Hi @guldil ,
the current endorsed way to monitor windows machines is using Icinga for Windows (IfW).
It’s a big topic, since it includes tools for deploying Icinga2 as well as a new set of plugins, but it works well (mostly).
The basic idea is: you use IfW to install Icinga2 as well as the icinga powershell service and use the icinga powershell plugins to monitor (but don’t have to).
It might be easiest, if you get your hands on a test machine and go through the “Getting started” part of the documentation for IfW.