So I posted a while ago about this stupid error from Netflix and Silverlight, back in June of last year actually, and there’s still no real fix for it.  I have though figured out a way to use the new Silverlight 4 and not get the error and not have to revert back to SilverLight 3.

The fix is quick and easy just rename the mspr.hds file to something lese like oldmspr.hds. 

I’m using Windows 7 Pro X64 version and it’s located at C:/ProgramData/Microsoft/PlayReady

Of course on Vista and XP the files location is elsewhere, but it should be right under Application Data in a similar location. You could also just search for the folder or file to find it and then open the location.

Renaming that file seems to fix the problem for now. When you rename it Windows will create another one in the folder actually. So it might fix the problem and it might not. As of right now though I’m watching Netflix with no issues, so I guess I’m temporarily happy until the next update of Silverlight anyway.