You’re welcome. On most videos there should be a speaker icon with a small “x” or possibly a slash through it. If you see this icon I would suggest trying to click on it just in case the videos are muted. Most are muted initially and you would need to click the icon to activate the sound. I have left the IT ticket submitted just in case, but please let us know if you try this method and the problem persists. If it works, you can also let us know so that we can cancel the request submitted to IT.