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Error Webpages, no online functions - ISP, server, router?

By MtnRunner ·
This has been defying my corrective actions for two days. This happened very suddenly. Whenever we use IE7 or any online function, we get a Comcast page saying we need to set our TCP/IP setting to "Obtain DNS server address automatically". Our settings have always been that. We use SBS 2003 as DNS and DHCP, and have 7 PC's XP Pro and the one server behind a switch, router, modem. I called Comcast, they said it looked fine from their point. I called Linksys (router), there was no problem, all settings are correct. I replaced the router and configured it as it had been, we briefly - two minutes - had internet, then it went back to the Comcast error page. Also, I can plug a laptop directly into the modem and have no problem getting internet. Also, if I take the network off the router and only connect one PC, it works fine. Thanks for any help!

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This really sounds as if it's a Router Setting

by OH Smeg In reply to Error Webpages, no online ...

How about reentering the Routers Setup and changing back to the defaults then resetting it with only the basic settings. Reboot the router and then see if it works now. If it does continue to make one change at a time till it is either fully set to your Security Level or it stops working.

Then the last change that you made is the problem and you can workout what is required from there.

Of course I'm assuming here that the cables between the Modem, Router and switch are all OK and not damaged. Doesn't sound as if they are but hitting them with a cable tester may show something interesting like a Crossover Cable or something like that.

Col

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A few things to try out....

Repairing Damaged Winsock2
The symptoms when Winsock2 is damaged shows when you try to release and renew the IP address using IPCONFIG.
And you get the following error message:
An error occurred while renewing interface 'Internet': An operation was attempted on something that is not a socket.
Also Internet Explorer may give the following error message:
The page cannot be displayed Additionally, you may have no IP address or no Automatic Private IP Addressing (APIPA) address, and you may be receiving IP packets but not sending them.
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If you have WindowsXP with Service Pack 2, there is a one line command you can run to reset the winsock2 registry entries
netsh winsock reset catalog
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There are two easy ways to determine if Winsock2 is damaged:
From the XP source files, go to the Support / Tools directory
Winsock Test Method 1

Run netdiag /test:winsock
The end should say Winsock test ..... passed
Winsock Test Method 2

1.Run Msinfo32

2.Click on the + by Components

3.Click on the by Network

4.Click on Protocol

5.There should be 10 sections if the Winsock2 key is ok
MSAFD Tcpip [TCP/IP]
MSAFD Tcpip [UDP/IP]
RSVP UDP Service Provider
RSVP TCP Service Provider
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
If the names are anything different from those in this list, then likely Winsock2 is corrupted and needs to be repaired.
If you have any 3rd party software installed, the name MSAFD may be changed.
There should be no fewer than 10 sections.
.......................................
To repair Winsock2

1.Run Regedit

2.Delete the following two registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock2

3.Restart the computer

4.Go to Network Connections

5.Right click and select Properties

6.Click on the Install button

7.Select Protocol

8.Click on the Add button

9.Click on the Have Disk button

10.Browse to the \Windows\inf directory

11.Click on the Open button

12.Click on the OK button

13.Highlight Internet Protocol (TCP/IP)

14.Click on the OK button

15.Reboot
...........................................

If you've found yourself hitting DNS errors or 404 pages in your browser but you know your net connection is working fine, it might be time to flush and restart Windows' DNS cache. The How-To Geek shows how to do this in three command line entries, although you might only need the first to see results. After launching a command prompt as an administrator and closing down Firefox (which has its own DNS cache), enter the following:

ipconfig /flushdns
net stop dnscache
net start dnscache


An easier and quicker way of doing this in XP is to:
1) go to Start
2) go to Run
3) Type: services.msc
4) click Enter.
5) Then locate "DNS Client"
6) Right click on it.
7) From there, click Restart
....................................................................................

Put into a .bat file.
@echo off
echo .*** RUNNING IPCONFIG /FLUSHDNS ***
pause
ipconfig /flushdns
echo .*** STOP THE DNS CACHE ***
pause
net stop dnscache
echo .*** START THE DNS CACHE ***
pause
net start dnscache
Or:

@echo off
echo .*** RUNNING IPCONFIG /FLUSHDNS ***
ipconfig /flushdns
echo .*** STOP THE DNS CACHE ***
start /wait net stop dnscache
echo .*** START THE DNS CACHE ***
pause
net start dnscache
That way no pauses, and start /wait forces the batch file to wait until the net stop dnscache finshes before trying to start it

............................................................................................

Commandline-ophobes can also right-click on the connection, either in the Network Connections control panel applet or in the taskbar (if you have it set to always display there), and choose "Repair".
In addition to flushing the DNS cache, this renews the DHCP lease, flushes the NETBIOS cache, and reregisters NetBIOS and IP address with WINS.
.........................................................................................................................

Please post back if you have any more problems or questions.

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on PC or server?

by MtnRunner In reply to A few things to try out.. ...

thanks, I gave you a thumbs up even if it doesn't fix it ... would I do this to the server? Its not likely that this happened to seven PC's simultaneously, is it?

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It might if there is a connection problem with the outer..

The only way is to try it out and see, it will do no harm, as long as you know what you are doing. You can do it on both the PC's and server.

Please post back if you have any more problems or questions.

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XP source files?

by MtnRunner In reply to A few things to try out.. ...

where are "XP source files" you mention, to go to Support / Tools to do Winsock Test method 1

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This will be on your Windows disk.

Put in your windows disk, wait for it to load, then cancel the install. Now go into "my computer" and right click on your disk in your cd/dvd drive and select "open", this will open your disk with different files being on display. Go to "Support" file and inside there will be the "tools" file. Inside will be the file you will be interested in, it will be "suptools". Hope this helps you.

Please post back if you have any more problems or questions.

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thanks

by MtnRunner In reply to This will be on your Wind ...

I'll try this, I try to post back and say whether the help has fixed things, but this is going to take some time so I don't know it I'll have time; thanks again for your help though

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so far all okay

by MtnRunner In reply to A few things to try out.. ...

I installed all of the support tools and the winsock tests are all okay so far

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Then the only option is the DNS ...

Have you checked your DNS settings, these might be out and if they are you will need to reset.

Please post back if you have any more problems or questions.

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