Found it - gpedit.msc > Computer Configuration > Windows Settings >
Administrative Templates > Windows Components > App Privacy > Let Windows apps
access the microphone
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx> on
behalf of Matthew van Eerde <dmarc-noreply@xxxxxxxxxxxxx>
Sent: Wednesday, June 20, 2018 4:28:38 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Detecting and blocking microphone usage
Windows supports the first two natively via Start > Settings > Privacy >
Microphone; I believe there are ways to set these via group policy as well
You can write a user-mode solution for the third using the session manager APIs
– IaudioSessionManager, IAudioSessionManager2, IAudioSessionNotification
https://blogs.msdn.microsoft.com/matthew_van_eerde/2013/09/26/getting-peak-meters-and-volume-settings-for-all-apps-and-audio-devices-on-the-system/<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fblogs.msdn.microsoft.com%2Fmatthew_van_eerde%2F2013%2F09%2F26%2Fgetting-peak-meters-and-volume-settings-for-all-apps-and-audio-devices-on-the-system%2F&data=02%7C01%7CMatthew.van.Eerde%40microsoft.com%7C201d0459e35d42bd52e508d5d6a10ac0%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636650909548379786&sdata=HB3e2rBZhRvjeNwHHpVVKcV59s2XCxoci80LyON9FLs%3D&reserved=0>
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx> on
behalf of Paul Jackson <mailnew4ster@xxxxxxxxx>
Sent: Wednesday, June 20, 2018 1:30:04 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Detecting and blocking microphone usage
Hi guys,
I'm trying to find a way to implement a security kernel driver (or, if not
possible, a user-mode solution) for microphone usage.
I'd like to be able to do the following:
1. Block selective applications from accessing the microphone.
2. If not possible, block all applications from using the microphone.
3. If not possible, notify the user when the microphone is being used.
Can you please shed some light on what possibilities I have?
