I have three computers that all used to live comfortably together on a single wired win 7 network. With Win 10, one of the machines says that it is on "newnet"; another says it's on "network1"; and the third says it's on "network2" AND "network3" (using two different ethernet adapters. As a result, these machines can't see each other. At various times, for reasons unknown, another machine may become briefly visible to the others, but then it goes away again.
Is there any way I can get all these machines to work together? I should note that they are all theoretically members of "workgroup".