I am trying to set up a development system as such:
Windows 10 pro 64-bit Fall creators update for both host and guest
VMware Workstation 14
The guest system can see an arduino plugged in just fine.
No matter what I have tried, I cannot get the guest to see a USBtinyISP. I have installed drivers on both the host and guest. Without vmware running, the host has no problem seeing the programmer. With vmware running, it's more hit & miss. With the guest running, the programmer properly disconnects from the host, but only shows in the guest as "unknown device." Occasionally, I get an error message about a driver failure in the guest, but again, it's hit & miss.
I don't expect that this will be an end-of-the-world kind of problem as I can always wire up a spare Arduino to act as an ISP programmer, but dammit, it's supposed to work.