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 AmazonAs an Amazon Associate we earn from qualifying purchases.
USB-C Headset with Mic
A dedicated headset mic eliminates most background noise issues.
View on AmazonAs an Amazon Associate we earn from qualifying purchases.
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.
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