I am using Windows 7 Home Premium.Suddenly I am getting the following error within Windows Media Center:-
“Display Driver error.The video playback device does not support playback of protected content.”
This problem may be caused by several things:-
a>It may be due to audio issue.It can be fixed by updating the audio driver.
Some times Setting up audio output for 5.1 instead of 7.1 in speaker fixes the issue.
Some times un-check “Allow applications to take exclusive control of this device.” under the sound advanced properties helps.Open Control Panel> Click on Sound icon > Select your default Sound device > click properties > go the Advanced tab. Under Exclusive Mode un-check “Allow applications to take exclusive control of this device.” >Click OK.
b>It may be due to graphic card issue.Old driver may be incompatible.Updating the graphic card may resolve the issue.
c> See also:-
HDCP over DisplayPort is not validated in Windows 7 Media Center.
I found that changing fullscreen mode to windowed mode or vice-versa within Media Center sometimes fixes it.