Why are you installing individual pieces of VMWare tools rather than a standard install? Keep in mind that none of the physical hardware, aside from the CPU, is visible to the guest.
I'm not. I installed the 10.2.5 64 bit update in the Win 10 VM using the .exe file.
Just want to know if wmnetx3 is supposed to be working in Fusion and if it is better than the "standard" Intel pro/1000 MT driver for a Windows 2008 R2 VM.
It installed in my Window 10 VM but the driver didn't start.
But I didn't add an extra network interface in Fusion if that would help getting the vwmnetx3 driver to run and I don't want to get MS licensing troubles.
You can't install hardware drivers inside a VM, since the hardware isn't visible to it - only drivers from the tools work properly.
You need to edit the vmx configuration file of the VM by replacing the "e1000" or "e1000e" as the case maybe with vmxnet3.
ethernet0.virtualDev = "vmxnet3"
See the screenshot below that the vmxnet3 present in Device Manager from a Windows 10 VM running on Fusion 8.5.10. Whether you get better performance is a different issue. Generally vmxnet3 is desired when you have a 10Gbps physical adapter on the host.