How to Mute Your Microphone on Windows 10 With a Keyboard Shortcut

Windows 10 does not have a documented built-in keyboard shortcut that globally mutes every microphone. If the app you are using has its own mute shortcut, that is the simplest option. For example, Microsoft Teams uses Ctrl+Shift+M to toggle the microphone during a meeting. If you want one shortcut that mutes a Windows 10 recording device for any app using that device, you can create one with AutoHotkey v2.

Do not rely on Windows+Alt+K as a Windows 10-wide solution. Microsoft lists that combination for muting the microphone in supported apps in its current Windows shortcut documentation, but the Windows 10-specific shortcut list does not include it. Microsoft originally introduced the taskbar mic-mute experience for Windows 11. See Microsoft's Windows keyboard shortcut reference and the Windows 11 mic-mute announcement.

Which microphone shortcuts work on Windows 10?

If your laptop, headset, dock, or USB microphone has a dedicated hardware mic-mute button, that is often the most dependable choice because it does not depend on a meeting app being in focus. Its behavior is device-specific, so check the manufacturer's documentation if the indicator light and Windows mute state do not agree.

Microsoft documents Ctrl+Shift+M for Teams. You can confirm the current behavior on the Microsoft Teams mute and unmute support page.

Create a global Windows 10 microphone mute shortcut

1. Install AutoHotkey v2

Download AutoHotkey v2 from the official AutoHotkey download directory and install it. Use a current v2 release; old AutoHotkey v1 microphone scripts use different syntax.

2. Find the exact name of your recording device

Press Windows+R, type mmsys.cpl, and press Enter. Open the Recording tab and note the name of the microphone you actually use. A built-in input may simply be called Microphone, while a USB headset could have a different name.

3. Create the Ctrl+Alt+M hotkey

Open Notepad and paste the following AutoHotkey v2 script:

#Requires AutoHotkey v2.0
^!m::SoundSetMute(-1, , "Microphone")

Save the file as mic-mute.ahk. In AutoHotkey syntax, ^ means Ctrl and ! means Alt, so ^!m becomes Ctrl+Alt+M. The value -1 tells SoundSetMute to toggle the current mute state.

If your recording device is not named Microphone, replace that text with the device name you found in the Recording tab. AutoHotkey can match a full device name or a unique beginning of the name. Its sound functions target audio endpoints, so the shortcut affects that selected recording device rather than every possible microphone attached to the PC. The behavior of SoundSetMute is documented in the AutoHotkey v2 reference.

4. Run and test the shortcut

Double-click mic-mute.ahk. AutoHotkey should appear in the notification area. Press Ctrl+Alt+M, then check your meeting or recording app to confirm that the input is muted. Press the same shortcut again to unmute.

If nothing happens, reopen mmsys.cpl and verify that the device name in the script matches the microphone your app is using. If you have several microphones with similar names, use the full display name so AutoHotkey targets the correct endpoint.

Why the old MicMute and PowerToys advice is outdated

Older guides often recommend the standalone MicMute utility or PowerToys Video Conference Mute. The old MicMute instructions in this article were based on software that had not been maintained for years, so they are no longer the best default recommendation. Microsoft also removed Video Conference Mute from PowerToys 0.88 after it had been in maintenance mode; the PowerToys team documented that change in its official GitHub repository.

One more thing about Windows 10

Standard Windows 10 support ended on October 14, 2025. Windows 10 PCs still work, and eligible devices can receive Extended Security Updates, but Microsoft recommends moving to Windows 11 when possible. See Microsoft's Windows 10 end-of-support guidance.