Microphone Not Working on Windows 11? How to Fix It
On Windows 11, a microphone that captures nothing is far more often a blocked privacy permission than a dead capsule. Windows added strict per-app microphone gates that silently starve apps of input. Work through permissions first, then the input device and levels, then drivers — and use a neutral mic test to prove whether the hardware itself is alive.
Step 1 — Prove whether the hardware works at all
Start neutral, outside any specific app. Open the online mic test, allow browser access when prompted, and speak. If the meter moves, your microphone and drivers are fundamentally fine and the problem is a per-app setting — jump to the app permissions below. If the meter stays flat here too, the fault is lower down: permissions, device selection, or drivers. This split tells you which half of the guide to read.
Run the check now: open the mic test and speak. Meter moves = hardware is fine, fix the app. Meter flat = keep reading from Step 2.
Step 2 — Microphone privacy permissions (the #1 cause)
This is the number-one reason mics "break" on Windows 11, and it hides in plain sight. Go to Settings → Privacy & security → Microphone and check three separate switches, top to bottom — all three must be on:
- Microphone access — the master toggle for the whole device. If this is off, nothing gets in.
- Let apps access your microphone — a second gate specifically for installed apps.
- Let desktop apps access your microphone — the one people miss. Classic desktop programs (OBS, older games, some conferencing apps) sit under a separate list at the bottom. If this is off, Store apps work but your desktop app is silent.
Scroll the per-app list and confirm the specific app you're troubleshooting has its individual toggle on. Microsoft documents this list on their microphone permissions support page.
Step 3 — The right input device and levels
Windows often picks the wrong microphone — a webcam mic, a monitor mic, or a disconnected headset — and leaves it as the default:
- Go to
Settings → System → Sound → Inputand select the microphone you actually want. Speak and watch the Test your microphone bar move. - Click into that device's page and check the Input volume slider isn't near zero. A mic sitting at 2% reads as "not working" even though it's captured faintly.
- If your mic supports Microphone Boost, open the old panel:
Control Panel → Sound → Recording → (your mic) → Properties → Levels. Nudge the mic level up and add a little boost for a quiet capsule — but too much boost adds hiss, so raise it gradually.
Step 4 — Physical mute switches and mute keys
Before blaming software, check the hardware you can touch. Many gaming headsets mute when you flip the boom mic up, and USB mics and headset inline remotes have a physical mute button that's easy to knock. A muted-at-the-hardware mic produces a perfectly flat meter and no error message — exactly like a driver fault — so rule it out early.
Step 5 — Reinstall the driver
If the meter is still flat with permissions on and the right device selected, refresh the driver. Open Device Manager → Audio inputs and outputs, right-click your microphone → Uninstall device, then reboot — Windows reinstalls a clean driver automatically. This clears a corrupted driver state that a normal restart won't. If the mic vanishes from the list entirely when plugged in, try a different USB port or cable first; a dead port mimics a dead mic.
Step 6 — Exclusive Mode conflicts
Windows lets an app take exclusive control of a microphone, locking every other app out. If one program (a DAW, a game, a voice assistant) grabbed the mic exclusively, others get silence. In Control Panel → Sound → Recording → (your mic) → Properties → Advanced, untick Allow applications to take exclusive control of this device. This also cures sample-rate fights where two apps demand different formats and one loses.
The mic works, but one app is silent
Here's the common finishing move: the mic test and Windows both show the mic working, yet Zoom, Teams, or a game hears nothing. That's the app picking the wrong input device internally — it has its own device dropdown, separate from Windows. Open that app's audio settings and explicitly select your microphone by name instead of leaving it on "Default" or "Same as System." Apps cache a device that was default weeks ago and never update it. For the Discord-specific version of this, see the Discord mic guide.
| Symptom | Most likely cause |
|---|---|
| Flat meter in the neutral mic test too | Permission, wrong device, driver, or physical mute |
| Mic test works, Store apps don't | "Let apps access your microphone" is off |
| Mic test works, desktop app doesn't | "Let desktop apps access…" is off |
| Works in one app but not another | The app has the wrong input device selected |
| Only one app at a time can use it | Exclusive Mode is enabled |
When to stop and replace it
If the mic test meter stays flat across every permission, device, port, and a fresh driver — and a second microphone works fine in the same ports — the capsule or its cable has failed. USB mics and headsets are rarely worth repairing at the capsule level; swap the unit. For a built-in laptop mic that's dead after all of the above, it's a hardware service call, but you'll have ruled out every free fix first.