I can't hear guest's audio. Their mics are working fine. Only happens on my desktop, not my laptop

Hello Bonnie,

Please go through these steps and hope they fix your issues:

https://support.zoom.us/hc/en-us/articles/7302459648397-Troubleshooting-audio-issues

If not, Please open a support ticket.

If this response helps, please accept the answer as an accepted solution, so others can benefit as well.