Headset Microphone Not Working on Windows: The Complete Fix

Published 2026 - 4 min read

Most headset mics that stop working are a jack mismatch, a privacy setting or the wrong default input device - not a dead microphone.

1. Check the jack and connector

A single 3.5mm port needs a four-pole (TRRS) headset. If your PC has separate mic and headphone jacks, use the adapter that splits them. Plug firmly into the correct (pink or mic) port.

2. Allow apps to use the mic

Open Settings > Privacy & security > Microphone and confirm "Let apps access your microphone" and "Let desktop apps access your microphone" are on.

3. Pick the right input device

Go to Settings > System > Sound > Input and select your headset microphone. Speak and watch the level meter; if it stays flat, the wrong device is selected.

4. Unmute and raise levels

Open Sound settings > Input > Properties, make sure it is not muted, and set the level slider to 80-100. Check any physical mute switch on the headset or cable.

5. Driver and troubleshooter

Run Settings > System > Troubleshoot > Other troubleshooters > Audio. Then in Device Manager update the audio driver (Realtek/Intel), or uninstall and scan for hardware changes.

6. USB and Bluetooth headsets

For USB headsets try another port and disable USB power saving (see the USB guide). For Bluetooth, reconnect in Bluetooth settings and, if the mic sounds garbled, check the device is using the headset (not hands-free) profile.

Hardware note: Test the headset on a phone with a mic jack to rule out a dead microphone before buying a replacement.