Network Diagnostics. The DNS Server isn't responding; Not able to connect to the internet, network, wireless.

Question

I'm running Windows 7, SP1, Comodo Internet Security, I started the system as usual and found that I was Unable to connect to the internet, network, or wireless. The Windows Networks Diagnostics, Problem Found "The DNS Server isn't Responding." The TCP/IP, and all Nic Configuration are correct. Not using DHCP. But when I try to use it, it does not respond, returning the same error "The DNS Server isn't responding".

The antivirus software does not detect any virus. But when trying to create a folder, I get an access denial, admin privileges needed.

So perhaps I got a virus the the antivirus does not recognize.

I try using the following command with not success:

1. SFC /SCANNOW

2.  netsh int ip reset c:\resetlog.txt

3. ipconfig /flushdns
4. System Restore to a previous working date, but get an error stating unable to restore system
5. Try running the commands in safe mode with network, but get admin rights error.

I ran out of options to try.

I appreciate all the help provided by the community, so please feel free to add your advice.

Thanks!😇

Answer 1

If you don't know, Ping but you know the URL address e.g. WWW.google.com, you could ping to this address, you will get the IP of this site and the time as well.

When you Ping the URL Address the reply command involve an extra step, this is to resolve the URL address to IP address.

This is one features that most IT professional use when they don't know the the IP number of the site they want to look for. 

Sorry, my friend, I have no intention of being lectured on the very basics of IP address resolution. What you write is a classic example of someone trying to teach his grandmother how to suck eggs. Since you feel that you need to tell me how IP address resolution works I recommend you ask the real experts in a networking group for advice. I gave you the address of their forum in my previous reply.

Answer 2

Hi Frederik,

The Ping command could is able to ping both ways. You could ping to any live IP address number and the reply back from that node will give you the same IP address and the time.

If you don't know, Ping but you know the URL address e.g. WWW.google.com, you could ping to this address, you will get the IP of this site and the time as well.

When you Ping the URL Address the reply command involve an extra step, this is to resolve the URL address to IP address.

This is one features that most IT professional use when they don't know the the IP number of the site they want to look for.

Regarding these IPs: DNSs: 75.75.75.75, and 75.75.75.76, they are the DNS IPs provided for my business Internet connection.....COMCAST Business DNS IP Address.

Using a Public DNS IP, is not recommended for a business because these DNSs are very heavy handling every one else traffic. These private DNS IP can only serve business subscribers.

I try using Public DNS, but the error I'm getting is from my Laptop DNS Server not responding as I mentioned above in the thread. So when you have this type of problem, changing DNS IP, does not make any different, because the problem is that the DNS Server of my Laptop, is not responding at all. If I would use any other, the DNS Server application is not working in order to use it.

What I want to fix is the DNS Server Application native to Windows 7.

Answer 3

DNSs: 75.75.75.75, and 75.75.75.76

-> Where do these addresses come from?

-> What happens when you use an OpenDNS address: 208.67.222.222

But, when I try to ping outside into the cloud (The Internet), like www.google.com, or www.bing.com, I'm not able to do so. For google, I should had got 173.194.64.105, with the reply time, and for bing I should had got 204.79.197.200.

-> You should now ping these sites by IP address instead of by name.

Answer 4

Hi Frederik,

Thanks for your reply to my post! I appreciate that you had taken your time to help.

I will try to answer your question in more detail:

1. The TCP/IP Address are correct and they are as follow:

IP: 192.168.3.48

MASK: 255.255.255.0

GATEWAY: 192.162.3.1

DNSs: 75.75.75.75, and 75.75.75.76

These correspond to my network setting schema for the router and they are static, no DHCP, running.

The TCP/IP, is working fine, I'm able to ping the router by it's gateway IP, and any other node in the network.

But, when I try to ping outside into the cloud (The Internet), like www.google.com, or www.bing.com, I'm not able to do so.

For google, I should had got 173.194.64.105, with the reply time, and for bing I should had got 204.79.197.200.

The Windows Networks Diagnostic error is The DNS Server isn't Responding.

But as long as i don't try to get to the internet, the rest of the internal network nodes are visible.

The rest of the other computers are able to browse the internet, but my Laptop.

I hope I provided additional details to clarify my initial post.

I you have any suggestions, after this post, please feel free to answer, if you need further information, please let me know.

Once again, Thanks for taking time to assist with this issue. 😊

Answer 5

Although you write "the TCP/IP and NIC configuration details are correct", you do not say what they are and what makes you think that they are correct. I recommend that you report them in detail when reposting your question in a networking forum.