This is what my Network map looks like:Note:All computers are on the Workgroup WORKGROUPAll computers have a subnet of 255.255.255.0All computers have a default gate way of 192.168.1.1Connected to Switch 1 (the switch inside the router) there are 2 computers:A) JoshQuadCoreIP: 192.168.1.140OS: Windows Vista UltimateModel: Custom BuiltB) JanetDesktopIP: 192.168.1.120OS: Windows XP Pro SP3Connected to Switch 2 (Ethernet Extender) are:C) XBOX 360IP: 192.168.1.3 (automatic)Connected to LAN1525 (The wireless part of the router)Switch 1Switch 2D) JanetLaptopIP: 192.168.1.8 (automatic)OS: Vista HomeModel: Lenova ThinkpadE) DownstairsHP IP: 192.168.1.100 OS: XP Media Center Model: HPLAN1525 is connected to the internet.We will ignore C since it is inconsequential to this problem.A can connect to only D. A can see all computers on the network.D is the only computer that can see and connect to A.B, D, E can all connect to each other and connect to each other.A can ping B,D,E by IP address, although not by Netbios name (for some reason nbtstat says the NetBT service is not loaded).As you can see A is the problem computer. I want to get it so it is visible on the XP computers. I am unsure what I did to get D visible...I have disabled the firewall on all computers.Computer A has the following items enabled:Client for Microsoft Networks...for some reason the name service provider keeps blanking out each time I restart the computer.QoS Packet SchedulerTCP/IPv4. Enabled NetBios over TCP/IPLLTD Mapper I/O DriverLLTD ResponderOn Computer A I have edited the following Regedit:I have set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa restrictanonymous to 0.I have set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa LmCompatibilityLevel to 1.I have set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters DhcpNodeType to 1.I have set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters EnableProxy to 0.I went into Local Security and changed the following:LAN Manager authentication level. Send LM & NTLM - use NTLMv2 session security if negotiatedI think I have covered everything. So what do I need to do to at least get A visible by B?

Try to install this LLTD update on XP computer, then test again. You can also test to access Vista's shared folder by typing \\192.168.1.140 in file explorer's address bar on XP computer. You can also check to see any firewall blocking on antivirus program. dawoddHome Network, Wireless Network and Computer Networking Made Easy

Hi, Is the issue resolved after you install LLTD update? If the issue occurs, as Dawoodd's suggestion, please let us know if you could connect to other Windows XP computers by the following method. 1. Click Start, 2. in the Start Search box type "\\IP address of one Windows XP computer" If the connection fails, please let us know the detail error message. Also please let us know if the problematic and the other Windows XP computers have a same username/password. I suggest that you enable NetBIOS over TCP/IP on the problematic Windows Vista computer, and check if it is visible on other Windows XP computers. http://technet.microsoft.com/en-us/library/bb727013.aspxArthur Xie - MSFT

