Why is my microphone not picking up any sound?

Most often the mic is muted, blocked by a privacy setting, or a different input device is selected. Check those three first, in that order. Together they explain most dead mics.

How do I unblock my microphone in Chrome?

Click the icon left of the address bar, open Site settings and set Microphone to Allow, then reload the page. To see every site you blocked, open chrome://settings/content/microphone.

Why does my mic work in one app but not another?

Each app picks its own input device and needs its own permission. Open the app's audio settings and choose the same mic that works elsewhere. Also check that the OS lets that app use the microphone.

Can a microphone be broken without any sign?

Yes. A damaged cable or capsule can give total silence or a weak, crackly signal. Test the mic on a second computer or phone. If it fails there too, the mic itself is the problem.

Why is my mic so quiet?

The input volume is too low, you are too far from the mic, or the wrong mic is selected (for example the laptop mic instead of your headset). Raise the input level in your system sound settings and move to about a hand's width from a headset mic.

Microphone Not Working? A Step-by-Step Fix

By The Microphone Test team at 1000 Ventures Last reviewed 2026-10-11

Most dead microphones come down to one of three things: the mic is muted, a privacy setting blocks it, or the computer is listening to a different mic. Work through the steps below in order. Most people are fixed by step four.

Before you start, run the microphone test once. Its verdict tells you which section to jump to, and you can re-run it after each step to see whether the fix worked.

1. Check the obvious things first

These take a minute, and they solve more problems than any driver update.

Mute switch. Many headsets have a mute button on the cable or a flip-up boom that mutes when raised. Some USB mics have a mute button that glows red.
Mute key. Laptops often have a mic mute key, usually on F4, F8 or F10, with a small light.
Connection. Unplug and replug the mic. For a 3.5 mm headset, make sure it goes into the right jack. A single combo jack needs a plug with four rings (TRRS); a plug with three rings (TRS) carries no mic signal.
Bluetooth. Wireless earbuds sometimes connect for music only. Remove the pairing and pair again, then pick the hands-free or headset entry as the input.

2. Allow the microphone in your browser and system

If the test says access is blocked, something said no. There are two gates, and both must be open: your browser's permission for the site, and your operating system's permission for the browser.

In the browser

Chrome and Edge: click the icon left of the address bar, set Microphone to Allow, and reload. You can also open chrome://settings/content/microphone (or edge://settings/content/microphone) and remove the site from the blocked list.
Firefox: click the permissions icon left of the address bar and clear the blocked microphone, then reload.
Safari on Mac: open Safari, Settings, Websites, Microphone, and set this site to Allow or Ask.
Safari on iPhone and iPad: open the Settings app, find Safari (under Apps on recent iOS versions), tap Microphone, and choose Ask or Allow.
Chrome on Android: tap the icon left of the address, then Permissions, and allow the microphone.

In the operating system

Windows 11: Settings, Privacy and security, Microphone. Turn on Microphone access, Let apps access your microphone, and Let desktop apps access your microphone. Our Windows 11 mic guide has the details.
macOS: System Settings, Privacy and Security, Microphone. Switch your browser on and restart it. See the Mac mic guide.
iPhone and Android: in the system settings, find your browser app and allow the microphone.

3. Pick the right microphone

Computers often have three or four inputs: a built-in mic, a webcam mic, a headset and maybe a virtual device from software like a voice changer or a meeting app. The browser and each app can use a different one.

In the test, open the Microphone list and try each entry while you talk. When the meter moves, you have found the right one. Then set that mic as the default in your system sound settings, so apps pick it too.

4. The mic is found but sends silence

If the test sees your mic but reports pure silence, the signal is muted somewhere before it reaches the browser.

System input volume. Check that the input volume is not at zero and not muted. On Windows it is in Settings, System, Sound, under Input. On a Mac it is in System Settings, Sound, Input.
Hardware mute. Some mute switches cut the signal completely, so the device still appears but sends zeros. Check every switch again.
Exclusive mode. On Windows, an app can take exclusive control of a device. Close other audio apps, or in Control Panel, Sound, Recording, open the mic's Properties, Advanced, and untick the exclusive mode boxes.

5. The mic works but is too quiet

If your voice barely moves the meter, raise the input level and close the distance.

Set the system input volume to about 70 to 80 percent, then fine-tune with the test.
Keep a headset mic about two fingers from the corner of your mouth. Keep a desk mic within about a hand's width to a forearm's length.
Many USB and XLR mics have a gain knob. Turn it up until your loudest words reach the amber zone.
Some mics pick up from the side, not the top. Check which side the maker marks as the front.

6. The mic is distorted or too loud

Crackle on loud words means the signal clips: it reaches 0 dB and the top gets cut off. Lower the input volume or the gain knob until your loudest words peak around -6 dB. Moving a little further back helps too. If the distortion stays even at low levels, the cable or the mic itself may be damaged.

7. Too much background noise

When the background sits close to your voice, the fix is to make your voice louder relative to the room, not just louder overall.

Get closer to the mic and lower the gain. Your voice stays the same, and the room drops.
Switch off fans, close windows and move away from the computer if its fans are loud.
Use a headset mic or a directional mic pointed at your mouth.
Turn on noise suppression in your call app. In the test, tick Call-style processing to hear what it does.

8. The mic is not detected at all

If the test says no microphone was found, the system does not see the device.

Try a different USB port, ideally directly on the computer, not a hub or dock.
Restart the computer. It clears stuck audio services more often than you would think.
On Windows, open Device Manager and look under Audio inputs and outputs. Update or reinstall the driver if the mic shows a warning.
On a Mac, check that the mic appears in System Settings, Sound, Input.
Test the mic on another computer or phone. If it fails there too, the mic or cable is faulty.

9. The mic works here but not in one app

If our test hears you but Discord, Zoom or Teams does not, the problem is inside that app. Each app has its own input setting and its own mute. Our guide to the mic test in Discord, Zoom and Teams shows where each one hides.

Sources

Microsoft Support: Fix microphone problems
Apple Support: Control access to the microphone on Mac
Google Chrome Help: Use your camera and microphone in Chrome

Want to know right now whether your mic picks you up? The free test shows your live level and gives a verdict in a few seconds.

Open the microphone test