For Windows Vista, Windows 7, and Windows 8: C:\Users\Username\AppData\Local\Microsoft\Windows Media\
For Windows XP: C:\Documents and Settings\Username\Local Settings\Application Data\Microsoft\Windows Media\
You need to replace the word Username for your windows Username – which is the name you log into your computer with. Once inside this
folder, double click on the (Windows Media Player) version number– mine was “12.0”.
Now inside the folder, delete any files that end in XML – I had two in there. They look like “Wmsdkns.xml”
After deleting these XML files, refresh your browser and the videos will play again.