You mean: connect an Ethernet card to your Arduino, RDP into it, enter the product key, oh no wait error 80004005, google for a bit, phone MS support, work your way around the world starting from a crackly line in India, copy a .reg file to a USB stick, run it, activate windows again, no error 8004676, google, reboot the arduino, now the network won't respond, netsh IP reset, reboot, RDp back in, enter product key, activating...., still activating...., no still activating..., done, shit 976Mb of updates to be applied.
(I do this as a day job)