How to mute your microphone in every app on Windows 11 and 10

Checked on 4 October 2026. Written by the maker of NotchPixel, so the free options come first and mine comes last.

The short answer

Windows 11's Win+Alt+K mutes your mic only in call apps that support it, and Microsoft Teams is the one Microsoft documents. To mute the microphone for every app at once, mute the device itself: in Sound settings, with a hardware mute key, or with a free tool such as SoundSwitch, which mutes the default microphone with Ctrl+Alt+M.

App mute or device mute

1. Win+Alt+K and the taskbar mute button (Windows 11, free)

During a call in a supported app, Windows 11 shows a microphone button in the taskbar. Click it, or press Win+Alt+K, to mute or unmute. Microsoft lists the key for Windows 11 only, as "Mute or unmute the microphone in supported apps".

The limit is in the last two words: each app has to add support. Microsoft documents it for Teams. I found no help page from Zoom, Discord, Slack or Google that says their app supports it (checked 4 October 2026). To test your app, press Win+Alt+K during a call. If Windows says "No supported apps in use for mic mute", that app is not supported.

2. The microphone icon in the taskbar (Windows 10 and 11)

On both versions, a microphone icon appears in the notification area of the taskbar while an app is using the mic. On Windows 11, hover over it to see which app. The icon tells you who is listening. It mutes only during a call in a supported app (section 1).

3. Mute the device in Windows (free, every app)

Windows 11: open Settings > System > Sound. Under Input, click the microphone button next to the Volume slider. Click it again to unmute.

Windows 10 and 11: the classic Sound control panel does the same.

  1. Press Win+R, type mmsys.cpl and press Enter.
  2. Open the Recording tab and double-click your microphone.
  3. On the Levels tab, click the speaker button next to the slider to mute it, then click OK.

Both work in every app but are slow to undo. To check, record a few seconds in Sound Recorder (Voice Recorder on Windows 10) and play it back. You should hear nothing.

The privacy switch (Settings > Privacy & security > Microphone) is not a mute. Microsoft says desktop apps "might still be able to access your camera or microphone even when these settings are turned off".

4. Each app's own mute key (free)

From each app's own help page, read on 4 October 2026. These are app mutes: each key works in one app only.
AppMute keyWorks when the app is not in front?
Microsoft TeamsCtrl+Shift+MOnly in the meeting window. On Windows 11, use Win+Alt+K.
ZoomAlt+AOnly if you tick the global option next to it in Settings > Keyboard Shortcuts.
Discord (desktop app)Ctrl+Shift+MYes, in the desktop app.
Google MeetCtrl+DNo. Meet runs in a browser tab, and a tab only gets key presses while it is in front.

5. Hardware mute keys and switches (free if you have one)

Many business laptops, including Lenovo ThinkPads and some Dell Latitude and Precision models, have a mic-mute key, often F4, with a light that shows when you are muted. USB microphones and headsets often have a mute button or a flip-up boom. On headsets certified for Microsoft Teams, the button stays in sync with Teams' own mute. Whether a key or button silences every app depends on the maker, so test it once with a short recording, as in section 3.

6. PowerToys Video Conference Mute is gone

PowerToys used to include Video Conference Mute: Win+Shift+A for the mic, Win+Shift+O for the camera and Win+Shift+Q for both. Version 0.88.0 removed it on 28 January 2025, and Microsoft gave low usage and similar features already in Windows as the reasons. It is not in the current release (0.101, 25 August 2026), and the request for a new mute shortcut on GitHub is still open. Older guides and some AI answers still recommend it.

7. Free tools that mute the device with one key

All three are open source.

SoundSwitch

Version 7.3.3, 1 September 2026. GPL-3.0. Windows 10 or later, x64 or ARM64.

Ctrl+Alt+M mutes the default microphone, and a banner stays on screen until you unmute. SoundSwitch on GitHub.

MicMute

By Saif Aqqad. Version 1.3.4, 19 November 2025. Unlicense.

Toggle, push-to-talk or push-to-mute keys, several microphones at once, an always-on-top overlay and profiles linked to apps. MicMute on GitHub.

silence!

Version 2.3.3, 29 September 2026. Apache-2.0. Windows 10 or 11.

Mutes one microphone or every active one from a keyboard, mouse or gamepad, with tray icons, sounds and an on-screen overlay. silence! on GitHub.

If one key that mutes every app is all you want, one of these is enough.

Mute indicator and call timer

A device mute is easy to forget, so it helps to see it. The taskbar microphone icon in section 2 shows that an app is using the mic; for a device mute, these show that you are muted:

None of the free tools above describes a call timer. NotchPixel, below, shows both: a mute readout and how long the call has run.

8. NotchPixel: Ctrl+Alt+M with a call timer (paid)

I'm the developer of NotchPixel, so read this section with that in mind.

What the mute key does

Ctrl+Alt+M mutes your default communications microphone at the Windows level, and every other active microphone with it, so every app gets silence: Teams, Zoom, a browser call, Discord, a game. Press it again and it unmutes only the microphones it muted; one you had muted yourself stays muted. A readout at the top centre of the screen says "Microphone muted" or "Microphone on", also when another app or a hardware key changes the mute.

While an app is using the mic, the notch shows a call timer with a microphone you can click and the word "muted" or "live". Recorders and voice tools that hold the mic all day, such as OBS, Streamlabs, Voicemeeter, NVIDIA Broadcast and Game Bar, do not start the timer.

It does not turn off your camera, and because it mutes the device, recordings and streams go quiet too. If another app already holds Ctrl+Alt+M (SoundSwitch uses the same default), NotchPixel tries Ctrl+Alt+Shift+M and tells you which key it got. You can set any key in Settings > Hotkeys.

The mute key is one part of a notch at the top centre of the screen, for Windows 10 (version 2004 and later) and Windows 11, x64 only. Rest the pointer on it and it opens a card; move away and it is gone. The card also holds now playing, clipboard history and a shelf that sends files to your phone on the same Wi-Fi. It uses about 13 MB in Task Manager and 0% CPU at idle (version 0.5.64, 3 October 2026; how it was measured).

It is $9.99 once in the US (local prices elsewhere), with no subscription, no account, no telemetry and no ads. It is sold only on the Microsoft Store. On an ARM laptop, or if your employer blocks the Store, use one of the free options above.

Get NotchPixel

$9.99 once. No subscription, no account.

US price; the Store shows the price for your country. The Microsoft Store installs and updates it.

Get NotchPixel from the Microsoft Store

Questions

Does Win+Alt+K work on Windows 10?

No. Microsoft lists it for Windows 11 only. On Windows 10, mute the device in the Sound control panel or use a free tool.

Why does Win+Alt+K say "No supported apps in use for mic mute"?

The app using your mic has not added support for Windows 11's call mute. Use the app's own mute key, or mute the device.

What does Win+Alt+M do?

It turns the microphone on or off in an Xbox Game Bar recording. It is not a call mute.

If Windows mutes my mic, will Teams or Zoom show me as muted?

Not necessarily. The app may still show you as live while people hear silence. And unmuting the device does not unmute an app you muted inside the app.

What happened to PowerToys Video Conference Mute?

Microsoft removed it in PowerToys 0.88.0 (28 January 2025). It is not in the current release.

Can one key mute my microphone and my camera?

None of the tools in this guide does both. For the camera, use its shutter or privacy switch, or the camera button in your call app.

Looking for a notch app rather than a mute key? The notch apps for Windows comparison lists the free ones first.

Where the facts come from

Written by the maker of NotchPixel, 4 October 2026.

If anything here is wrong or out of date, email info@notchpixel.com and I will correct it.