Different versions of Mac OS might have permissions preventing Zoom from accessing your camera. The problem started after I updated Zoom.
 
 

Speaker is not working on zoom – none:. My microphone isn’t working in Teams

 
If it’s a one-off problem, there’s likely nothing you can do about it except wait for the problem to pass – you could try stopping all other activity on your connection to let Zoom have all the bandwidth available. Discover new ways to use Zoom solutions to power your modern workforce. Or, if you want to use a Bluetooth headset, make sure it’s properly connected to the device running Zoom. In response to CarlaA. Try This! Features Work from home. Related: The best webcams available Zoom audio not working.

– Common Zoom problems and how to fix them

 
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