Windows Media Player cannot play the file. You might encounter
this error message for one of the following reasons:
Your computer is not connected to the local area network (LAN)
or to the Internet. Connect to the network or Internet, and then
try again.
The path to the file is not valid. If you typed a Uniform
Resource Locator (URL) in the Open URL dialog box, verify
that the file name is spelled correctly and that the path to the
file is correct, and then try again. If you clicked a link on a Web
page, the link might not be valid.
The server is not available (for example, the server is busy or
not online). Try again later.
Some network protocols in the Player are not enabled. Enable
all network protocols, and then try again.
The proxy server settings for the Player are not configured
properly. Verify that your proxy settings are correct, and then try
again.
To enable all network protocols
On the Tools menu, click Options, and then click
the Network tab.
In the Streaming protocols area, select all the protocol
check boxes.
To verify your proxy server settings
On the Tools menu, click Options, and then click
the Network tab.
Verify your settings in the Streaming proxy settings
area.
Note
If you do not know what your proxy server
settings should be, on the Network tab, select a protocol,
click Configure, and then select Autodetect proxy
settings or Use proxy settings of the Web browser
(available for HTTP protocol only).