The link below may assist you to resolve this problem.

 

http://support.microsoft.com/kb/925705

 

1. Delete your DRM folder (C:\Documents and Settings\All Users\DRM)

2. Go to http://support.microsoft.com/kb/919589 and follow the instructions, which should take you to http://go.microsoft.com/fwlink/?LinkID=75378. As far as I can tell, the "Upgrade" button will not work without errors unless your DRM folder has been deleted. As mentioned on the page, you have to be administrator (or have administrator rights) on your local machine.

3. Go to any DRMed video (let's say a Match Highlight).

4. It will prompt you to update stuff, say yes, wait for the update. If that hangs, it's a problem with MS server. Or firewalls.

5. Click on "Close" once update is finished.

6. Refresh your page, your video should play. You might get the pop up thing saying "You have a license, click play".

 

From Folder Options - View Tab, 'Show Hidden Files & Folders' needs to be checked AND 'Hide Protecting Operating System Files' needs to be unchecked.