Not resolving DNS

Suddenly, my computer will not resolve DNS. When I ping
any address using the number address, my computer returns
the correct web page. However, when I use the name in
explorer, it will not return a page. I have checked the
firewall; no firewall is checked. Any help?

Al

On Thu, 24 Jun 2004 16:02:35 -0700, "Al" <anonymous@discussions.microsoft.com>
wrote:

>Suddenly, my computer will not resolve DNS. When I ping
>any address using the number address, my computer returns
>the correct web page. However, when I use the name in
>explorer, it will not return a page. I have checked the
>firewall; no firewall is checked. Any help?
>
>Al

Al,

First, try repairing your LSP / Winsock.
<http://support.microsoft.com/?kbid=811259>
LSP-Fix and WinsockLSPFix <http://www.cexx.org/lspfix.htm>

Search your entire system drive, including hidden and system folders, for file
"hosts". There is one legit copy, in C:\WINDOWS\system32\drivers\etc\. The
others are possibly bogus, and part (but just part) of the problem. Examine the
contents of each copy found, using Notepad. (HINT: Scroll to the end of each
Hosts file, by hitting Ctrl-End, then back up to the top, page by page, before
deciding that the file is empty. Look out for blank lines at the beginning and
end of the file, after localhost, placed there by an exploit!)

If it's not a corrupt LSP / Winsock, or a dns (hosts file) hijack, I'd do a
comprehensive spyware / virus check.

How current is your virus protection? Try one or more of these free online
virus scans, which should complement your current protection:
<http://www.bitdefender.com/scan/license.php>
<http://www.pandasoftware.com/activescan>
<http://www.ravantivirus.com/scan/>
<http://security.symantec.com/ssc/home.asp>
<http://housecall.trendmicro.com/housecall/start_corp.asp>

Now check for, and learn to defend against, additional problems.

Start by downloading each of the following free tools:
CWShredder <http://www.majorgeeks.com/download4086.html>
CoolWWWSearch.SmartSearch (v1/v2) MiniRemoval
<http://www.safer-networking.org/minifiles.html>
HijackThis <http://www.majorgeeks.com/download.php?det=3155>
LSP-Fix and WinsockLSPFix <http://www.cexx.org/lspfix.htm>
Spybot S&D <http://www.safer-networking.org/index.php?page=download>
Stinger <http://us.mcafee.com/virusInfo/default.asp?id=stinger>

Install and run Stinger.
<http://us.mcafee.com/virusInfo/default.asp?id=stinger>

Create a separate folder for HijackThis, such as C:\HijackThis - copy the
downloaded file there. Spybot S&D has an install routine - run it. The other
downloaded programs can be copied into, and run from, any convenient folder.

Start by closing all Internet Explorer and Outlook windows, and running
CoolWebSearchSmartKiller, then CWShredder. Have the latter fix all.

Next, run Spybot S&D. First update it ("Search for updates"), then run a scan
("Check for problems"). Trust Spybot, and delete everything ("Fix Problems")
that is displayed in Red.

Then, run HijackThis ("Scan"). Do NOT make any changes immediately. Save the
HJT Log.
<http://forums.spywareinfo.com/index.php?showtopic=227>

Finally, have your HJT log interpreted by experts at one or more of the
following forums (and post it, or a link to your forum post, here):
<http://forums.net-integration.net/>
<http://forums.spywareinfo.com/>
<http://spywarewarrior.com/index.php>
<http://forums.tomcoyote.org/>
<http://www.wilderssecurity.com/>

If removal of any spyware affects your ability to access the internet (some
spyware builds itself into the network software, and its removal may damage your
network), run LSP-Fix and / or WinsockXPFIx.

Chuck
Paranoia comes from experience - and is not necessarily a bad thing.