I have two very similar desktop PCs, both running Win10 from when they were built, perhaps six months ago. Same Intel processor, same Intel network adapter and driver. On one machine, there is a 5-10 second delay before network connection is established, every time that the machine is either rebooted or woken from sleep. After that delay, everything works fine. On the other machine, as on most Windows machines, there is no such delay.

The delay isn't crippling, but it is annoying. Can anyone suggest what feature of Windows 10 might be the source of this delay? What is Windows trying to do during those 5-10 seconds? Maybe something about a Homegroup? I don't know where to start looking.