@Thorgal789, I've solved it and it was embarrassingly easy.. I forgot to install the Python runtime for my server..
Now I'll start testing it all out!

@s4xp, it's called "deCONZ plugin" in hardware. Have you correctly installed it ? If yes you will have a file path like this one .../domoticz/plugins/deCONZ/plugin.py IDK if the git command work on windows, but you can just download files and copy them at good place Okey, then I can't see it in the ...

@Thorgal789 Hi, I'm recently bought a Conbee Zigbee controller to try it out with Domoticz that I'm currently running on a Win 2012R2 srv. But I'm having problem to get the plugin to show up in the h/w list, at least not under deConz, domoticz Bridge or anything similar.