Mac Microphone Not Working? How to Fix It
No one can hear you on Zoom, Teams, or FaceTime? Fix Mac microphone issues with these step-by-step solutions for MacBook and iMac.
Common Mac Mic Problems
- No mic input detected: App shows no audio level
- Very low volume: Others can barely hear you
- Muffled or distorted: Audio quality is poor
- Works in some apps, not others: Permission issue
- Picks up background noise only: Mic stuck on wrong input
Fixes to Try
1 Check Microphone Permissions
Apps must be granted microphone access explicitly:
- Go to System Settings → Privacy & Security → Microphone
- Find the app (Zoom, Teams, FaceTime, Chrome, etc.)
- Toggle it ON
- Fully quit and reopen the app
2 Check Input Source Selection
Mac may be using the wrong microphone:
- Go to System Settings → Sound → Input
- Make sure "MacBook Microphone" or "Built-in Microphone" is selected
- Speak and watch the input level meter — it should move
- Adjust the Input Volume slider if it's too low
3 Check In-App Microphone Settings
Many apps have their own audio input settings:
- Zoom: Settings → Audio → Microphone → select built-in mic
- Teams: Settings → Devices → Microphone
- Google Meet: Settings (gear icon) → Audio
- Make sure the app isn't muted within its own settings
4 Reset Core Audio
Restarting the audio daemon often fixes mic issues:
- Open Terminal
- Run: sudo killall coreaudiod
- Enter your password if prompted
- Wait a few seconds for Core Audio to restart
- Test your microphone
5 Test Microphone in Voice Memos
Quickly verify if the hardware works:
- Open Voice Memos (search in Spotlight)
- Press the red record button
- Speak and play back — if you hear yourself, hardware is fine
- If no audio, the issue is likely hardware or a low-level driver problem
6 Check for macOS Updates
- Go to System Settings → General → Software Update
- Install any available updates
- Restart and test the microphone
7 Restart Your Mac
A full restart clears audio driver problems:
- Apple menu → Restart
- After reboot, test the mic in Voice Memos first
- Then test in your video call app
8 Boot in Safe Mode
Check if a third-party app is interfering:
Apple Silicon: Shut down → hold power → Shift + Continue in Safe Mode
Intel Mac: Restart → hold Shift until login screen
Test mic in Safe Mode. If it works, a third-party app is causing the issue.
Recommended Accessories
USB-C Microphone for Mac
If your built-in mic is failing, a USB-C condenser mic is a major upgrade for calls.
View on AmazonUSB-C Headset with Mic
A dedicated headset mic eliminates most background noise issues.
Still Not Working?
If the microphone doesn't work in Voice Memos or any app after trying all fixes, the built-in microphone hardware may be damaged and needs professional repair.
📞 Get Professional Help
Need Mac microphone repair? Contact PC Medics of New Jersey.
📦 Mail-In Repair Service
Not comfortable doing this yourself? Send your device to a professional repair shop.