Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Routing Problem Win7 and XP

07 Aug 2010   #1

Win7 64-bit
Routing Problem Win7 and XP

I am connecting several Windows 7 laptops via wireless to a wired network of XP machines. After several frustrating days trying to figure out why I couldn't see shares on the network I think I've finally caught the culprit: the netbios master browser. Can anyone shed some insight into what's going on below.

The wired network is a group of XP machines attached to a NAT router which provides DHCP addresses to the network. They are part of a workgroup and so there is no Domain Name Server attached. So long as this was just an XP network everthing worked fine, but it all went south when trying to attach the Windows 7 laptops.

I read that I would need to install the LLTD Responder onto the XP machines so I downloaded it from Microsoft and performed the installation which seemed to go smoothly. Except that it didn't seem to help anything get discovered. Then I read that I'd have to enable NetBios on all of the machines (not the Default option on the Wins tab, but the actual Enable option just to be sure). Still no connections. I checked system services: Computer Browser is running and so is TCPIP NetBios Helper. I made sure that Network Discovery is on under the advanced sharing tab on the Win7 machines. I switched off the firewalls. Still no connections. I can ping all of the devices on the network, and I can even do so using host names, which seems to suggest that name resolution is working.

The Win7 system event log provides what may be a big clue to the problem: NetBT throws EventID 4321: The name "WORKGROUP :1d" could not be registered on the interface with IP address The computer with the IP address did not allow the name to be claimed by this computer.

I ran NBTSTAT -A to read the routing table and discovered what looks like the source of the problem:

Wireless Network Connection:
Node IpAddress: [] Scope Id: []

BB1 <00> UNIQUE Registered
WORKGROUP <00> GROUP Registered
BB1 <20> UNIQUE Registered
SNTL_BB1 <20> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered

This is an XP computer, which is acting as the master browser, and it already has an entry for the workgroup name and a unique entry also that would seem to be preventing the Win7 machines from connecting. Am I reading this correctly?
What might be the cause of this, and how can I fix it? I suspect that something is messed up with NetBios and which device is controlling access to resources on the network. I also suspect that I may not be going about this the right way and that I possibly shouldn't be using NetBios at all.

Can somebody see what's going on and suggest a way out? Thanks.


My System SpecsSystem Spec
07 Aug 2010   #2

Windows 7 Ult, Windows 8.1 Pro,

Hello phuile,
The LLTD responder is only so that your XP machines will show up on the Windows 7 network map. If you can't get your Windows 7 machines to connect to the router wirelessly then your router is probably in need of a firmware update. What kind of router are you using for this?
My System SpecsSystem Spec
09 Aug 2010   #3

Win7 64-bit

Firmware upgrade to the routers did the trick. Win 7 and XP are now networking happily and so far seem to
be reliable. (I hope I'm speaking too soon!) Thanks for the suggestion.
My System SpecsSystem Spec

09 Aug 2010   #4

Windows 7 Ult, Windows 8.1 Pro,

Sounds good phuile, firmware updates have saved the day many times here. Glad to see that it worked for you.
My System SpecsSystem Spec

 Routing Problem Win7 and XP

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar help and support threads
Thread Forum
Routing two nics on win7
Hi, I am having a problem setting up a route between to network cards with windows 7. I am on a networkengineering course and we have just set up our own servers SBS2008 i have to NICs in my windows7 box on connects to the proxy then out to the internet then the other connects to my server i am...
Network & Sharing
Is it Routing or DNS issue?
Hi all, I recently face a problem on windows 7 unable to access many sites in my office network. The whole story goes like this. As my company is a regional subsidiary, we have a cisco router that route back to the main office for applications and emails. The local LAN has a fortigate 60...
Network & Sharing
Routing problem with 2 network cards
Hello, I have some difficulties managing routes for my network cards. I have 2 network cards, one I use for internet, the other for multicast. Apparently, the current behaviour is that Windows chooses the first card he founds for multicast, and that will be the internet one. So, my cards are...
Network & Sharing
Strange routing problem on VPN
Hi, Situation is as follows. Home computer running Windows 7 Ultimate x64, sets up VPN connection (LT2P + IPSec, "use remote gateway" disabled) to office. Subnet is 192.168.64.x Office has Draytek Vigor 2920 router, subnet is 192.168.32.x The VPN connection is established, but...
Network & Sharing
Cannot disable IP Routing in Win 7
Hi Ladies/Gentlemen, Totally new to this. I have just joined this forum yesterday as I've come to the end of my wits. I'm trying to work out why I cannot network this HP laptop win 7 Ultimate, to win XP desktop. My daughters HP win 7 Home Premium laptop connected fine to the workgroup...
Network & Sharing
Cable Routing
I began this subject back some days ago, but can't find the thread for it, so I'm starting another. I just received an Audiovox TV Volume Controller that I ordered, which is supposed to be placed between the PC soundcard and the speakers, but there are only two and white, while the...
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 13:43.

Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App