no sound AT ALL when screen sharing youtube videos

[camyxx1]

When I share my screen and play a video, I can neither hear the sound nor the other participants.

I usually test the video before, and the video is perfect, but when I share my screen, this problem happens. 

The "share sound" option is checked, speaker "same as system" is checked.

I also realised that when the other participant is not using earphones, they can hear the audio, and I can hear the audio through their microphone. But when they're using earphones, neither I can hear the sound nor can they hear it.

Never had this problem before, and I hadn't changed anything in the settings.

windows 11

chrome 

zoom version 6.4.12 (64384)

[storyhub]

As an audio and broadcast engineer I can tell you that computer audio can be very complicated. Screen sharing needs to be via the client. Playback audio for youtube is controlled by windows not Zoom. The audio that the participant hears is controlled by Zoom and can be different than the system default. If they hear audio when their speakers are on but not when earphones are used these are 2 different audio sources and Zoom does not necessarily auto switch them. The listener at the other end needs to be sure that the correct device is selected in Zoom's audio settings. Zoom offers a troubleshooting tool in the audio menu (not settings) to help figure out the correct device to use.

If this works please click accept as a solution.