Please see this page for a solution. I can confirm it works for solving the issue with a c920 on Windows 11.
It says no audio device is installed when I plug in my c920 logitech camera
It says no audio device is installed when I plug in my c920 logitech camera. This just happened recently. They used to work well together before.
Windows for home | Windows 11 | Devices and drivers
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Anonymous
2023-11-02T18:37:31+00:00 -
Anonymous
2023-10-20T21:58:44+00:00 I found a solution to my Logitech Webcam on Elitedesk 800 G9. Same problem with Logitech Webcam C925-e, Windows 11, when connected, it disable my Sounds.
Before connecting Logitech Webcam, install LogiTune from Logitech, then test/update Realtek drivers properly. Connect Webcam, go to Sound Mixer, set everything to Realtek as default, Except Input device Microphone has to be set to Microphone (Logitech Webcam). Also under LogiTune in Sound Mixer, set the input device to Microphone (Logitech Webcam...). As long as this setting maintain, system is stable, Team or Zoom meeting works properly, no more freezes and sound issues. Good Luck.
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Anonymous
2023-07-19T04:03:02+00:00 On Step 5, try "Disable" it instead of Uninstall
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Anonymous
2023-07-12T22:20:16+00:00 Same. Please help. It just happened all of a sudden. Has worked fine for a couple of months and now it kills audio. None of these solutions are working for me either.
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Anonymous
2023-07-18T00:11:59+00:00 same problem