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Network Browsing issues

Posted on 2015-02-19
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Last Modified: 2015-03-25
Having issues with network neighborhood not populating like it used to in W7 Pro

I have a couple of different NAS's that used to populate under the network neighbor hood,but no longer do so.
netbios.PNG
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Question by:pgm554
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14 Comments
 
LVL 71

Expert Comment

by:Chris Dent
ID: 40621001
Do you have WINS setup? Or are you operating in a single IP subnet?

Do you have the Computer Browser service enabled on every device?

Chris
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LVL 71

Expert Comment

by:Chris Dent
ID: 40621010
Oh and don't forget the Windows Firewall, you'll have to ensure it's allowing all the broadcast traffic required to populate the browse list.

Chris
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LVL 47

Expert Comment

by:Craig Beck
ID: 40621029
What protocol do the NAS' use to announce?  Are they SMB, DLNA, UPnP, etc?
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LVL 43

Expert Comment

by:Davis McCarn
ID: 40621061
First, make sure that all of the PC's are on a WORK network.  Homegroups don't like non-Windoze devices.
Second, make sure that the router is setup to reserve the ip addresses of the NAS's.  Many newer routers will not report devices with static ip's unless you do so.
See page 5-2 of this: www.downloads.netgear.com/files/WNR3500v2_UM_07MAY09.pdf
If that doesn't clear things up, we may need to create a HOSTS file with entries for the NAS'.
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LVL 47

Expert Comment

by:Craig Beck
ID: 40621114
^^^ I think you're assuming the NAS is connected to the router via USB @DavisMcCarn?

I'm guessing that's not the case due to the sheer number of other NAS' that are already showing up in Explorer.

@pgm554 - are the NAS' connected via USB to the router, or via LAN?
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LVL 43

Expert Comment

by:Davis McCarn
ID: 40621292
No, I'm assuming everything is connected to the LAN.
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LVL 47

Expert Comment

by:Craig Beck
ID: 40621347
So why would you need to reserve an IP for a device to announce its presence using a broadcast?  The router shouldn't need to be touched in order to get the NAS to appear on the network.
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LVL 30

Author Comment

by:pgm554
ID: 40621516
Setup as work network now,still no go,

as for file sharing method windows default.
winfs.PNG
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LVL 43

Expert Comment

by:Davis McCarn
ID: 40621548
The reason you reserve an ip address is because many of the new routers act as the DNS and NETBIOS servers.  When the device is not listed in the router, it often does not appear on the network.
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LVL 71

Expert Comment

by:Chris Dent
ID: 40621583
DNS is not relevant.

Network Browsing works by electing a master browser for the subnet. All devices must announce themselves to the Master Browser (LMAnnounce) before they'll appear in the list.

*Everything* is broadcast based unless you have WINS, and even then you can't get away from it entirely.

For that to work you must ensure the "Computer Browser" service is running everywhere. You must make an effort to find the master browser. You may find the Windows Firewall is blocking such traffic as well.

Unhappily all the debugging tools for this are very hard to get these days. They all date back to Windows NT and hang around in the resource kits for that OS. NetBIOS hasn't been "required" since then and since it was hard to work with in the first place few people bother these days.

Chris
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LVL 47

Expert Comment

by:Craig Beck
ID: 40621706
Agree with Chris, hence asking the question.  Not all networks use routers that act like media gateways.  If I had a Cisco 2911, for example, and no DNS server I'd still expect to be able to see the NAS if connected via LAN, even though the router would be just that - a router.
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LVL 43

Expert Comment

by:Davis McCarn
ID: 40622230
The sole purpose of the "Computer Browser" service is to find the master browser and, if not found, attempt to assume that role.  In a Workgroup environment, this wreaks havoc in that each PC attempts to find the master browser and, all too often, decides it should assume the role.  Just to be ugly, M$ believes that every newer flavor of Windoze does a better job so adding an 8 PC clobbers the existing master if it is running 7 and XP is never happy as it doesn't know how to deal with 7 or 8. When this happens, the symptom is that many (or most) of the network devices and PC's disappear from Network Places.
The real fix is to choose a PC which is on more often than the other PC's and add the IsDomainMaster entry to its registry.  Leave the Computer Browser alone on the second most available PC and disable the service on every other PC on the network. Turn off everybody, boot them back up with the domain master first, and you'll find a much happier network.
If; however, you still have troubles, the fix is to add entries to the LMHOSTS file for the irksome devices.  The entries are in the form of: 192.168.0.100      <computername>      #PRE and the #PRE tells lanman to preload the entry.
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LVL 30

Accepted Solution

by:
pgm554 earned 0 total points
ID: 40635988
Now one of the NAS ( Lenovo/Iomega DX) is back in the explorer window.

All the firmware on the NAS is the same rev and pretty much all set to default setting.
nb2.PNG
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LVL 30

Author Closing Comment

by:pgm554
ID: 40686678
No real infinitive answer here.
Sometimes ot works,other times no.
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