Check the volume as well and make sure it’s audible.Then click on Audio & Video and make sure your device is selected.Click on More options (the three dots) and select Settings.How to Fix Skype Share System Sound Issues Check Your Skype Audio SettingsĮnsure your current audio device is set up as your default device under Audio Settings. You can’t access it as a stand-alone option. ⇒ Note: The Share System Sound option is only available when you’re sharing your screen.