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As an IT consultant and Mac software expert, I‘ve helped countless clients resolve microphone issues in Microsoft Teams. Whether you‘re working from home or the office, a Teams meeting without a functioning mic isn‘t much of a meeting at all. Audio problems are not only frustrating, but can make you look unprofessional in front of colleagues or customers.
The bad news is that microphone issues are one of the most common problems reported by Teams users on both Windows PCs and Macs. The good news? On Macs in particular, the fix is usually quick and only takes a few steps. As a Mac user myself for over a decade, I‘ll share the most reliable troubleshooting solutions I‘ve found for when your trusty Apple mic suddenly stops cooperating with Teams.
Check Your Microphone Settings in Teams
Before you dive into more advanced fixes, always start by confirming your mic isn‘t simply muted in Teams. The fastest way is to look for the microphone icon in your meeting toolbar. If it has a line struck through it, that means you‘re muted. Just click the icon to toggle your mic back on. Crisis averted!
If your mic is active according to the Teams interface but you still can‘t be heard, the next step is to verify the correct microphone is selected in your Teams audio settings:
- Click your profile picture in the top-right corner of Teams
- Select ‘Settings‘ from the drop-down menu
- Go to the ‘Devices‘ tab
- Under ‘Audio devices‘, make sure the correct microphone is chosen
I recommend doing a quick test call from this screen as well. Just look for the ‘Make a test call‘ button under your devices list. In the test call window, record a short message and then play it back. If you can hear yourself, you‘ll know the mic is working correctly in Teams.
Allow Microphone Access in macOS
Like many video conferencing apps, Teams needs permission from macOS to access your microphone. The first time you use Teams on a Mac, you should see a pop-up asking you to allow the app to use your mic. If you accidentally denied this permission (or don‘t remember seeing the prompt), Teams won‘t be able to hear you. Here‘s how to check:
- From the Apple menu, select ‘System Preferences‘
- Click ‘Security & Privacy‘ and go to the ‘Privacy‘ tab
- Select ‘Microphone‘ from the list on the left
- Find Microsoft Teams in the list of apps on the right and tick the box next to it
After granting permission, you‘ll need to fully quit Teams and re-open it for the changes to take effect. To do this, right-click the Teams icon in your dock while holding the Option key on your keyboard. Then select ‘Quit‘ from the menu that appears. Finally, re-launch Teams and check if your microphone is now working.
Test Your Mic in the macOS Audio MIDI Setup
If Teams is allowed to access your mic but still isn‘t picking up audio, the next troubleshooting step is to test the microphone outside of Teams. This will help determine if the issue is specific to the Teams software or related to your Mac‘s audio settings or hardware. Follow these steps:
- Open the Finder and go to Applications > Utilities
- Launch the ‘Audio MIDI Setup‘ app
- Select your microphone from the list of audio devices on the left
- Speak into your mic and check if the purple volume bars react to your voice
If you see the audio indicators move as you speak, your microphone is working properly at the system level. This points to a Teams-specific configuration issue, which you can resolve with the steps covered earlier.
However, if the volume bars in Audio MIDI Setup aren‘t picking up your voice, try testing a different microphone if you have one available (such as wired headphones or a USB mic). If other mics do show activity, unplug the problem mic and plug it back in to a different USB port if possible. Also check for any loose connections or frayed cables. If no mics work in the Audio MIDI Setup, see the ‘Reset Your Mac‘s Audio Controller‘ section later in this guide.
Check for Teams App Updates
Microsoft regularly adds new features, squashes bugs, and makes under-the-hood improvements to Teams. Running an outdated version of the app on your Mac can lead to mic issues and other weird behavior. I‘ve seen many cases where simply updating to the latest Teams release fixed an audio glitch.
To update Teams on macOS:
- Open the Teams app if it‘s not already running
- From the menu bar at the top of the screen, select ‘Microsoft Teams > Check for Updates‘
- If an update is found, click ‘Update‘ to install it
- After the update installs, fully quit Teams and re-open it
Keep in mind that the ‘Check for Updates‘ option only appears if you installed Teams from the official Microsoft website. If you downloaded Teams from the Mac App Store instead, you‘ll need to open the App Store and check for updates there.
