Windows Media Services 4.1 supports only the Microsoft Media Server (MMS) protocol and the Hypertext Transfer Protocol (HTTP) protocol. Windows Media Player 9 adds support for the Real Time Streaming Protocol (RTSP) protocol. However, support for the MMS protocol began to be deprecated in Windows Media Player 9. Windows Media Player 11 does not support the MMS protocol. Therefore, if the HTTP protocol is not enabled on the Windows Media Services 4.1 server, Windows Media Player 11 cannot connect to the server.
Windows Media Services 4.1 supports only the Microsoft Media Server (MMS) protocol and the Hypertext Transfer Protocol (HTTP) protocol. Windows Media Player 9 adds support for the Real Time Streaming Protocol (RTSP) protocol. However, support for the MMS protocol began to be deprecated in Windows Media Player 9. Windows Media Player 11 does not support the MMS protocol. Therefore, if the HTTP protocol is not enabled on the Windows Media Services 4.1 server, Windows Media Player 11 cannot connect to the server.