There are small changes with each new release of OpenVPN. This can make earlier tutorials slightly out of date. I have collected together points from all over the web and consolidated them into up-to-date notes for Linux and Windows as at May 2024.
Create an OpenVPN server on Linux https://dcame.net/openvpnl.html
Create an OpenVPN server on Windows https://dcame.net/openvpnw.html
Create an OpenVPN server on Linux https://dcame.net/openvpnl.html
Create an OpenVPN server on Windows https://dcame.net/openvpnw.html