Similar issue, some help for you

type regedit in the dialog/search box in the start menu to edit your
registry. However, in mine, there is no audio under windows current version
file. Should I reinstall?


"Chris Morgan" wrote:

Well Leonardo I think your findings is this error solution would be very
helpful to me. But I have windows vista and the same thing is happening to me
but I cant figure out how to open use regedit to examine or change it. I
typed that phrase in the dialog box after clicking on start then run. I also
tried typing in exactly how you have HKEY_LOCAL_etc. It tells me there is no
such thing can be found. Do you have specefied directions for a very
appreciative computer illiterate like myself?
I would greatly appreciate an answer. It has been driving me insane.
Also do you no a way around downloading kazaa or limewire to windows vista.
I have to buy songs buy the track off urge and then I can burn them to a cd
because of that error code. If you can tell me how to cahnge that setting
atleast I can play protected audio files. But vista wont let me finalize the
downloads of kazaa or limewire and you seem to be on the right track. Noone I
know has a clue including tech support guys that I payed money for. Maybe you
should be designing the new windows program or working for microsoft!!!!!!!

"Leonardo Valencia" wrote:

Well, after much struggle and research I finally figured out the problem when
trying
to play proteced songs in Windows Vista with WMP 11.

In my particular case I was getting this original error:

C00D7159: The policies that the Input Trust Authority requires to be
enforced are unsupported by the outputs.

So if you are experiencing a different problem this solution might not work
for you. But I am sure it will work on most cases like mine.

The crux of the problem is that in my computer the DRM subsystem does not
trust the audio devices so it refuses to play protected content. It took me
a while to find the origin of the mistrust. In first place my sound drivers
were signed by microsoft nonetheless! so that should take care of that issue
no?

Wrong, it turns out that most important than having signed drivers is to
have the Operating System actually enforcing that! If the OS does not force
the audio drivers to be signed the DRM system will not play protected music
(even though your drivers are signed).

So lo and behold, my windows vista was shipped from the factory with the
signing checking disable. I guess that the reason is that most of the drivers
out there are still unsigned (because of the recent release) so the OEMs
prefer to disable the checking to make sure that a lot of old hardware still
works.

The registry entry that controls wheter or not windows vista enforces signed
audio drivers is in the following path (use regedit to examine/change it).

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Audio

And the entry is called

DisableProtectedAudioDG


When it is set to 1, the system does not check for signed drivers and the
protected content refuses to play.

So I only changed the value to 0, and restarted windows, now Vista does
enforce the protected audio and my protected music plays !!! (my normal music
also plays).

Be careful though, if your audio drivers are not signed, then, changing this
value to 0 will probably disable your music playback (not 100%).

So if your problem is that you don't get music at all, then try setting that
to 1, but if your problem is like mine (no protected music and you do have
signed drivers) then set the value to 0.

I hope this information is useful to any of you.

Best regards,

-Leonardo Valencia







.