I was going to mention Active X (I edited that out of my original post) but I am 99% sure its an Adobe Flashplayer issue. The people having problems have probably never downloaded it. Those of us who watch a lot of video content have to have it. It does not come with Windows and is a free download. Many video content providers prefer it and for many applications is superior to Windows Media Player.

The downside is, if you own an Apple computer or iPad, Apple won't release their code so that Adobe can develop an Apple version. Some video content providers will provide both Quicktime (Apples video media player) and Flashplayer, so you would never know that you have video viewer problem until you encountered a Flashplayer only video content provider. This is also why some You Tube videos won't open on iPhones or iPads (which I have both).

Correction: I was able to open it on my Macbook and iPad - just not the iphone. The iPhone gave a message "download the latest version of Adobe Flashplayer" -of which there is none for the iphone.