Sometimes Windows does not pick up your ip automatically. You may have to set up the Windows network manually using the VNC Window. This is a Windows problem.
1. Go to your network settings in the Windows control panel.
2. Set up the ipv4 address. Find your network in the list below and use those settings.
Ip: 38.45.64.x - 38.45.67.x
Netmask: 255.255.252.0
Default gateway: 38.45.64.1
Ip: 38.45.69.x
Netmask: 255.255.255.0
Default gateway: 38.45.69.1
Ip: 38.45.71.x
Netmask: 255.255.255.0
Default gateway: 38.45.71.1
Ip: 38.45.72.x
Netmask: 255.255.255.0
Default gateway: 38.45.72.1
Nameservers can be whatever public nameservers you want to use. I use Google's 8.8.8.8 and 8.8.4.4