Bob and PN2,
Hope you guys had a good Thanksgiving.
Well, it looks like my helpers at social.technet.microsoft.com have abandoned the effort. :-(
There was a late suggestion made before I left, and I replied to it on Monday the 27th. Not a single reply.
A couple days before Thanksgiving, we did get Windows 8.1 and 10 to connect to the Mac, and access the shared drives and folders. For Windows 7 and older, still does not work.
So, it would seem the Mac is not the issue, as I had to remind the helpers a couple of time. I do have to give them some modicum of benefit of a doubt, as it was obvious that English is not their primary language.
But the Mac connects to everything Windows I've tried to connect to. And since all but one computer is within 5' of this Mac, things will work, but just be inconvenient. I'm not one for having any extra and unnecessary "footwork" when doing just about anything. LOL The biggest inconvenience will be in printing, as my default printer is a USB connection to the Mac. My network printer died a couple years ago.
Unless one of you have a "flash of brilliance" on what the Windows settings should be, I'm giving up the effort until I stumble on to some suggestion that actually works.
The next networking task will be to get Linux Mint 18.2 to connect to everything. Wish me luck!!! ROFL
I hope you both have a great Holiday Season.