server DNS address could not be found

I've very serious issue with my system or network, some of the websites doesn't open and it's just displaying server DNS address could not be found

I've tried to change DNS settings with Google public DNS:

Preferred DNS server : 8.8.8.8 
Alternate DNS server : 8.8.4.4

And with open DNS:

Preferred DNS server : 208.67.222.222 
Alternate DNS server : 208.67.220.220

Also tried with following commands:

ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew
NETSH winsock reset catalog
NETSH int ipv4 reset reset.log
NETSH int ipv6 reset reset.log

And lot more things. But could not find solution any! I've also refereed :

Chrome gets stuck on “server DNS address could not be found” if I tried to access a domain while connecting

“DNS server address couldn't be found” for some websites

Site can't be reached- server DNS address could not be found

But no luck so far, can anyone let me know, what is the issue and how can I resolve it?

Updated:

Sites are not working on my system are:

https://cdnjs.cloudflare.com/ajax/libs/remarkable/1.7.1/remarkable.min.js

https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react-dom.js

https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react.js

https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js

I've checked with my another system which has fresh OS installed, and this all sites are working perfectly on it.

Moreover, I've checked wit uninstall my antivirus, but It couldn't solve my issue.

Div

Posted 2017-08-05T10:30:35.610

Reputation: 125

Is the problem always the same websites? – harrymc – 2017-08-05T10:58:02.620

@harrymc: yes with same websites, in addition CDN URLs doesn't load from any website. – Div – 2017-08-05T11:45:38.927

What happens if you : (1) disable your firewall, (2) use another browser. – harrymc – 2017-08-05T12:14:26.413

@harrymc: Disabled firewall and checked with Firefox. Its displaying Server not found Firefox can’t find the server at cdnjs.cloudflare.com. – Div – 2017-08-05T12:17:06.797

1The problem might not be on your side but with the websites you are trying to reach, or even with some firewall between you and these websites. If you could give me some URLs that don't work for you, I can try them from here. And which country are you in? – harrymc – 2017-08-05T12:44:55.397

1(1) Returns a ,js file so the problem might be with the cloudflare server in India, (2) Firefox can’t find the server at node-iltorb.s3.amazonaw so this site has a real problem. – harrymc – 2017-08-05T12:57:32.543

Answers

The poster has shown two URLs that he is unable to accede and which I tried from here (Europe):

The first URL was a cloudflare address that worked for me, so might indicate a problem with the cloudflare server in India or its cache.
For the second URL I got the error "Firefox can’t find the server at node-iltorb.s3.amazonaw", so this site has a real problem and was down when I tried.

The problem can also be on your side, where the usual responsible is the anti-virus or other security software. Booting in Unsafe mode with Network is a quick way of telling if the problem is caused by a non-Microsoft product.

harrymc

Posted 2017-08-05T10:30:35.610

Reputation: 306 093

Okay, I've checked with my another system, which has fresh OS installed and that sites working with it. Seems issue with system... – Div – 2017-08-06T06:01:59.737

I would suggest a problem with the antivirus. – harrymc – 2017-08-06T06:44:27.370

Try to boot in Unsafe mode with Network. That will tell if the problem is with a non-Microsoft product. – harrymc – 2017-08-06T08:54:24.293

Done as requested. – harrymc – 2017-08-10T07:52:38.867

Server DNS address could not be found

Try reinitialising the network states. Run the following commands in an elevated cmd shell in this order:

Reset WINSOCK entries to installation defaults:

netsh winsock reset catalog
Reset TCP/IP stack to installation defaults:

netsh int ip reset reset.log
Reset Firewall to installation defaults:

netsh advfirewall reset
Flush DNS resolver cache:

ipconfig /flushdns
Renew DNS client registration and refresh DHCP leases:

ipconfig /registerdns
Flush routing table (reboot required):

route /f

DavidPostill

Posted 2017-08-05T10:30:35.610

Reputation: 118 938

Tried with as you mentioned with an order and rebooted too!! but still it's displaying the same thing. – Div – 2017-08-05T11:53:01.957