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Windows 7: The DNS server isnít responding

04 Feb 2013   #1

Windows 7 Ultimate 64-bit SP1
 
 
The DNS server isnít responding

Hello,

I have a problem with the internet connection. I can connect, but then it either is very slow or I get a 500 error or the server is found only after several trials, even if having given any error. Getright downloader gives a permanent 403 error, but it is wrong because files can sometimes be downloaded in otherwise after insisting.

I think I know what caused the problem. I had Comodo firewall installed for some time, but I uninstalled because I found it too much interfering. When I installed I made the mistake of accepting the offer of their DNS server protection, and it placed their IP address number on my TCP/IP settings (at ďUse the following DNS server addressĒ). That was worse because it replaced the sites or browsers error pages with their ad and useless information. When I uninstalled, this remained. Their forum has complaints about this. I searched for remaining files from Comodo and cleared them, as well as their IP address entry on TCP/IP settings. This is all I did, maybe not enough. After this I started having the mentioned internet connection problems.

I used the OS Internet connection troubleshooter. It did not solve anything, but at the end sent this notice:
The DNS server isnít responding
Your computer is trying to use a DNS server that is incorrect or doesnít exist.


Where is that setting that is incorrect or does not exist? I have a dynamic IP, but it doesnít change much. This is a single computer with a direct DSL connection.

I also tried the internet troubleshooter at MS FixIt center. No way.
Then, I used the commands ipconfig /flushdns and ipconfig /release at command prompt.

Then, following the instructions found on MS's KB-299357 for the manual method, I used the command netsh int ip reset c:\resetlog.txt, and rebooted. No change. I didn't find any text file.

I searched MS answers forums, found one similar issue, but none of them solved. In this forum there are lots of DND cases, but none like mine. The issue remains and the OS troubleshooter keeps showing the same DNS error notice

I could reinstall an image from less than two weeks ago. That would probably solve the DNS issue, but would bring back the undesirable Comodo interferences.

How can I do to solve the issue without getting them back, please?

My System SpecsSystem Spec
.

04 Feb 2013   #2

Windows 7 Pro. 64/SP-1
 
 

To double check things you have already done this little Tutorial might help.
IP Address - Change Automatically
My System SpecsSystem Spec
04 Feb 2013   #3

Windows 7 Ultimate 64-bit SP1
 
 

Thank you Layback Bear. It didn't work,sorry.

Something I had already noticed since the issue started is that some sites have more difficulty to load on any browser, like Wikipedia, and a few do not load at all, their name appears on the top left corner of the browser like a message. Getright keeps giving a 403 error. There must be a way to fix this stupid thing.

Edit
The name of the network connection to use for the batch file name is "Local Area Network", I used it just as this. Does the file name need to be in quotes? In the XP time the OS didn't recognize long names.
My System SpecsSystem Spec
.


04 Feb 2013   #4

Windows 7 Professional 32bit
 
 

Had a similar issue with a friend recently. Ended up having to call her ISP and configure her modem/router to use a static DNS server, rather than obtain it automatically.
My System SpecsSystem Spec
04 Feb 2013   #5

Windows 7 Ultimate 64-bit SP1
 
 

Hi Cancerous,

That might work, but I can't get a static DNS from my ISP, and as I have maybe the cheapest fare with unlimited trafic and medium speed (24 Mbi, actually a little over a half – see my specs) I am not wishing to change. So I have to try another way. Thanks for the good idea, even if I am not in a position to follow.
My System SpecsSystem Spec
04 Feb 2013   #6

Windows 7 Pro. 64/SP-1
 
 

The Comodo firewall could of done all kinds of things that we will never know. Their are some basic things that can be done that may or may not help. They are built into Windows and should not hurt anything.

SFC /SCANNOW Command - System File Checker

System Restore
My System SpecsSystem Spec
04 Feb 2013   #7

Windows 7 Professional 32bit
 
 

Quote   Quote: Originally Posted by Neophile View Post
Hi Cancerous,

That might work, but I can't get a static DNS from my ISP, and as I have maybe the cheapest fare with unlimited trafic and medium speed (24 Mbi, actually a little over a half Ė see my specs) I am not wishing to change. So I have to try another way. Thanks for the good idea, even if I am not in a position to follow.
You're not getting a new service, you're just putting your ISP's DNS details in to the modem instead of having it resolve by itself.
You should be able to get their DNS address by a quick google search "ISP DNS address". Put the primary and secondary in to your modem configuration.
My System SpecsSystem Spec
04 Feb 2013   #8

Windows 7 Professional 64bit SP1
 
 

Have you tried to just enter a new DNS primary/secondary address and see if your internet works properly? If you click on Local Area Network, then click on the Properties tab at the bottom left, then double click on Internet Protocol Version 4, change from "Obtain DNS server address automatically" to "Use the following DNS server address" and type these addresses in: Primary: 8.8.8.8 Alternate: 8.8.4.4

After that, click OK and exit out.....I always reboot and then go back and see if it took the changes. Try to see if your internet works any better. BTW, those particular DNS addresses are Google, so you don't have to worry about it......it's safe.
My System SpecsSystem Spec
04 Feb 2013   #9

Windows 7 Ultimate 64-bit SP1
 
 

The scan gave this result:
Windows Resource Protection found corrupt files but was unable to fix some of th
em.


I think I have to start here. Yes, the Comodo firewall interferes to much with the system, that's why I installed it, but could never get completely rid of it.

I'll have to continue tomorrow late, no time until then. Thank you all.
My System SpecsSystem Spec
04 Feb 2013   #10

Windows 7 Pro. 64/SP-1
 
 

Did you run sfc /scannow 3 times with boots between each. If you did and it still can't repair it my next thoughts would be repair install. Please read all and understand before doing.

Repair Install
My System SpecsSystem Spec
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