I have a Windows 2003 server that is our corporate Internet server. It doesn't have AD or WINS or DNS or DHCP installed on it. I have a PPTP VPN available from the firewall and I can create a VPN connection to this server successfully. I have created a Test folder to share and given everyone full access to it. I have made numerous attempts to map a network drive to it but nothing works; I get "The drive could not be mapped because no network was found" error message. I am wondering if I am missing a necessary Windows component on my server.
So how are you getting DHCP etc... on your network? You need to explain your full network topology so we can see how your logon progresses. How are you mapping? Can you ping the server with the share from the VPNed machines?
The server is a standalone and was not set up as a file server. The short answer to my original question was that I had to install WINS, DNS, and AD. I made this hard by overthinking it - turned out to be very easy and there are good instructions on the Web. Once that was done, I could map a drive successfully through the VPN. I guess that was what the original error message was telling me - "no network was found".
Sounds the the VPN connection isn't allowing access to the local-LAN. Yes, I did do Local Local Area Network. Within the VPN setting you will need to have it set to allow connections to the LAN, not just the VPN connection network.