OpenVPN for windows is one of my favorite vpn. Here how to AutoConnect and make an autologin.

How to make the auto logon

1) Create a text file and inside store user and password:

Example

myuser

mypassword

2) Save it for example as login.conf in the config folder.
In my case the folder is C:\Program Files\OpenVPN\config

3) Edit the config file of your vpn.
In my case the file is stored in C:\Program Files\OpenVPN\config and the name is myremotehost-1201-myuser-config.ovpn
Usually the name reports the remote host name.

4) Add the following line
auth-user-pass login.conf

5) Save and Exit

 NOTE: DO IT ONLY IF YOUR PC IS SECURE AND NOT SHARED

How to make AutoConnect to favorite VPN

You need to open the properties of windows shortcut and add after the quotes --connect configfile.ovpn

In my case I have

"C:\Program Files\OpenVPN\bin\openvpn-gui.exe" --connect myremotehost-1201-myuser-config.ovpn

Bonus How to

• DNS ISSUE WINDOWS 10

The Windows 10 DNS resolver could create a problem to OpenVPN.

The is a DLL on GitHub that fix it
"Windows 10 DNS resolver sends DNS requests in parallel to all available network interfaces and uses the fastest reply to come. If you use DNS from the local network, this problem allows your ISP or a hacker with Wi-Fi ap to hijack your DNS records and steal your data even if you use VPN ."
See the link on "references" section 

• CONNECTED BUT CANNOT CONNECT TO ANY LOCAL SERVICE

Also ping fails?

Try to restart Open VPN as Administrator. 

• CANNOT CONNECT

If your pc has more than one connection port, for example wifi and lan and you are using lan, try to close the wifi and viceversa

- have fun -