Windows Media Player does not support the protocol that you are
using to access the file. If you clicked a link on a Web page and
received this error message, the link might not be valid. If you
typed an Internet address and received this error message, verify
that you are using a protocol supported by Windows Media Player,
and then try again.
A list of supported protocols and the correct syntax
follows:
mms://server/filename (for example, a file with a
.wma, .wmv, .asf, or .mp3 extension)
If Windows Media Player supports the protocol and you still
cannot play the content, verify that the Player is configured to
use all of its supported protocols.
To configure protocol settings
On the Tools menu, click Options, and then click
the Network tab.
In the Streaming protocols area, select all the protocol
check boxes.
Note
The supported protocols can be used only to
stream digital media files. Windows Media Player cannot be used as
a browser.