intermittent dns error dialup

  • Thread starter Thread starter Wayne Harper
  • Start date Start date
W

Wayne Harper

(using dialup)
I havent seen any info on my exact problem. what happens is when
surfing, occasionally I get "dns error" (either in IE or mozilla) then
if I IMMEDIATELY retry, it works ok.
this doesnt happen with my win98 laptop using the same ISP.
-Wayne
 
is this the wrong group for this question? I have been trying to solve
this for months.
-Wayne
 
is this the wrong group for this question? I have been trying to solve
this for months.
-Wayne

Wayne,

Do both the Windows 98 and Windows XP computers have the same DNS setup? Any
DNS caches on either? What is in the Hosts file (in
"C:\WINDOWS\system32\drivers\etc" on XP, "C:\WINDOWS" on 98 I believe) on each?

When you get this problem, do you check that website then with the Windows 98
computer? Do you ever surf from the Windows 98 computer first?

Is there any pattern to the intermittent nature of the problem? Any specific
websites?

Maybe something about the DNS servers? Are they maybe timing out for some
reason? Try pinging them repetitively, using something like PingPlotter (free)
from <http://www.pingplotter.com/>, and see if there's any change in ping times
when this problem pops up again.

--
Cheers,
Chuck
Paranoia comes from experience - and is not necessarily a bad thing.
My email is AT DOT
actual address pchuck sonic net.
 
Chuck,
How would I find out if there are dns caches?
The hosts files are essentially the same.
How do I find out the DNS server in order to ping it?

I cant reproduce this problem, what will happen is that the win xp will
give a dns error for a site, but then be able access it ok when I
immediately retry the site. then it will be ok for a few more sites ,
then another error.
I cant really see any pattern to it.
Thanks,
-Wayne
 
Chuck,
How would I find out if there are dns caches?
The hosts files are essentially the same.
How do I find out the DNS server in order to ping it?

I cant reproduce this problem, what will happen is that the win xp will
give a dns error for a site, but then be able access it ok when I
immediately retry the site. then it will be ok for a few more sites ,
then another error.
I cant really see any pattern to it.
Thanks,
-Wayne

Wayne,

Those were questions off the top of my head, to try and get an idea what to look
at first. An intermittent problem like you're describing would be either
something flaky in the LSP/Winsock layer on the computer, or an intermittent /
timing problem with the DNS servers that are (probably) provided by your ISP.

If the problem is the former, then we would look for software on the computer,
maybe something doing DNS caching or similar.

If the problem is the latter, then the question would be why the Windows XP
computer (I'm supposing that the problematic computer is running Windows XP
since this is a Windows XP forum) would exhibit these problems, and the Windows
98 computer wouldn't.

How much surfing do you typically do, relative to each computer? How much
surfing to different / new sites, as well as to sites that you visit a lot? On
each computer?

If your problem reported a DNS error relative to site X, and after seeing this
error, you went to the Windows 98 computer and successfully pulled up site X,
this MIGHT be because the DNS server had just cached the address for site X
after it was requested by the Windows XP computer, not because there was a
problem with the Windows XP computer (with apparently no problem with the
Windows 98 computer).

Let's look at the ipconfig information for each computer.
Start - Run - "cmd" - Type "ipconfig /all >c:\ipconfig.txt" into the command
window. Open Notepad, make sure that Format - Word Wrap is NOT checked!, open
file c:\ipconfig.txt, copy and paste entire contents into your next post.

DNS resolution is affected by the LSP / Winsock subsystem.
http://support.microsoft.com/?id=318584
http://support.microsoft.com/?id=811259

If XP RTM or Service Pack 1:
1. Backup and delete the following registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock2
2. Reboot.
3. Open the network connections folder, right click your network connection, and
click Properties.
4. Click Install | Protocol | Add.
5. Click "Have Disk...", type "\windows\inf" in the box, and click OK.
6. Click "Internet Protocol (TCP/IP)", then click OK.
7. Reboot.

If XP SP2:
1. Start - Run - "cmd".
2. Type "netsh winsock reset catalog" into the command window.

Give LSP-Fix <http://www.cexx.org/lspfix.htm>, WinsockFix
<http://www.tacktech.com/display.cfm?ttid=257>, or WinsockXPFix
<http://www.spychecker.com/program/winsockxpfix.html> a shot.

If no help yet, reset TCP/IP.
http://support.microsoft.com/?id=299357

Start - Run - "cmd". Type "netsh int ip reset c:\netsh.txt" into the command
window.

BTW, Wayne, posting your email address openly will get you more unwanted email,
than wanted email. Learn to munge your email address properly, to keep yourself
a bit safer when posting to open forums. Protect yourself and the rest of the
internet - read this article.
http://www.mailmsg.com/SPAM_munging.htm

--
Cheers,
Chuck
Paranoia comes from experience - and is not necessarily a bad thing.
My email is AT DOT
actual address pchuck sonic net.
 
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