Thanks, but this didn't resolve the problem either.
There appears to be a problem specific to Win10 that causes this failure... I'm currently checking out the suggestions at;
http://woshub.com/network-computers-not-showing-windows-10/
A key symptom is that when the network icon in windows explorer is clicked, it only shows devices and nothing related to the lan or other computers... _including_ the computer that I am using file explorer on.
I have network sharing turned on and didn't change anything before this problem arose. If I find a solution, I will post it.
Beverly Howard