[Guru level] DNS problem with Windows XP SP2

[Guest]

Hello,

I have the following networking problems with WinXP SP2 :

I can ping an IP adress on my LAN or over the Internet.
I cannot ping a domain over the Internet.

A connection with telnet on port 80, in with IE or Firefox on a webserver
works with an IP, but not with a domain.

IP address and DNS are setup automatically with DHCP.

A nslookup query works fine !! (even when I flush the dns cache)

I reset winsock (winsockXPFix / netsh winsock reset
catalog) and TCP/IP (netsh int ip reset) but it doesn't change anything.

The hosts file is correct, and if I add manually an entry it works.

Thanks for any pieces of advice,

Erwan.

 

[Chuck]

Hello,

I have the following networking problems with WinXP SP2 :

I can ping an IP adress on my LAN or over the Internet.
I cannot ping a domain over the Internet.

A connection with telnet on port 80, in with IE or Firefox on a webserver
works with an IP, but not with a domain.

IP address and DNS are setup automatically with DHCP.

A nslookup query works fine !! (even when I flush the dns cache)

I reset winsock (winsockXPFix / netsh winsock reset
catalog) and TCP/IP (netsh int ip reset) but it doesn't change anything.

The hosts file is correct, and if I add manually an entry it works.

Thanks for any pieces of advice,

Erwan.

Erwan,

Do you have other computers on your LAN, with no such problem? Do the other
computers have the same DNS servers listed in "ipconfig /all"?

Is this problem constant on this computer, and affecting all websites?

By "cannot ping a domain", do you mean a ping by URL returns "unknown host"?
Against a URL tested from another computer?

Does your problem computer have a personal firewall?

Please post "ipconfig /all" from the problem computer, and one other, so we can
diagnose the problem. Read this article, and linked articles:
<http://nitecruzr.blogspot.com/2005/05/troubleshooting-network-neighborhood.html#AskingForHelp>
http://nitecruzr.blogspot.com/2005/05/troubleshooting-network-neighborhood.html#AskingForHelp

And enumerate your LSP / Winsock for clues:
<http://nitecruzr.blogspot.com/2005/05/problems-with-lsp-winsock-layer-in.html>
http://nitecruzr.blogspot.com/2005/05/problems-with-lsp-winsock-layer-in.html

 

[Guest]

Thank you very much for this answer which pleases me !

I don't explain all tested, only the solution :

Does your problem computer have a personal firewall?

I guess you pointed the problem, there was Norton Symantec, but it had been
"desactivated" manually (and it probably matches with the date the Internet
problems). By manually I mean all services related to Norton Symantec were
stopped and desactivated (not any uninstall option anywhere). I relaunch the
whole set of Norton services but is doesn"t solves the problem. Probably the
winsock's fix broke the "Internet threw norton" connectivity. Now, the
Windows FW is activated (I also asked for the windows FW default parameters).

I finally download and run Norton Removal Tool 1.20.4 and it did the trick !!

Thank you very much for your blog which is a real reference,

Best regards,

Erwan.

 

[Chuck]

Thank you very much for this answer which pleases me !

I don't explain all tested, only the solution :

I guess you pointed the problem, there was Norton Symantec, but it had been
"desactivated" manually (and it probably matches with the date the Internet
problems). By manually I mean all services related to Norton Symantec were
stopped and desactivated (not any uninstall option anywhere). I relaunch the
whole set of Norton services but is doesn"t solves the problem. Probably the
winsock's fix broke the "Internet threw norton" connectivity. Now, the
Windows FW is activated (I also asked for the windows FW default parameters).

I finally download and run Norton Removal Tool 1.20.4 and it did the trick !!

Thank you very much for your blog which is a real reference,

Best regards,

Erwan.

That should do it, Erwan. Glad to help. Thanks for the feedback!

 

[Guest]

Thank you to Vincent and Chuck.

I have spent a good couple of days trying to resolve what I thought was a
DNS cache problem.The symptons were identical to and I was rapidly getting to
the conclusion that the only fix was a clean install of XP .....

Reading this post, I simply went to the "Add Remove Software", highlighted
Norton Systemworks and uninstalled it.

Interestingly the problem occured around the same time I started to receive
notice of 28 days subscription left on my Norton licence. Uninstalling it
meant I lost 25 days of subscription, but after that experience I am looking
for alternative virus scanning software!

Immediately after reboot, iTunes contacted the music store and I can now
flush and display the DNS cache
Thanks again
Paul

 

[Chuck]

Thanks for the feedback, Paul. Another black eye for Norton Systemworks.

Go with Avast or AVG, for free protection, or Kaspersky if you're prepared to
pay.