I have just up dated four of our computers to windows 10 and set up a wifi network between the 4 computers without too many problems.
However I have a problem with a local connection from my main pc (windows 10) to a pc which runs in parallel (pc on windows xp) they are linked by ethernet cable. When I boot the machines in the morning windows 10 displays an icon with the xp pc and all works fine. Later on in the day the xp pc icon has disappeared but working on the xp machine it is still possible to link to the windows 10 machine.
My question is once the icon has disappeared of the windows 10 pc how can I re-establish to link? It appears that the link still exists but I can't access it.