Using AirVPN with OpenVPN from terminal under Windows
1Download your configuration file from the page Config Generator. If you don't already have the OpenVPN package installed in your system, you can tick Advanced Mode and tick Bundle executable. In this case, remember to install tap_windows.exe, the system driver required under Windows.
2Open a prompt console with administrative privileges (Start Menu, locate Command Prompt under Accessories, right click and select Run as Administrator), reach the directory where you pasted the files generated by the Configuration Generator and launch
openvpn.exe foo.ovpnfoo.ovpn is any of the .ovpn files generated by the Config Generator.