Ubuntu DNS Error Chrome: DNS_PROBE_FINISHED_NXDOMAIN, Firefox similar

Question

I am unable to visit most sites online in either firefox or chrome. I can access google docs so I am researching on windows 7 (dualboot) and rebooting into Ubuntu (recently upgraded to 16.04).

Test 0:

$ sudo /etc/init.d/dns-clean
$ 

(nothing happened)

Test 1:

$ dig microsoft.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> microsoft.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2944
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;microsoft.com.         IN  A

;; ANSWER SECTION:
microsoft.com.      896 IN  A   104.43.195.251
microsoft.com.      896 IN  A   23.100.122.175
microsoft.com.      896 IN  A   23.96.52.53
microsoft.com.      896 IN  A   191.239.213.197
microsoft.com.      896 IN  A   104.40.211.35

;; Query time: 102 msec
;; SERVER: 2001:558:feed::1#53(2001:558:feed::1)
;; WHEN: Tue Aug 29 14:54:43 EDT 2017
;; MSG SIZE  rcvd: 122

Test 2:

$ ping reddit.com
connect: Network is unreachable

Test 3:

$ less /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

Test 4:

$ less /etc/NetworkManager/NetworkManager.conf 
[main]
plugins=ifupdown,keyfile,ofono
/#dns=dnsmasq

no-auto-default=D4:BE:D9:A6:2E:C1,

[ifupdown]
managed=false

Test 5: Chrome

This site can’t be reached
www.reddit.com’s server DNS address could not be found.

DNS_PROBE_FINISHED_NXDOMAIN

Test 6: Firefox

Server not found
Firefox can’t find the server at www.reddit.com.
Check the address for typing errors such as ww.example.com instead of www.example.com
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Edit: Almost forgot, this seems to have started after I tried installing PlayOnLinux the other day. I uninstalled it but the problems persist.

Any thoughts?

Re: possible duplicate question : dns_probe_finished_nxdomain error caused by Ubuntu dns_probe_finished_nxdomain error caused by Ubuntu I clearly state in my question that the solution posed in the other thread of clearing the dns cache does not resolve my issue.

Solution 1

Resolved: DNS_PROBE_FINISHED_NXDOMAIN in Linux

---

Step 1. Open terminal and add below command

sudo nano /etc/dhcp/dhclient.conf

Step 2. Now add below line in file

supersede domain-name-servers 8.8.8.8;

Now, save file

Step 3. Restart the network

sudo service network-manager restart

or

sudo systemctl restart NetworkManager.service

Refresh your page and done.🙂🙂🙂

Solution 2

For me it was flushing the dns cache that way:

sudo systemd-resolve --flush-caches

You can then check the statistics in order to make sure that your cache size is now zero.

sudo systemd-resolve --statistics

Solution 3

For me (Ubuntu 20.04), the only working solution was to add DNS servers of Google and OpenDNS.

I did it at computer level:

sudo vim /etc/resolv.conf

And added these lines (before other nameservers):

nameserver 8.8.8.8
nameserver 208.67.222.222
nameserver 4.2.2.2

This can be also done at router level (for all devices):

• Go to router management -> DNS -> Set primary DNS to 8.8.8.8 and secondary DNS to 208.67.222.222.

See https://linuxhint.com/opendns-vs-googledns/ for more info about choosing the DNS nameservers (and checking which server is faster in your location).

Solution 4

I am having the same issue. I have tried everything from all answers and none of these work for me. I am working right now on something which requires a lot of DNS updates and this completely blocks my work all the time. I have to go and look at the site on my phone / ipad to see if it is really working.

Is there any other possible solution ?

Solution 5

Restarting the router solved this problem for me.

View more solutions

Comments

[Peter Krauss]

Really solved (!)... What the possible cause? A trojan? An UBUNTU upgrade?

[vladkras]

Nope, I'm unlucky one

[Andrea Vacondio]

This solved the issue for me but it would be nice to have this solution explained... what supersede domain-name-servers 8.8.8.8; does?

[Mr.P]

solved here too :) @AndreaVacondio it sets your DNS to Google's public DNS

[lo tolmencre]

Does not work for me. Kubuntu 20.04 going over a Netgear range extender. Normal Router has no problems to begin with.

[Nick S]

Accepted this answer as it looks like others were helped by it.

[Mostafa790]

not working for ubuntu 20.04

[Rahul]

Works like a charm !! anyone please explain...

[jobima]

It works! For some reason I had only: nameserver 127.0.0.53

[jobima]

Well: The file is dynamic (generated by systemd-resolved) so you loose your change! For some reason I only have: nameserver 127.0.0.53

[talz]

I know the asker said they did not experience that problem on windows so you might assume the problem can only be solved on the ubuntu system, but I only experienced the problem on one browser and not on another, and still restarting the router solved it.

[Tejas]

for ubuntu 20.04 it's working fine. Thanks @Filip Kunbicz

[Tejas]

for ubuntu 20.04 run below command ` sudo vim /etc/resolv.conf ` If above does not work run ` sudo nano /etc/resolv.conf ` Add below name servers to file and refresh the page will work fine. ` nameserver 8.8.8.8 nameserver 208.67.222.222 nameserver 4.2.2.2 `