Zoom on Desktop: How to turn your microphone On/Off

In the bottom-left corner, you will see a microphone icon (or a phone icon if you are calling in). To mute or unmute, simply click on the microphone icon. Alternatively, you can set a keyboard shortcut to mute or unmute in the Keyboard shortcuts tab in the settings. 

Note: The standard keyboard shortcut for mute/unmute is Alt+A (or Command+A for macOS users). 

To make sure that your microphone is working properly, you can test your audio both before and during your meeting.  

Before your meeting, access the settings menu in the top-right corner of the Zoom window. From settings, click Audio, then Test Mic. 

During your meeting, you can test your speaker and microphone by clicking the up arrow on the microphone icon. After clicking the up arrow, click Test Speaker & Microphone...   

Note: If you need to test your audio during your meeting, you should mute yourself to prevent any disruption to the meeting. Once you mute yourself, you will remain muted to all other participants throughout the audio test.