Error #65031
Windows Media Player cannot play this DVD because there is a problem with digital copy protection between your DVD drive, decoder, and video card. Try installing an updated driver for your video card.
User's solution
This works!
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Install any decoder software that should have come with your DVD or CD drive- for instance nero essentials. I had a problem because it is only these official device decoders that allow windows media player to play DVDs
Comments
uninstall all the decoders u have installed like, k lite and ffdshow. i solved my problem to this today. i also went to device manager in control panel and clicked on cd/dvd drivs and disabled the one that plays my dvds, in my case it was a blu ray drive, after u have disabled it by right clicking and pressing disable. i then restarted my computer and then when it had restarted went back to device manager and enabled the dvd drive that i had originally disabled and everything worked fine :D hope this helped. Adam