After updating to macOS Sequoia 15.4, the microphone in the FaceTime app stopped working. No one can hear me anymore, and the waveform that shows the voice volume remains flat. All other apps are working fine. What could be the problem? Thank you for your response
MacBook Pro 14″, macOS 15.4
Hello,
when I contacted Apple Support, I was advised to create a test user with admin rights, then log in and check whether the problem still exists. The problem does not occur with the test user. I then logged in again with the normal user and the problem reappeared.
However, I have seen under Settings that there are other audio drivers than the Macbook microphone and the iPhone microphone that could be the cause of the problem. I opened the directory /Library/Audio/Plug-Ins/HAL/ in the Finder and deleted all subdirectories and contents. After restarting the Macbook, Facetime audio from the Macbook via the iPhone works perfectly again and the microphone in the Macbook does not cause any problems. The other party can hear me again.
I hope you can solve the problem just like I did.
Hello,
when I contacted Apple Support, I was advised to create a test user with admin rights, then log in and check whether the problem still exists. The problem does not occur with the test user. I then logged in again with the normal user and the problem reappeared.
However, I have seen under Settings that there are other audio drivers than the Macbook microphone and the iPhone microphone that could be the cause of the problem. I opened the directory /Library/Audio/Plug-Ins/HAL/ in the Finder and deleted all subdirectories and contents. After restarting the Macbook, Facetime audio from the Macbook via the iPhone works perfectly again and the microphone in the Macbook does not cause any problems. The other party can hear me again.
I hope you can solve the problem just like I did.
WhatsApp could be the reason why the microphone for FaceTime doesn't work. If you uninstall WhatsApp from the Macbook M1 and delete all content in the /Library/Audio/Plug-Ins/HAL/ directory, it may still not work. Then you would have to reinstall MacOS 15.4 over it. Simply shut down the Macbook, hold the power button when switching on until the start options are displayed and then reinstall 15.4 on the existing SSD. The programs and settings will all be retained. The process took me about 45 minutes (depending on the bandwidth of the internet access).
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Microphone in FaceTime stopped working after updating to Sequoia 15.4
