If you are on Windows 10 and can't access the microphone, use the Windows search box to navigate to Microphone privacy settings.See Using the Zoom Client and Zoom Rooms with macOS 10.14 Mojave for more information. If you are on on Mac OS 10.14 Mojave or earlier and can't access the microphone, check your operating system permissions to confirm that Zoom has access to the microphone.Check Automatically adjust microphone settings if you want Zoom to adjust the input volume automatically.

You can select another microphone from the menu or adjust the input level. Click Recording when you are done and it will play back. Click Test Mic to test your microphone.In the Microphone section, you will see the green Input Level bar move when Zoom is picking up audio.If you cannot hear it, select a different speaker from the menu or adjust the Volume.Click Test Speaker to play a test tone.In the meeting controls, click the arrow next to Mute/ Unmute.You can access your audio settings and test your audio when you are already in a meeting. Follow the sections below to test your speaker or microphone.Click your profile picture, then click Settings.To test your audio, navigate to your audio settings before or during a meeting: Click Join with Computer Audio to join the test meeting with the selected microphone and speakers.Click Join with Computer audio to exit the speaker and microphone test.If you don't hear an audio replay, use the drop-down menu or click No to switch microphones until you hear the reply.If you don't hear the ringtone, use the drop-down menu or click No to switch speakers until you hear the ringtone. Click Yes to continue to the microphone test. The meeting will display a pop-up window to test your speakers.After joining a meeting, click Test Speaker and Microphone.

If you haven't enabled the setting to automatically join by computer audio, you can test your speaker and microphone before joining a meeting:

Zoom test audio and video