You may want to try and reinstall media player at http://www.microsoft.com/windows/win...

If that dont work disable any firewall software and reset ie web settings. try a different browser if you have one.

if using vista.

I then found this solution. It tells you to set the video rendering engine to OpenGL. I tried to use other settings and found that “DirectX video output” and “Windows GDI video output” also work. Here are the steps.

1. Open VLC media player.
2. Click on Settings and select Preferences… .
3. Expand Video and click on Output modules.
4. Check Advanced options in the lower right corner.
5. Set Video output module to either “DirectX“, “OpenGL” or “Windows GDI“
   
6. 
   

You’ll need to restart VLC media player after the change.