I have had the LLTD responders on all computers.I don't know why I never tried typing in the IP address into the search bar. That connected me just fine to the XP.None of the computers share any user name but the Administrator username and Guest username.However I still am trying to get the NetBIOS enabled.However...even though I enabled NetBIOS over TCP/IP on the Vista connection it does not show up in ipconfig.MicrosoftWindows[Version6.0.6001]Copyright(c)2006MicrosoftCorporation.Allrightsreserved.C:\Users\Josh>nbtstat-nFailedtoaccessNetBTdriver--NetBTmaynotbeloadedSee IPConfigC:\Users\Josh>ipconfig/allWindowsIPConfigurationHostName............:JoshQuadCorePrimaryDnsSuffix.......:NodeType............:BroadcastIPRoutingEnabled........:NoWINSProxyEnabled........:NoEthernetadapterBottomPort:Connection-specificDNSSuffix.:Description...........:NVIDIAnForce10/100/1000MbpsEthernet#2PhysicalAddress.........:-----DHCPEnabled...........:NoAutoconfigurationEnabled....:YesIPv4Address...........:192.168.1.140(Preferred)SubnetMask...........:255.255.255.0DefaultGateway.........:192.168.1.1DNSServers...........:85.255.115.3085.255.112.226NetBIOSoverTcpip........:DisabledEthernetadapterTopPort:MediaState...........:MediadisconnectedConnection-specificDNSSuffix.:Description...........:NVIDIAnForce10/100/1000MbpsEthernetPhysicalAddress.........:-----DHCPEnabled...........:YesAutoconfigurationEnabled....:YesC:\Users\Josh>To see my various TCP settings (where you see that I have NetBIOS enabled) seehttp://webmetz.com/TCP.png

Hi, Sorry for delay. If you could access other computers with IP address, the network connection should work fine. The cause of the issue may be the NetBIOS over TCP/IP. Please follow the steps below to repair the service for NetBIOS over TCP/IP. 1. Launch Notepad. 2. Paste the following contents into Notepad. Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt] "DisplayName"="NETBT" "Group"="PNP_TDI" "ImagePath"=hex(2):53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,44,00,\ 52,00,49,00,56,00,45,00,52,00,53,00,5c,00,6e,00,65,00,74,00,62,00,74,00,2e,\ 00,73,00,79,00,73,00,00,00 "Description"="This service implements NetBios over TCP/IP." "ErrorControl"=dword:00000001 "Start"=dword:00000001 "Type"=dword:00000001 "DependOnService"=hex(7):54,00,64,00,78,00,00,00,74,00,63,00,70,00,69,00,70,00,\ 00,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Linkage] "OtherDependencies"=hex(7):54,00,63,00,70,00,69,00,70,00,00,00,00,00 "Bind"=hex(7):5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,00,54,00,63,00,70,\ 00,69,00,70,00,5f,00,7b,00,46,00,38,00,46,00,38,00,35,00,30,00,32,00,32,00,\ 2d,00,37,00,31,00,46,00,39,00,2d,00,34,00,38,00,37,00,46,00,2d,00,41,00,32,\ 00,44,00,31,00,2d,00,46,00,32,00,44,00,43,00,43,00,30,00,33,00,44,00,43,00,\ 32,00,41,00,37,00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,\ 00,54,00,63,00,70,00,69,00,70,00,5f,00,7b,00,38,00,44,00,34,00,38,00,34,00,\ 41,00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,2d,00,34,00,39,00,36,00,44,\ 00,2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,00,33,00,37,00,45,00,34,00,\ 38,00,32,00,41,00,43,00,39,00,36,00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,\ 00,63,00,65,00,5c,00,54,00,63,00,70,00,69,00,70,00,36,00,5f,00,7b,00,41,00,\ 41,00,39,00,46,00,38,00,38,00,43,00,38,00,2d,00,32,00,46,00,46,00,42,00,2d,\ 