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Windows 7: Where does Windows get info for "Network Map"

09 Jan 2010   #1
nate42nd

Windows 7 Professional x64
 
 
Where does Windows get info for "Network Map"

I have a small home network with 3 Windows 7 machines. I like to look at the "Network Map" now and then.

It changes with different routers and it even changes with different firmware on those routers. Last night I turned off "Homegroup" and now Windows cannot see ANY machines on the map. My network "works" fine. I have all computers sharing what I want.

I am asking "Where does Windows get it's information for the Network Map" so I can get the map working again. I already tried turning "Homegroup" back on, but here's what I get. (left) and what it looked like before (right) (I renamed it but settings are the same)

Where does Windows get info for "Network Map"-nomap.png Where does Windows get info for "Network Map"-mapofnetwork.png




My System SpecsSystem Spec
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09 Jan 2010   #2
logicearth

Windows 10 Pro (x64)
 
 

It gets its information by sending out a broadcast and listens for a reply from any supporting systems.
Link Layer Topology Discovery - Wikipedia, the free encyclopedia
My System SpecsSystem Spec
09 Jan 2010   #3
nate42nd

Windows 7 Professional x64
 
 

Thanks logicearth, that tells me where to start. I don't know where to start diagnosing this. It could be the "mapper" or the "responder"

It's the same on all network machines, but I still don't know where I would start.

Funny that my network works fine but this would suddenly become a problem. It may be a prelude to bigger problems is my fear.

Thanks for the info.
My System SpecsSystem Spec
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09 Jan 2010   #4
jfar

Vista Ult64, Win7600
 
 

I know this might sound stupid but, have you turned off your machine and turned it back on manually ,not Reboot ,
since you turned off Homegroup, If you haven't try it and see does it help.
My System SpecsSystem Spec
09 Jan 2010   #5
nate42nd

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by jfar View Post
I know this might sound stupid but, have you turned off your machine and turned it back on manually ,not Reboot ,
since you turned off Homegroup, If you haven't try it and see does it help.
I shut down all one machine. It did nothing.

I then shut down all machines and turned them all back on manually.

Windows 7 is now showing the full map.

Thanksj jfar, it must take a full start-up to re-detect the machines.....
My System SpecsSystem Spec
09 Jan 2010   #6
jfar

Vista Ult64, Win7600
 
 

Glad it worked.
My System SpecsSystem Spec
09 Jan 2010   #7
SouthSeaPirate

Windows 7, XP, 2003
 
 

Restart; the ultimate Windows feature! LOL

I do this with about 20% of all daily issues here at work.

Never knew of the map feature! Cool stuff

I take it that it wont work for non-7 machines?
My System SpecsSystem Spec
09 Jan 2010   #8
manhunter2826

Windows XP - Now Windows 7 Home Premium (64-bit).
 
 

This might be of help if related.
Link Layer Topology Discovery
My System SpecsSystem Spec
09 Jan 2010   #9
logicearth

Windows 10 Pro (x64)
 
 

Quote   Quote: Originally Posted by SouthSeaPirate View Post
I take it that it wont work for non-7 machines?
Works for Windows Vista, and Windows XP SP3, or for those XP Machines that install a hotfix.
My System SpecsSystem Spec
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 Where does Windows get info for "Network Map"




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