1. Response to ping should be allowed 2. What is output from a. ipconfig /all & b. route print ? 3. If analysis does not help, use network monitor to catch network traffic (NM either from Microsoft or Wireshark) 4. Check if there is No alternative NIC settings Rgds Milos

Using Wireshark I just see the ping requests, but can't tell why they are not being received. The DNS requests for Microsoft update are constant and dominate the traffic. Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : ***** Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : C8-60-00-86-F6-E1 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.115(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 204.130.255.3 209.63.0.6 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{BD93F54A-18B0-4E6B-9CCC-AE65A797B2AB}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Teredo Tunneling Pseudo-Interface: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes C:\Users\XXXX>route print =========================================================================== Interface List 13...c8 60 00 86 f6 e1 ......Realtek PCIe GBE Family Controller 1...........................Software Loopback Interface 1 11...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 12...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.115 266 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.1.0 255.255.255.0 On-link 192.168.1.115 266 192.168.1.115 255.255.255.255 On-link 192.168.1.115 266 192.168.1.255 255.255.255.255 On-link 192.168.1.115 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.115 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.115 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.1.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link =========================================================================== Persistent Routes: None >>The only difference I can see is that the other windows 7 machine (the one that works) has a duplicate entry in the IPv4 Persistant Routes table - like this: 0.0.0.0 0.0.0.0 192.168.1.1 default 0.0.0.0 0.0.0.0 192.168.1.1 default And it has some junk in the IPv6 active routes table that is different, but both should not be using IPv6 and our gateway is a PFSense linux box.

We have a small non-domain network with 5 XP boxes, 2 Windows 7 boxes, and a pair of linux servers. No DHCP, just static IPs. I added the first Windows 7 machine about 6 months ago and it works fine. I added the second windows 7 machine and it can display the other members of the network - the XP boxes, the other Windows 7 box, and the linux servers. I can ping the other boxes by IP address. The network icon in the system tray shows a caution (yellow triangle with "!"). The self diagnosis says that the DNS server is not responding. I can't ping the gateway - 192.168.1.1 - timed out. I can't ping addresses outside our network. (timed out) I can ping all the other computers in our network by IP address and navigate them, map drives, etc. in windows explorer. The ipconfig is identical to the other windows 7 machine, except the IP address is 192.168.1.115 on the new machine and .126 on the older, working machine. In the NIC setup I have unchecked the IPV6 and etc. leaving only the Client for Microsoft Networks, File and Print sharing for Microsoft, and IPv4 checked. It really is set up identically to the other machine that works - both have static IP addresses, subnet mask of 255.255.255.0, gateway = 192.168.1.1, DNS servers 204.130.255.3 and 209.63.0.6. Any ideas? Your help is appreciated. (why does microsoft insist on stupid interfaces like "home network, work network, or public network" to insulate users from the actual registry settings?!?!? - can we get an option to run in "show me the actual settings mode"?)

We have a small non-domain network with 5 XP boxes, 2 Windows 7 boxes, and a pair of linux servers. No DHCP, just static IPs. I added the first Windows 7 machine about 6 months ago and it works fine. I added the second windows 7 machine and it can display the other members of the network - the XP boxes, the other Windows 7 box, and the linux servers. I can ping the other boxes by IP address. The network icon in the system tray shows a caution (yellow triangle with "!"). The self diagnosis says that the DNS server is not responding. I can't ping the gateway - 192.168.1.1 - timed out. I can't ping addresses outside our network. (timed out) I can ping all the other computers in our network by IP address and navigate them, map drives, etc. in windows explorer. The ipconfig is identical to the other windows 7 machine, except the IP address is 192.168.1.115 on the new machine and .126 on the older, working machine. In the NIC setup I have unchecked the IPV6 and etc. leaving only the Client for Microsoft Networks, File and Print sharing for Microsoft, and IPv4 checked. It really is set up identically to the other machine that works - both have static IP addresses, subnet mask of 255.255.255.0, gateway = 192.168.1.1, DNS servers 204.130.255.3 and 209.63.0.6. Any ideas? Your help is appreciated. (why does microsoft insist on stupid interfaces like "home network, work network, or public network" to insulate users from the actual registry settings?!?!? - can we get an option to run in "show me the actual settings mode"?) I've the same problem. I solved this problem forcing the speed of the net adapter (a gigabit) to 100Mbps. The symptoms were the same. I have a five years old router not supporting 1Gb. I don't know if it can help you.

Thanks for the suggestion Michele! Unfortunately it did not make a difference to force 100Mbps. The other Win7 machine didn't need to so I am really stumped here. The self diagnosis says "Windows can't communicate with the device (Primary DNS server)" or something close to that. When I set the DNS server IP address on the local IPConfig to the gateway, it says it can't connect to the DNS server. Baffling.

No one from Microsoft reading these support forums can help?