Ports to Open when using a Firewall or Proxy Server
Some Windows 7 operating systems come pre-installed with games such as Solitaire, as well as Windows Internet Games. If you are using a Firewall or Proxy Server to connect to the Internet, you will need to open specific Ports to play Windows Pre-Installed Games.
Most work, school, and public computers connect to the internet through a firewall or proxy server. You may also have a firewall if you have a Broadband (Cable or DSL) connection on a private computer.
To play Windows Pre-Installed Games while using a Firewall or Proxy Server, open this range of TCP Ports:
28000 - 29100
To open these ports, consult the help files for your firewall software or contact your network administrator or IT technician for assistance.