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Microphone Troubleshooting Guide

Last reviewed · fixmic team

Your microphone isn't working — but you don't know why. This guide walks you through every common cause in the order most likely to fix it: hardware, OS permissions, app settings, drivers, and software conflicts. Each step takes under a minute.

Try this first

Unplug your microphone, restart your computer, plug it back in, and run the live test on the homepage. If the meter responds to your voice, the problem is in a specific app's settings — not the mic itself.

1. Check the hardware

Before touching software, rule out the obvious. A surprising share of 'broken mic' tickets come down to a cable or mute switch.

  1. Inspect the cable and connector

    Wiggle the plug at both ends while watching the level meter. Intermittent contact looks like sudden silence followed by a burst. Try a different USB port or a different 3.5 mm jack.

  2. Test on a second device

    Plug the microphone into a phone, tablet, or another computer. If it works there, the problem is on this computer. If it fails everywhere, the microphone is dead.

  3. Check the mute switch

    Many USB and XLR microphones have a physical mute button or LED. Headsets often have an inline mute switch on the cable. Verify nothing is muted.

2. Verify operating system permissions

Browsers, video apps, and conferencing tools all need explicit permission to access the microphone. Permission is granted per app and per site. For a deeper walkthrough see the Windows guide or Mac guide.

  1. Windows: Settings → Privacy & security → Microphone

    Confirm 'Microphone access' is on, 'Let apps access your microphone' is on, and 'Let desktop apps access your microphone' is on. Then enable the specific app you're using.

  2. macOS: System Settings → Privacy & Security → Microphone

    Toggle on every app that needs the mic. macOS requires you to quit (Cmd + Q) and reopen the app for the change to apply.

  3. Browser: site-information icon in the address bar

    Click the icon on the left of the URL (Chrome and Edge now use a tune/slider icon instead of the old padlock), find Microphone, and set it to Allow. A site that was once blocked stays blocked until you change it here.

3. Pick the right input device

Operating systems remember a default input, but it does not always match what you expect — especially after plugging in headphones or a webcam with a built-in mic.

  1. Open the system sound settings

    On Windows: Settings → System → Sound → Input. On macOS: System Settings → Sound → Input. Speak — only the bar of the currently active device will move.

  2. Match the device in your app

    Zoom, Meet, Teams, Discord, and OBS each have their own input picker that overrides the OS default. Set them all to the same device.

4. Update or roll back audio drivers

Audio drivers handle the conversion from electrical signal to digital sound. A stale or buggy driver is a common cause of 'mic shows up but does nothing'.

  1. Windows Device Manager

    Open Device Manager → Audio inputs and outputs. Right-click your mic → Update driver → Search automatically. If you started having problems after a recent update, choose 'Roll back driver' instead.

  2. macOS uses built-in drivers

    There is no separate driver to update. If the mic does not appear in System Settings, the issue is with the cable, the port, or the microphone itself — not a driver.

5. Close conflicting apps

Most operating systems let only one app use the microphone at a time. If a previous call did not release the device, the next app will silently fail.

  1. Quit every voice or video app

    Close Zoom, Teams, Meet, Discord, Skype, OBS, Audacity, and any browser tabs that requested mic access. Quit the apps fully — closing the window is not enough.

  2. Restart the audio service (Windows)

    Press Windows + R, type 'services.msc', press Enter. Find 'Windows Audio', right-click → Restart. This releases any stuck mic handle.

Still not working?

You have ruled out hardware, permissions, drivers, and conflicts. A few more things to check:

  • Reboot once more after all changes — some permission updates require a restart.
  • If you're on AirPods or any Bluetooth headset, the mic is fundamentally limited by the Bluetooth Classic protocol. See the dedicated AirPods/Bluetooth guide for the actual fix.
  • If the live test on the homepage shows a level but a specific app does not, the problem is in that app's settings. Use the app-specific guides below.

Related guides

Run the live test now

The diagnostic on the homepage tells you exactly which problem you have — clipping, noise, weak signal, or echo — in under 10 seconds.

Run the microphone test