WebRTC errors can be caused by being behind a double NAT, using a VPN or proxy, being in privacy browsing mode, or a privacy extension. Barring all that, non-d

WebRTC errors can be caused by being behind a double NAT, using a VPN or proxy, being in privacy browsing mode, or a privacy extension. Barring all that, non-default browser settings (i.e. disabling WebRTC or TURN).