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I'm using macOS Mojave and I want to use my camera and microphone to make a New Movie Recording in QuickTime Player. But when I try it gives me this error.

QuickTime Player is not authorized to access the microphone.

I looked in System Preferences but the list is empty, and there's no + plus button for me to add an app, and I can't drag apps into the list. I think maybe this came up once before and I clicked Don't Allow. Now I can't get this prompt to come up again. How can I reset permissions so that the prompt comes back?

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You need to use tccutil to manage the privacy database -- this involves opening the Terminal and using the command line! Here's how to do it for QuickTime Player:

tccutil reset Camera com.apple.QuickTimePlayerX
tccutil reset Microphone com.apple.QuickTimePlayerX

Other Applications

You might need to reset Camera or Microphone permissions for other apps too. If you know the bundle ID of the app you're trying to use, you can use this command:

tccutil reset Camera [com.WHATEVERBUNDLE.YOURAPPID]
tccutil reset Microphone [com.WHATEVERBUNDLE.YOURAPPID]

Examples for Common Applications

Safari

tccutil reset Camera com.apple.Safari
tccutil reset Microphone com.apple.Safari

Mozilla Firefox

tccutil reset Camera org.mozilla.firefox
tccutil reset Microphone org.mozilla.firefox

Google Chrome

tccutil reset Camera com.google.Chrome
tccutil reset Microphone com.google.Chrome

Slack

tccutil reset Camera com.tinyspeck.slackmacgap
tccutil reset Microphone com.tinyspeck.slackmacgap

The Nuclear Option

If you're running macOS Mojave (10.14) or if you just don't know the app bundle ID, then you'll need to reset Camera and Microphone permissions for all applications. This will remove any other apps that have been granted permission in the past, so you'll get prompted again by other apps.

tccutil reset Camera
tccutil reset Microphone

Once you've reset the camera and microphone permissions, you must quit your application before the change will take effect. Then you can restart your app and try using camera or microphone again, and the prompt should reappear.

Help, it's still not working!

Make sure that System Integrity Protection is enabled, otherwise these commands won't work correctly. To check, you can run csrutil status and it should say System Integrity Protection status: enabled.

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  • Here is a full list of known services that tccutil can reset. – Nic Mar 14 '20 at 1:48
  • I heard from one person that they got tccutil: No such bundle identifier when trying to reset camera permissions for Slack, and had to use the nuclear option instead. – Nic Mar 26 '20 at 2:30
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    what if it still doesn't prompt after the nuclear option? the app is skype for business. – user50473 Apr 21 '20 at 9:53
  • If this doesn't work, try dragging ~/Library/Application\ Support/com.apple.TCC to the trash bin and reboot. All of these steps, plus that one, worked for me. – Graham P Heath Aug 6 '20 at 16:53

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