Windows Media Player cannot find your network proxy server. The
name of the proxy server might be incorrect or the server might be
temporarily unavailable.
To change the name of the proxy server
On the Tools menu, click Options, and then click
the Network tab.
In the Streaming proxy settings area, double-click the
protocol that you want to configure.
Click Use the following proxy server, and then type the
name of the proxy server and the port to use. Contact your network
administrator for the correct proxy server name and port.
Note
If you are connected to the Internet through a
dial-up connection, you might not be able to choose the proxy
server. For more information, consult with your Internet service
provider (ISP) or network administrator.