Just tried to access one of my local TV's websites. CH4 to be exact. There's a lot of stuff you can catch up with or view again for free.
This is the first time I've tried this feature, and the first thing I tried to watch resulted in the message "Your DRM seems to be corrupt. Carry out the following to rectify this", or words to that effect.
Up until this moment, I've never had a problem viewing or listening to anything online, and I can still listen to and watch my usual stuff with no problems.
The solution suggested was this:-
I don't know too much about this, and I've never purchased anything online in way of music/films etc., but I do have a lot of my own CD's ripped to the HD. Could following those instructions be a bad idea?
My gut feeling is to ignore it, and not bother with CH4.
If you've bought any licensed Windows Media Audio files (.WMA) deleting the DRM licenses will probably void those purchases. If you haven't bought licensed music downloads the DRM folder should be empty with nothing in it.
I have no ideal what that site is talking about since I've never seen that before, but then again I don't religiously use WMP, it only gets launched to stream a song or video on rare occasions.
I know on my system the DRM folder is located in (it's a hidden folder):
C:\Documents and Settings\All Users\DRM
Edit:
This is just a complete guess, but perhaps it's a setting in WMP that's conflicting with that website.
It appears I don't have a DRM folder in that location, although I confirmed in theSoftware > Microsoft > DRM reg entry that the location is the same one you pointed out. I have never ever purchased anything online, which may account for that.
The part of that site I was looking at, I think is very new, and the lack of a DRM folder probably threw it into a hissy fit. I've no idea.
Anyway, your info tells me that it's probably a fault on their end and not mine.