OK, I recorded a full install of Windows 10 and UCCNC. It's long and uncut to show that I'm not cheating. The network is long: the virtual machine has a newtork card bridged to the physical network card of my laptop, then one switch on my desk, another by my router, a third in my shop and a fourth on the machine itself and the AXBB is connected to this switch. The first 3 are Gigabit, the last is 10/100. I allowed UCCNC to communicate when Win10 asked, but no admin mode, nothing special. I also copied the working and configured version into a folder and homed my machine. (I also installed .Net Framework 3.5.)
Here is the video. (I always forget how to insert youtube, sorry...)