Hi Mike 10
You can do it from your Zoom desktop client.
Disable audio by default
To enable Mute my microphone when joining a meeting:
- Sign in to the Zoom desktop client.
- Click your profile picture, then click Settings.
- Click Audio

. - Select the Mute my microphone when joining a meeting check box.
Disable video or audio by default when joining a meeting
After clicking Join, you can also disable audio or video before entering a meeting by toggling the following options.
To disable audio or video before joining a meeting:
- Sign in to the Zoom desktop client and join a meeting.
- Select the Do not connect to audio check box.
- (Optional) Select the Turn off my video check box if you want to disable your video.
- Click Join.
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