DNS Troubleshooting
**Special Note: You may want to try the Winsock Fix Tool in the Downloads Section. The tool may fix some or all your issue of trying to restore your Internet or Network connection.
If you are having a problem resolving Domain Name Suffix's (DNS) follow the next few steps to see you can resolve your issue. If the following steps still do not resolve your problem, you may need to contact you computer manufacturer or even Microsoft. Most common problems causing you to be unable to resolve DNS could be a newly installed program, a corrupted TCP/IP stack, or some other software issue with your operating system. There may be a possibility that a restore of your system may be needed.
First disable any and all firewall programs. If the next step is a success, your problem may be you firewall.
Go to Start->Run->(type) command (This should open a dos prompt C:\ )
(At the prompt) Type ping yahoo.com (see below)
If it looks like the above screen shot you should be able get online. If it looks like below, then we need to go further.
Let us ensure we have a IP Address, go to winipcfg (Win9x/Me) or ipconfig (WinNT/2K/XP)
Windows NT/2K/XP
Windows 9x/Me
You should have a public IP Address like 71.x.x.x or 68.x.x.x . If you have a private IP Address like 192.x.x.x or 172.x.x.x you may have a DNS issue with you router or server providing you your IP Addresses.
Second step will be to rebuild your TCP/IP stack, this is common in Windows 9x/Me.
Windows 9x/Me
Go to Start->Settings->Control Panel->Network
You should have a screen like this:
Click on the Protocol TCP/IP and
click remove. Remove each entry of
TCP/IP in here. Then click ok, it
may prompt “Your Network Is Incomplete” just click ok.
Then reboot.
Once back to your desktop after
reboot go through the same steps and back into network properties.
This time though you want to select the adapter.
Then click add.
A screen like this will appear:
Select Protocol and click add.
Then a screen like this will appear:
Select Microsoft, then TCP/IP. Click ok. You
may be prompted for a Windows CD or use C:\Windows\options\cabs.
This will rebuild the TCP/IP Stack.
For Windows 2000 I would not recommend to do unless you feel the need to. Refer to the Microsoft Knowledge Database - for explaining how to troubleshoot TCP/IP.
Windows XP is a little easier, their is a repair option under the support tab on the Status Screen. (See Below)
If you are still unable to resolve DNS, you may want to contact you Computer Manufacturer or even Microsoft.