How to fix microphone not working on Mac

Complete guide with multiple methods and troubleshooting

7-10 min read
Expert Verified
Last Updated: August 2025

Quick Answer

To fix a microphone not working on a Mac, first check the system preferences for microphone settings and permissions. If the issue persists, troubleshoot hardware connections and software settings.

Medium⏱ 7-10 min read

Prerequisites & Requirements

Before attempting to fix microphone issues on your Mac, ensure you have the following:
  • •macOS version 10.12 (Sierra) or later for compatibility with most troubleshooting steps.
  • •Administrator access to change system settings.
  • •A working microphone (internal or external) to test functionality.
  • •Backup important data to avoid loss during troubleshooting.

Method 1: Check System Preferences

This method is used primarily to verify microphone settings and permissions.
  • •Step 1: Click on the Apple menu in the top-left corner of your screen and select 'System Preferences'.
  • •Step 2: Click on 'Sound' and then navigate to the 'Input' tab. Ensure your microphone is selected and the input volume is adjusted appropriately.
  • •Step 3: Speak into the microphone; you should see the input level meter respond. If it does, the microphone is working.
  • •Step 4: If the microphone is not responding, check the 'Security & Privacy' settings. Go to 'System Preferences' > 'Security & Privacy' > 'Privacy' tab > 'Microphone' and ensure that the applications you want to use the microphone with are checked.

For macOS Monterey (12) and later

In Monterey and later, additional privacy settings may be present.
  • •Step 1: Go to 'System Preferences' > 'Privacy & Security'.
  • •Step 2: Click on 'Microphone' and ensure that the applications are allowed access.

For macOS Big Sur (11) and earlier

The process is similar but may not include the 'Privacy & Security' section.
  • •Step 1: Go to 'System Preferences' > 'Security & Privacy'.
  • •Step 2: Click on the 'Privacy' tab and then 'Microphone' to check application permissions.

Method 2: Reset NVRAM/PRAM

Resetting the NVRAM/PRAM can resolve hardware-related issues, including microphone problems.
  • •Step 1: Shut down your Mac.
  • •Step 2: Turn it on and immediately press and hold the Option + Command + P + R keys for about 20 seconds.
  • •Step 3: Release the keys after you hear the startup sound a second time or after the Apple logo appears and disappears twice.
  • •Step 4: Once your Mac restarts, check if the microphone is working.

Troubleshooting Common Issues

If the microphone still does not work, consider the following troubleshooting steps:
  • •Error: 'No input devices found' - Solution: Check if the microphone is properly connected or try a different USB port if using an external microphone.
  • •Issue: Microphone is muted - Fix: Ensure that the microphone is not muted in the 'Sound' settings or in the application you are using.
  • •Problem: Microphone works in one app but not another - Workaround: Check app-specific permissions in 'System Preferences' > 'Security & Privacy' > 'Microphone'.

Advanced Tips & Shortcuts

For power users, here are some additional tips and shortcuts:
  • •Keyboard shortcut: Command + Space - Opens Spotlight Search to quickly find 'System Preferences'.
  • •Command line: 'sudo killall coreaudiod' - This command restarts the audio service, which can resolve some audio issues.
  • •Hidden feature: Use 'Audio MIDI Setup' (found in Applications > Utilities) to configure audio input settings more precisely.

Common Mistakes to Avoid

Avoid these common pitfalls:

Expert Tips

Regularly check your microphone settings and permissions to avoid future issues.