00,34,00,38,00,41,00,30,00,2d,00,41,00,43,00,41,00,39,00,2d,00,38,00,38,00,\ 30,00,39,00,35,00,44,00,36,00,31,00,33,00,33,00,32,00,32,00,7d,00,00,00,5c,\ 00,44,00,65,00,76,00,69,00,63,00,65,00,5c,00,54,00,63,00,70,00,69,00,70,00,\ 36,00,5f,00,7b,00,46,00,38,00,46,00,38,00,35,00,30,00,32,00,32,00,2d,00,37,\ 00,31,00,46,00,39,00,2d,00,34,00,38,00,37,00,46,00,2d,00,41,00,32,00,44,00,\ 31,00,2d,00,46,00,32,00,44,00,43,00,43,00,30,00,33,00,44,00,43,00,32,00,41,\ 00,37,00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,00,54,00,\ 63,00,70,00,69,00,70,00,36,00,5f,00,7b,00,38,00,44,00,34,00,38,00,34,00,41,\ 00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,2d,00,34,00,39,00,36,00,44,00,\ 2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,00,33,00,37,00,45,00,34,00,38,\ 00,32,00,41,00,43,00,39,00,36,00,7d,00,00,00,00,00 "Route"=hex(7):22,00,54,00,63,00,70,00,69,00,70,00,22,00,20,00,22,00,7b,00,46,\ 00,38,00,46,00,38,00,35,00,30,00,32,00,32,00,2d,00,37,00,31,00,46,00,39,00,\ 2d,00,34,00,38,00,37,00,46,00,2d,00,41,00,32,00,44,00,31,00,2d,00,46,00,32,\ 00,44,00,43,00,43,00,30,00,33,00,44,00,43,00,32,00,41,00,37,00,7d,00,22,00,\ 00,00,22,00,54,00,63,00,70,00,69,00,70,00,22,00,20,00,22,00,7b,00,38,00,44,\ 00,34,00,38,00,34,00,41,00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,2d,00,\ 34,00,39,00,36,00,44,00,2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,00,33,\ 00,37,00,45,00,34,00,38,00,32,00,41,00,43,00,39,00,36,00,7d,00,22,00,00,00,\ 22,00,54,00,63,00,70,00,69,00,70,00,36,00,22,00,20,00,22,00,7b,00,41,00,41,\ 00,39,00,46,00,38,00,38,00,43,00,38,00,2d,00,32,00,46,00,46,00,42,00,2d,00,\ 34,00,38,00,41,00,30,00,2d,00,41,00,43,00,41,00,39,00,2d,00,38,00,38,00,30,\ 00,39,00,35,00,44,00,36,00,31,00,33,00,33,00,32,00,32,00,7d,00,22,00,00,00,\ 22,00,54,00,63,00,70,00,69,00,70,00,36,00,22,00,20,00,22,00,7b,00,46,00,38,\ 00,46,00,38,00,35,00,30,00,32,00,32,00,2d,00,37,00,31,00,46,00,39,00,2d,00,\ 34,00,38,00,37,00,46,00,2d,00,41,00,32,00,44,00,31,00,2d,00,46,00,32,00,44,\ 00,43,00,43,00,30,00,33,00,44,00,43,00,32,00,41,00,37,00,7d,00,22,00,00,00,\ 22,00,54,00,63,00,70,00,69,00,70,00,36,00,22,00,20,00,22,00,7b,00,38,00,44,\ 00,34,00,38,00,34,00,41,00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,2d,00,\ 34,00,39,00,36,00,44,00,2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,00,33,\ 00,37,00,45,00,34,00,38,00,32,00,41,00,43,00,39,00,36,00,7d,00,22,00,00,00,\ 00,00 "Export"=hex(7):5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,00,4e,00,65,00,74,\ 00,42,00,54,00,5f,00,54,00,63,00,70,00,69,00,70,00,5f,00,7b,00,46,00,38,00,\ 46,00,38,00,35,00,30,00,32,00,32,00,2d,00,37,00,31,00,46,00,39,00,2d,00,34,\ 00,38,00,37,00,46,00,2d,00,41,00,32,00,44,00,31,00,2d,00,46,00,32,00,44,00,\ 43,00,43,00,30,00,33,00,44,00,43,00,32,00,41,00,37,00,7d,00,00,00,5c,00,44,\ 00,65,00,76,00,69,00,63,00,65,00,5c,00,4e,00,65,00,74,00,42,00,54,00,5f,00,\ 54,00,63,00,70,00,69,00,70,00,5f,00,7b,00,38,00,44,00,34,00,38,00,34,00,41,\ 00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,2d,00,34,00,39,00,36,00,44,00,\ 2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,00,33,00,37,00,45,00,34,00,38,\ 00,32,00,41,00,43,00,39,00,36,00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,00,\ 63,00,65,00,5c,00,4e,00,65,00,74,00,42,00,54,00,5f,00,54,00,63,00,70,00,69,\ 