MacBooks have a built-in microphone that allows users to hold Zoom meetings, talk to their friends and loved ones, and even record the screen while discussing what they see in the background. This feature is so common that everyone is taking it for granted, right up until the moment this microphone suddenly stops working.
Despite its reputation, Mac can encounter a lot of issues. Some of them are related to the lack of basic system cleanups; others, like the ones with MacBook microphone not working, run deeper, and that’s where your direct involvement will be needed. Find out how to fix microphone issues on your Mac by following simple steps; there is no need to be an expert or look for tech professionals to help you, not at this stage. If the most common solutions don’t solve your Zoom audio problem, try the guide below. It has more tips for you to try.
Five Ways to Microphone Troubleshooting macOS
There are five ways to check what’s wrong with your Mac microphone and get rid of the problem. We’ll list them in the order of their relevance.
Check Microphone Permissions
In many cases, even if Zoom was working properly before, it might lose permission to use your Mac’s microphone. It might be a glitch, or you might have accidentally refused to give the app access: either way, here is what you’ll need to check.
● Open your system settings and find the Privacy & Security section there. Click on it.
● Scroll down a bit, and you’ll see the Microphone. The list of apps that requested access to it will be displayed there.
● Check if the program you need holds the permission there; it can be Zoom, Teams, etc. If the access is not enabled, click on the toggle.
● If Zoom is not there under the Microphone settings at all, try to remove and then reinstall it. This should trigger a new permission request.
If the problem concerns permissions, you’ll definitely fix it by following these tips.
Verify Input Device Settings
Your permissions can all be intact, but macOS might be listening to the wrong device. For example, if you’ve ever connected your headphones or earbuds to it, the system might automatically seek them out. This is how to fix Mac audio input:
● Go to your system settings and select the Sound category from there. After this, click the Input tab.
● See the list of all available devices: MacBook Microphone and AirPods should be there.
● If you want to use the built-in mic, click on MacBook Microphone; speak and see whether the input level meter registers your voice.
● If the meter doesn’t show any fluctuations, try to connect to another input device and check whether the problem is localized.
You might not solve everything at this point, but at least you’ll learn if the problem is with your mic, Zoom, or the sound in general.
Test with External Microphone
Next, move on to the hardware fixes. Check if the sound works by testing an external microphone. Even AirPods will suffice, although the USB mic will be even better. Plug it in, and do the following:
● Go to the settings and Sound again; choose Input and select your new mic from the list of options.
● Speak into this external mic and see whether it registers your voice levels. If it doesn’t work, then the problem is software-related.
● If the external mic works properly and you can see your voice levels and hear yourself well, then the issue lies with the built-in devices.
This solution is great at helping you determine whether the problem lies with software or hardware.
Restart the Core Audio Daemon
Audio input and output on Mac work with the help of the background process called coreaudiod. If this process crashes, then your microphone will stop working; you’ll also start experiencing other audio glitches. Fortunately, the solution is straightforward: you just need to restart your audio daemon. This will get macOS to reload all audio services it provides.
● Open Applications and go to the Terminal. After this, choose Utilities, and you’ll see an empty tab.
● Copy the following command: “sudo killall coreaudiod” without quotation marks, and press Enter to insert it into the tab.
● Enter your admin password if you have it; otherwise, Mac won’t be able to let you in since these are sensitive settings.
● The process will start automatically after your confirmation; once everything is refreshed, try your microphone again.
The biggest problem with the core audio daemon is that few people know of its existence. Since this is the case, they have no idea where the issue lies, so they can’t even begin to solve it.
Reset Your PRAM and SMC
If your Mac microphone glitches keep occurring, the problem might lie in the low-level system settings stored in PRAM (Parameter RAM) or managed by the SMC (System Management Controller). Does it sound complicated? Don’t worry; all you need to do is reset them.
● Shut down your Mac completely and properly: use the Apple menu and choose Shut Down.
● Wait for your screen to go fully dark, wait for about 5 seconds, and press the power button.
● Once you do, hold down the combination of Option + Command + P + R together: do it immediately.
● Keep holding these keys for about 20 seconds; the Apple icon might flicker a couple of times in this process.
Release the keys, and let your Mac continue as it normally does. This will clear out your old settings, so try your microphone after this; chances are, it will start working.
Enjoy Clear Sound on Your MacBook
You’ve learned how to troubleshoot your macOS microphone issues, so you can proceed with full confidence now. This problem can be urgent, yes, but don’t worry: at least some of the tips we’ve shared should work for your Zoom app.
If they don’t, you can try updating your macOS and Zoom or any other apps that are giving you trouble. Creating a new macOS profile might also help, as your current one could have become corrupted. If everything fails, you should consider asking for professional help, but most likely, it won’t be necessary. In the vast majority of cases, Mac microphone glitches are solved the way we’ve described.
Note: Some images in this article may be AI-generated.
If the problem persists, our NYC Mac repair technicians can diagnose it in person.
