Only issue I had is with regedit variables,
I wanted to change the default editor for openvpn scripts,
because notepad cannot handle unix LF,
so the scripts written on linux server come out all on one line, when viewed in notepad on windows.
I wanted to change editor to notepad++.exe
Problem:
OpenVPN Client 32-Bit on Windows x64
standard directory and variable is like dummy, does nothing, does not change editor
HKEY_LOCAL_MACHINE\SOFTWARE\OpenVPN-GUI\editor
Actual directory and variable
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\OpenVPN-GUI\editor
There is a ticket written for this, see
https://community.openvpn.net/openvpn/ticket/213