'd like to pass on, as it is something that I spent an entire day on before the light bulb went off.On my computer, I disable WINS and NetBIOS because we don't need them here. I generally map drives via "net use" but occasionally use the GUI, and in both cases in Windows 7 I could not map drives using the same syntax that I used with Vista and XP and earlier.For example, a command such as net use t: \\sales.contoso.example.com\reports /user:contoso\johnqpublic worked fine using Vista, XP, and earlier versions of Windows. But it did not work under Windows 7.None of the following changes resolved the problem:- turned off UAC- turned off the Windows Firewall- used a non-administrator accountWhen I tried the above "net use" command, the error was "System error 53 has occurred. The network path was not found."The solution was to use the fully qualified domain name, as in the following command: net use t: \\sales.contoso.example.com\reports /user:contoso.example.com\johnqpublicJust wanted to pass it along, as I just stumbled across the solution on my own through sheer luck.

Hi SteveM58, I built two environments for testing this issue: 1. Windows 7 in domain. 2. Windows 7 not in domain. In these environments, your command net use t: \\sales.contoso.example.com\reports /user:contoso\johnqpublic works fine. Given the situation, I suspect this issue is caused by DNS Suffix. Could you please verify it? Thank you for your cooperation.