Open CMD as admin netsh interface ipv4 show interfaces Depending on whether you use LAN or WLAN to connect to the internet, look for a LAN or WLAN interface which has the state "connected". Not TAP, not Teredo, not Miniport, also not VirtualBox/TeamViewer adapter! The name is something like "local area connection" or "wireless local area connecton 2". I only know the german name, sorry. Maybe a picture can help, look below. It says that I have three connected interfaces, "Loopback", "LAN-Verb