00,70,00,36,00,5f,00,7b,00,41,00,41,00,39,00,46,00,38,00,38,00,43,00,38,00,\ 2d,00,32,00,46,00,46,00,42,00,2d,00,34,00,38,00,41,00,30,00,2d,00,41,00,43,\ 00,41,00,39,00,2d,00,38,00,38,00,30,00,39,00,35,00,44,00,36,00,31,00,33,00,\ 33,00,32,00,32,00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,\ 00,4e,00,65,00,74,00,42,00,54,00,5f,00,54,00,63,00,70,00,69,00,70,00,36,00,\ 5f,00,7b,00,46,00,38,00,46,00,38,00,35,00,30,00,32,00,32,00,2d,00,37,00,31,\ 00,46,00,39,00,2d,00,34,00,38,00,37,00,46,00,2d,00,41,00,32,00,44,00,31,00,\ 2d,00,46,00,32,00,44,00,43,00,43,00,30,00,33,00,44,00,43,00,32,00,41,00,37,\ 00,7d,00,00,00,5c,00,44,00,65,00,76,00,69,00,63,00,65,00,5c,00,4e,00,65,00,\ 74,00,42,00,54,00,5f,00,54,00,63,00,70,00,69,00,70,00,36,00,5f,00,7b,00,38,\ 00,44,00,34,00,38,00,34,00,41,00,41,00,33,00,2d,00,45,00,38,00,34,00,33,00,\ 2d,00,34,00,39,00,36,00,44,00,2d,00,38,00,33,00,42,00,33,00,2d,00,34,00,42,\ 00,33,00,37,00,45,00,34,00,38,00,32,00,41,00,43,00,39,00,36,00,7d,00,00,00,\ 00,00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters] "BcastNameQueryCount"=dword:00000003 "BcastQueryTimeout"=dword:000002ee "CacheTimeout"=dword:000927c0 "EnableLMHOSTS"=dword:00000001 "NameServerPort"=dword:00000089 "NameSrvQueryCount"=dword:00000003 "NameSrvQueryTimeout"=dword:000005dc "NbProvider"="_tcp" "SessionKeepAlive"=dword:0036ee80 "Size/Small/Medium/Large"=dword:00000001 "TransportBindName"="\\Device\\" "UseNewSmb"=dword:00000001 "DhcpNodeType"=dword:00000004 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters\Interfaces] [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters\Interfaces\Tcpip_{8D484AA3-E843-496D-83B3-4B37E482AC96}] "NameServerList"=hex(7):00,00 "NetbiosOptions"=dword:00000000 "DhcpNameServerList"=hex(7):31,00,35,00,37,00,2e,00,36,00,30,00,2e,00,31,00,30,\ 00,34,00,2e,00,33,00,34,00,00,00,31,00,35,00,37,00,2e,00,36,00,30,00,2e,00,\ 32,00,31,00,38,00,2e,00,31,00,39,00,00,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Parameters\Interfaces\Tcpip_{F8F85022-71F9-487F-A2D1-F2DCC03DC2A7}] "NameServerList"=hex(7):00,00 "NetbiosOptions"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Security] "Security"=hex:01,00,14,88,d0,00,00,00,dc,00,00,00,14,00,00,00,30,00,00,00,02,\ 00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,00,01,00,00,\ 00,00,02,00,a0,00,07,00,00,00,00,00,14,00,8d,01,02,00,01,01,00,00,00,00,00,\ 05,0b,00,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,\ 20,02,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,25,\ 02,00,00,00,00,14,00,fd,01,02,00,01,01,00,00,00,00,00,05,12,00,00,00,00,00,\ 14,00,40,00,00,00,01,01,00,00,00,00,00,05,13,00,00,00,00,00,14,00,40,00,00,\ 00,01,01,00,00,00,00,00,05,14,00,00,00,00,00,18,00,9d,01,02,00,01,02,00,00,\ 00,00,00,05,20,00,00,00,2c,02,00,00,01,01,00,00,00,00,00,05,12,00,00,00,01,\ 01,00,00,00,00,00,05,12,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netbt\Enum] "0"="Root\\LEGACY_NETBT\\0000" "Count"=dword:00000001 "NextInstance"=dword:00000001 4. Save the file on Desktop with the name "netbt.reg". 5. On Desktop, double-click on netbt.reg. It will prompt that this task will modify your Registry, allow the change. After finish, I suggest that youcheck your TCP/IP settings, then restart. Hope it helps. Arthur Xie - MSFT