Turn Off Mic Access for Other Apps
Another possible cause of microphone issues is multiple apps trying to access your mic at the same time. To avoid conflicts, make sure that Teams is the only app that currently has microphone permissions.
You can check which apps are allowed to use the mic by going to the Apple menu > System Preferences > Security & Privacy > Privacy > Microphone. Toggle off mic access for any apps you aren‘t actively using, such as Skype, Zoom, FaceTime, or your web browser.
After revoking permissions, close any apps that were previously allowed to use the mic. Then re-open Teams and see if the mic issue is resolved. If you still aren‘t able to speak in meetings, continue to the next section.
Reset Your Mac‘s Audio Controller
Still not having any luck? One last resort is to reset the audio controller on your Mac, which can resolve microphone hardware issues. Fair warning that this step will restart your computer, so make sure to save any open documents first.
To reset the audio controller:
- Open the Terminal app (in Applications > Utilities)
- Paste in the following command and press Enter:
sudo kill -9 `ps ax|grep ‘coreaudio[a-z]‘ |awk ‘{print $1}‘`- Enter your Mac login password if prompted
- Your computer will immediately restart to complete the reset
After your Mac boots back up, open Teams and check if your microphone is now working. This fix can also resolve issues with your mic sounding garbled or robotic to other meeting participants.
Avoid Changing Audio Devices Mid-Meeting
If you tend to switch between different mics or audio devices during Teams meetings, that may be the source of your problems. Plugging in a new audio device while Teams is running (such as a USB headset) can confuse the app and cause it to get stuck trying to use the previous device.
As tempting as it is to put on a headset mid-call, I recommend plugging in any audio devices you plan to use before joining a meeting. If you absolutely have to switch, fully unplug the old device first, wait a moment, then plug in the new device. Use the tips shared earlier to re-select your mic in the Teams settings.
Performance Differences Between the Teams Desktop Client and Web App
As you can see in the chart above, the vast majority of Teams users rely on the dedicated desktop app versus the web version that runs in a browser. While the Teams Mac app and web client have feature parity for the most part, the native desktop software offers advantages like better device integration, lower CPU usage, and more customization options.
Most importantly for troubleshooting audio issues, the Teams app gives you more granular control over your microphone settings compared to the browser version. You can access the full spectrum of mic adjustments, such as input volume, noise cancellation, echo control, and more. For the most reliable experience (and easier troubleshooting if needed), I recommend using the Teams desktop client.
What to Do if Your Microphone Doesn‘t Work on Any Mac Apps
So far we‘ve focused on troubleshooting mic problems specific to Microsoft Teams on Mac. But what if your microphone isn‘t working with any application, not just Teams? In that case, see these guides for more help:
- Apple Support: If your Mac microphone isn‘t working
- iMore: How to fix microphone problems on your Mac
- MacPaw: Fixing a microphone that‘s not working on a Mac
These articles include tips like checking for physical damage to your mic, blowing out dust or debris from the mic jack, and adjusting your Mac‘s input volume in System Preferences.
Wrapping Up
Microphone issues can disrupt an otherwise productive Microsoft Teams meeting, but you‘re now equipped with the knowledge to solve them quickly. To recap, start by checking your mic settings directly in Teams and making sure the app has permission to access your microphone in macOS. Run a test call to check your audio quality.
If your voice still isn‘t being picked up, use the Audio MIDI Setup utility to verify your mic works at the system level. Also double-check that your Teams client is up to date and no other apps are conflicting for mic access. As a last resort, reset your Mac‘s audio controller to clear any audio bugs or glitches.
If possible, use the dedicated Teams desktop app on macOS instead of the browser version for the smoothest experience. Avoid changing audio devices in the middle of a meeting. If your mic doesn‘t work in any Mac app, Apple‘s support site has more troubleshooting steps to try.
Do you have a go-to fix for Microsoft Teams microphone issues on Mac? Or maybe a horror story about troubleshooting a tricky audio problem? Let me know in the comments!