Hi ya Ed!
This, my friend, is why you earn the big bucks and I love you for it!
I am copy/pasting your post, saving for future reference... I know I'll need it again!
Well done.
Alligator gumbo...

Hi Thor, welcome aboard!
Homegroup can be a bear. What message is homegroup giving you on each machine? In file explorer, when you click on the homegroup folder, what screen shows on each machine?...