How to mute microphone on zoom meeting? To mute your microphone in a Zoom meeting, you can click the microphone icon in the meeting controls toolbar. You can also use a keyboard shortcut. How to mute your microphone on Zoom Join or start a meeting Tap your screen to view the meeting controls toolbar Locate the microphone icon Click the microphone icon to mute or unmute yourself Keyboard shortcuts for muting and unmuting PC: Press Alt+A to mute or unmute Mac: Press Command+Shift+A to mute or unmute How to mute your microphone when joining a meeting Sign in to the Zoom desktop app Click your profile picture, then click Settings Click Audio Select the Mute my microphone when joining a meeting check box