Mic Not Working in Windows 11? Here's How to Fix It

You join a call, start talking, and nobody hears you. A dead microphone in Windows 11 almost always comes down to one of a handful of causes — and most of them are settings, not broken hardware. Work through the fixes below in order; they’re sorted from most to least common.

First, find out what’s actually broken

Before changing any settings, run a quick microphone test in your browser. It shows a live volume meter, so you get an immediate yes/no answer:

• The meter moves when you speak → your mic and Windows are fine. The problem is inside the app that can’t hear you (its input device selection, or its permission).
• The meter stays flat → the problem is at the Windows level. Keep reading.

This one check saves you from reinstalling drivers when the real issue was a dropdown in Zoom.

Check Windows microphone privacy settings

Windows 11 can block microphone access system-wide or per app, and an update or an overzealous privacy tweak can switch it off without you noticing.

1. Open Settings → Privacy & security → Microphone.
2. Make sure Microphone access is On.
3. Make sure Let apps access your microphone is On.
4. Scroll the app list and check the toggle for the app that can’t hear you. Desktop programs (Zoom, OBS, older apps) are governed by Let desktop apps access your microphone at the bottom — check that too.

Select the right input device

If your PC has ever had more than one microphone connected — a webcam, a headset, earbuds, a capture card — Windows may be listening to the wrong one.

1. Open Settings → System → Sound.
2. Under Input, select the microphone you actually want to use.
3. Speak and watch the input volume bar under the device name. If it moves here but an app still can’t hear you, the app has its own device picker set to something else.

A classic symptom of the wrong device being selected: people say you sound quiet and far away, because the webcam mic across the desk is picking you up instead of the headset next to your mouth.

Raise the input volume

While you’re in Settings → System → Sound → Input, click your microphone and check the Input volume slider. It can end up at or near zero — some apps “helpfully” auto-adjust it. Set it to 80–100% and test again.

Look for a hardware mute

Easy to overlook, and very common with headsets:

• Many headsets have a mute switch on the cable or an earcup button, and some mute when you flip the boom arm up.
• Many laptops have a mic-mute function key (often F4) with a small LED. If the LED is lit, the mic is muted at hardware level and no Windows setting will help.

Bluetooth headsets: check the profile

Bluetooth headphones expose two modes to Windows: high-quality stereo (playback only) and hands-free (playback + microphone). If apps show your headset’s mic but no sound arrives, Windows may be stuck on the stereo profile.

In Settings → System → Sound → Input, make sure the hands-free entry of your headset is the selected input. If it doesn’t appear at all, remove the device under Bluetooth & devices and pair it again.

Close apps that hog the microphone

Some applications take exclusive control of the mic. If the mic works in one app but not another, close everything that might be holding it (voice assistants, other conferencing apps left running in the tray, streaming software) and try again.

To stop this happening in future: Settings → System → Sound, click your microphone, open Advanced properties, and untick Allow applications to take exclusive control of this device.

Update or reinstall the audio driver

If the mic is missing entirely from the Sound settings, or nothing above helped:

1. Right-click Start → Device Manager.
2. Expand Audio inputs and outputs, right-click your microphone → Update driver → Search automatically.
3. If that changes nothing, right-click → Uninstall device, then restart the PC. Windows reinstalls a fresh driver on boot.
4. For laptops, also check the manufacturer’s support page — Realtek audio drivers from the vendor often behave better than the generic ones.

Run the audio troubleshooter

Windows 11 has a decent automated check: Settings → System → Troubleshoot → Other troubleshooters → Recording Audio → Run. It catches disabled devices, zeroed volumes and service problems.

Still silent?

At this point the settings are exhausted and it’s time to suspect hardware:

• USB or jack mic: try a different USB port (avoid hubs), or the jack on the other side / back of the PC.
• Combo jacks: many laptops have a single 3.5mm jack that expects a 4-pole (TRRS) plug. A mic with separate pink/green plugs needs a splitter adapter.
• Test the mic on another device — a phone or another computer. If it’s dead there too, the microphone itself has failed.

Once you’ve applied a fix, re-run the mic test — if the meter moves and the playback sounds clean, you’re set for your next call.