Paul said:

Good luck (luck is always required with SMB/CIFS),

Thank you. That worked.
I couldn't tell from your response which computer to do it to.
I was lucky that I picked the right computer to change.

If we name the computer with the shared files "localcomputer".
And if we name the computer trying to browse to it "remotecomputer".

This is what I did.
On localcomputer I changed nothing (the share was already set to shared).
On remotecomputer Start : Run : control : Control Panel : Programs :
Programs and Features : Turn Windows features on or off :
All these were originally turned off so I turned them all on
Turn Windows features on or off :SMB 1.0/CIFS File Sharing Support
Turn Windows features on or off : SMB 1.0/CIFS Automatic Removal
Turn Windows features on or off : SMB 1.0/CIFS Client
Turn Windows features on or off : SMB 1.0/CIFS Server
Turn Windows features on or off : SMB 1.0/CIFS

This was already on so I left it on.
Turn Windows features on or off : SMB Direct

On remotecomputer Start : Run : services.msc
This is what I had before changing all to "Automatic" and "Start".

Function Discovery Provider Host : Running : Manual : Local Service
Function Discovery Resource Publication : Running : Mannual (Trigger Start) : Local Service
SSDP Discovery : Running : Manual : Local Service
UPnP Device Host : notrunning : Manual : Local Service

I set all four to "Automatic" and "Start" and then rebooted the computer.
When the computer came back I went to "This PC" and then in the lower
open space for Network locations I clicked right to "add a network location"
and selected next twice and then selected "Browse..." which for the first
time showed the remote (and local) computer in the "Select the network folder"
form.

thanks for all that nice luck! )