So, I’m running Windows Server 2008 R2 aka Win7 Server. I installed IE 9 but none of the videos on the Video Format Support Page are playing?

WTF? That page is from Microsoft to show off the HTML5 support in IE9.

Turns out that I’m missing the codecs for H.264 and AAC which are bundled in the Desktop Experience feature, which, on Server 2008 R2 is missing these codecs.

Easy fix though, Microsoft have an update for the Desktop Experience on Server 2008 R2, download, install and you’re laughing at silly HTML5 videos