The network map uses Link Layer Topology Discovery (LLTD) or UPnP. So I would focus on those settings first.
UPnP devices (not supporting LLTD) are shown in a list below the main map. I have not addressed UPnP here.
Read entire post before fiddling please:-)
Go to
Control Panel \ View Network Stats and tasks \ Change Adaper settings
When I get there it is called in the address bar:
Control Panel\Network and Internet\Network Connections
Right click on a network interface e.g. "Wireless Network Connection"
Click Propeties
Compare the settings between a working interface and a non working one.
"Link-layer Topology Discovery mapper..."
"Link-Layer Topology discovery Responder ..."
Look potentially interesting in your context
Then:
#### This section likely irrelevant
Click on "Internet protocol Version 4"
Click on "Properties"
Click on "Advanced"
Click on "WINS" tab
Compare NetBIOS settings between working one and non working one. Adjust as needed.
#### end irrelevant
I am thinking more on turning on things that are off rather than the converse. I would not turn off anything that is on in case it affects something you are using. It could be irritating for example to discover in three months time that your network scanner would not work and to have no idea why:-)
It also might be some Windows firewall issue I would think.
Have a look at these:-
Use Network Map to manage and troubleshoot networked devices (from Windows Vista Inside Out)
You can turn discovery on and off globally for each network profile, Public, Work and Home here -
Enabling or disabling network discovery - Windows Help
If no joy, please post screenshots of what you are seeing working/not working and full text of any other messages.
Good luck and a Happy New Year.