Windows Media played sound but no video

Symptoms

A web page have a media file streaming using windows media server, the video only have sound but no video. The Windows Media Player 11 won’t start up on its own.

Solution

Run Command Prompt as Administrator

and run the following commands

regsvr32 jscript.dll

regsvr32 vbscript.dll

Conclusion

Extend

There is also a windows media player plug in for MAC OSX provide by Microsoft

http://windows.microsoft.com/en-US/windows/downloads/windows-media-player