Internal Microphone is not working anymore after upgrading to Big Sur

Hi, I have a Macbook Pro 13-inch, 2017 with Touch Bar and the internal microphone is not working anymore after upgrading to macOS Big Sur.


I think it might be a software issue since it was working for a few minutes but then stopped again. I don't get any microphone level directly in the system settings, so it is definitely no app permission issue.


Does anyone else experience this issue?

MacBook Pro with Touch Bar

Posted on Nov 25, 2020 1:19 AM

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2 replies

Dec 3, 2020 6:15 AM in response to mrhac

Hello mrhac,


Thank you for reaching out in Apple Support Communities. We understand the microphone on your Mac is no longer working, since the recent update of macOS Big Sur. We'll be happy to help.


If you haven't tried yet, we suggest to restart your Mac in safe mode. This helps to perform a basic check of your startup disk, deletes some system caches and more. Here's an article with more information and the proper steps to take: How to use safe mode on your Mac Once you're in safe mode, please restart your Mac as normal and see if you can use the microphone on your Mac without any issues.


In addition, you can reset the NVRAM (nonvolatile random-access memory). This helps to reset certain settings on your Mac that may help. Here's an article with additional details and the proper steps to take: Reset NVRAM or PRAM on your Mac


Please keep us posted with the results.


Kind regards.

Dec 10, 2020 4:48 AM in response to Jeff_W.

Hi Jeff,

Thank you so much for your reply! Unfortunately, it is not possible to test audio devices in safe mode since they are disabled. I started in safe mode and restarted it normal again. I also reset the NVRAM.


However, none of the actions really could link to solving the issue. It must be definitely a software bug, since my microphone is working fine at the moment. I test the input signal always in the system preferences and with voice memos to eliminate potential third-party software errors.


It is a really strange behavior that the mic on my Mac sometimes works completely fine and then it suddenly stops working. Since I have this problem since the Big Sur update, I would be curious if this is a general macOS bug that also affects other users.


Best, Mario

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Internal Microphone is not working anymore after upgrading to Big Sur

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