Fix Microphone Not Working in Windows (Zoom, Teams, Discord)

Published 2026-02-04 by TechNet New England

You join a call on Zoom, Teams, or Discord and nobody can hear you. Your microphone was working yesterday or works on your phone, but on your Windows PC it's completely silent. The most common cause is a Windows privacy setting that blocks apps from accessing your mic, and it takes about 30 seconds to fix.

Fix 1: Check Microphone Privacy Settings

Windows has a privacy setting that controls which apps can use your microphone. If this is turned off, no app will be able to hear you, even if the mic hardware is working perfectly.

1. Open Settings (press Win+I)
2. Go to Privacy & security > Microphone
3. Make sure "Microphone access" is turned On
4. Make sure "Let apps access your microphone" is turned On
5. Scroll down and make sure "Let desktop apps access your microphone" is turned On

That last setting is the one that catches most people. Zoom, Teams, Discord, and most communication apps are "desktop apps," and this toggle must be enabled for them to use the mic. This setting gets reset by Windows updates and privacy changes more often than you'd expect.

Fix 2: Check the Input Device in Sound Settings

Windows might be listening to the wrong microphone:

1. Go to Settings > System > Sound
2. Under "Input," check which device is selected
3. If you see multiple options, select the correct microphone
4. Speak into the mic and watch the volume bar next to the input device. If it moves, the mic is working at the system level

Fix 3: Check the Mic Settings Inside Your App

Each communication app has its own microphone setting that's separate from Windows:

• In Zoom: Click the arrow next to the Mute button > Audio Settings > Select the correct microphone
• In Teams: Click the three dots > Settings > Devices > Select the correct microphone
• In Discord: Go to User Settings (gear icon) > Voice & Video > Select the correct Input Device

Also check that the input volume in the app isn't turned all the way down.

Fix 4: Run the Windows Audio Troubleshooter

1. Go to Settings > System > Troubleshoot > Other troubleshooters
2. Find "Recording Audio" and click "Run"
3. Follow the prompts and let Windows attempt to detect and fix the issue

Fix 5: Check if the Mic Is Muted or Disabled in Sound Settings

1. Right-click the speaker icon in the system tray and select "Sound settings"
2. Scroll down and click "More sound settings"
3. Go to the "Recording" tab
4. Find your microphone. If it shows "Disabled," right-click it and select "Enable"
5. Right-click the mic again and select "Properties"
6. Go to the "Levels" tab and make sure the volume is turned up and the mic isn't muted (no red circle on the speaker icon)

Fix 6: Update or Reinstall Audio Drivers

If nothing else has worked:

1. Open Device Manager
2. Expand "Audio inputs and outputs"
3. Right-click your microphone and select "Update driver"
4. Select "Search automatically for drivers"

If that doesn't help, try uninstalling the microphone device, then restart your PC. Windows will reinstall the driver automatically on reboot.

If these steps don't resolve the issue, or if you'd like professional help, our team is here. Contact TechNet New England for IT support.