You can use Viscosity (https://www.blackvpn.com/setup/windows/8-viscosity/) to automatically start when Windows starts. 

1) Go to Preferences > General > tick Start Viscosity at Login:

2) Select a connection under Preferences, then click the settings icon and select Duplicate Connection: 

3) Select the duplicate connection and click Edit: 

4) Tick the Connect When Viscosity Opens option: