Solved

Computer keeps losing DNS?

Posted on 2007-12-05
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Last Modified: 2008-04-16
Hello all,

I'm at my wits end here.  My machine will randomly stop allowing me to surf the internet.  I'm not quite sure what to check next, so here I am looking for any other ideas.

Here's what I have:
Currently running Server 2003 x64.  Previously running XP x32 on an older motherboard with a different NIC.  Computer is running VMWare 5.5.5 which is used for my work and development machines.

Here's what's happening:
At various times throughout the day, I will not be able to get out to google.com (for example, no web sites will load).  I am able to ping google.com from a command prompt and get responses.  When I run nslookup I get this:
C:\Documents and Settings\chris>nslookup google.com
*** Can't find server name for address 192.168.1.1: Non-existent domain
Server:  UnKnown
Address:  192.168.1.1

Non-authoritative answer:
Name:    google.com
Addresses:  64.233.167.99, 64.233.187.99, 72.14.207.99
This was happening both under XP and with 2003.  At the same time that I can't access google.com, I can go into one of my virtual machines and surf without issue.

I've searched for similar problems and tried the recommended solutions to no avail.  I've looked through the event logs, but am not seeing anything that stands out as a problem.

Also, it's intermittent and will correct itself in 5-10 minutes.  And it fails in both IE and Firefox.

Anyone know of anything else I can check or look for.  I'm not running any firewall software currently.  If a list of software loaded would help, I can provide that.

Thanks!
chris.

(also, I'm not quite sure which zone would be best for this.  so many choices.  if there is a better zone than the one(s) I've selected, please let me know)
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Question by:cciesliga
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7 Comments
 
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Expert Comment

by:abspm24
ID: 20417662
Hi,
I think its a hardware problem, try changing nic or your network cable, I had similar issues with linux box, changing hardware worked well
AB
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Author Comment

by:cciesliga
ID: 20420152
I've just now replaced the ethernet cable.  I don't think hardware is the culprit though because when I experience the "outages" on the main PC, the virtual machines running on the main PC are still able to browse out correctly.  Plus, I've just recently upgraded my machine and it's running with a new motherboard.  So, the onboard NIC has been changed.  Yet I'm getting the same symptoms as before.

Also, I'm still able to ping the site from the main PC.  It's just the DNS that appears to be failing.  If it was hardware, I'd expect to see the same failures on the virtual machines.
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Expert Comment

by:-Mystique-
ID: 20448173
Below are some links to pages of discussions of DNS problems, tools, online dns tests, and other helpful information.

I don't know what your router is, but you may find helpful information on your router manufacturer's homepage.  I once had a problem a few years ago with a pc similar to what you describe, and I solved it by setting the router so that the pc used the router's DNS which fixed the problem.

Much advice on this page for tracking down and resolving DNS issues
Cable Modem Troubleshooting Tips
http://homepage.ntlworld.com/robin.d.h.walker/cmtips/dnsname.html

Prevent DNS problems with this tip for Windows XP
http://www.updatexp.com/dns-windows-xp.html

My XP system keeps losing its DNS settings
http://forums.tweaktown.com/archive/index.php/t-17569.html

http://www.pcreview.co.uk/forums/thread-1470242.php
pc losing ability to resolve dns

PC World forum discussion on pc losing dns
http://pressf1.co.nz/archive/index.php/t-48147.html

Fixing DNS problems
http://209.197.82.28/2003/01/13/how_to_dns_fix/

ComputerWorld fixing dns problems
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9020261

PC World dns problems search results
http://www.pcworld.com/search/results?col=reviews&qt=dns+problems&sort=date#
Also at this page are links to testing and tools sites
Free Online DNS Testing Tools
http://member.dnsstuff.com/pages/dnsreport.php
http://www.seoconsultants.com/tools/dns/

There may be information at one of the below links that may also help you.http://forums.linksys.com/linksys/board/message?board.id=Wired_Routers&message.id=13551
http://search.techrepublic.com.com/search/DNS.html?t=9&s=0&o=0
http://forums.opendns.com/comments.php?DiscussionID=480
http://techrepublic.com.com/5208-1035-0.html?forumID=101&threadID=244494
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Author Comment

by:cciesliga
ID: 20536867
Thanks Mystique for the links.  Unfortunately, I wasn't able to resolve the problem with any of the information presented.

As it is intermittent and only fails for about 5 minutes at a time, it's very difficult to troubleshoot.
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Accepted Solution

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cciesliga earned 0 total points
ID: 20576595
I ended up line by lining the settings between this 2k3 server and one of my virtual machines.  There were a few services running on one that weren't on the other.  Once I stopped or started those services, the system seems to be maintaining DNS settings now.
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by:Vee_Mod
ID: 20701394
Closed, 500 points refunded.
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