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DNS Lookup Failed


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#1 Gorgod

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Posted 25 June 2014 - 07:51 PM

Ok, so this problem has been plaguing my computer for a couple days now and is definitely starting to become annoying. So it all started when my computer froze. I mean, pretty rare for me, but when it does happen nothing usually happens after I restart it. However, this time, everything works fine, except that when I open my browser it says the DNS lookup has failed, and all other applications cannot connect to the internet. All other computers and devices in my house work fine, and I have tried almost everything. This actually has happened before, but was fixed with a simple system restore. Although this time, when I do a system restore there are no results. I did a virus scan multiple times on multiple programs, uninstalled any programs that seemed sketchy to me, restarted many many times, and tried doing all the fixes I could find for this on the internet, e.g. going into the network properties and changing the DNS address and all that jazz, and still nothing. Not to mention the normal DNS error found on my browser has now been replaced with a "web page not available" message. I am getting extremely desperate and am on the brink of bringing my computer to the local computer repairman. Any help would be greatly appreciated.

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#2 scotty_ncc1701

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Posted 26 June 2014 - 08:52 AM

The first thing to do, is to check your Internet connection.

1.  Go to the "Control Panel".
2.  Click on "Network and Sharing Center".
3.  Click on your wireless connection, if that's what your using.
4.  On the bottom, click on "Properties".
5.  Select the appropriate "Internet Protocol 6 (TCP/IPv6)
5.1.  Click Properties.
5.1.1.  Make sure that both are set to get the addresses automatically.
5.1.2.  Click OK.
6.  Repeat #5 for the (TCP/IPv4).
7.  Repeat the above for each hard wire connection.
8.  Reboot your computer.
9.  Attempt to see how things go.
10.  IF YOU'RE STILL HAVING ISSUES, CONTINUE ON.
11.  Turn off all computers.
12.  Hard reset the router, router/modem (combo).
12.1.  Somewhere on your  router, router/modem (combo), you should see a recessed button, slightly larger than a paperclip.
12.2.  Press and hold the button in for about 10-15 seconds.
12.3.  Let the router/modem (combo) cycle up.  DO NOT TURN ON THE COMPUTER YET.
12.4.  Turn on the computer, and see how it goes.

13.  If all the above fails, see if your ISP can help you.

It could be several items, but the above is the first to try.  As for my ISP, some times they have to "rebuild" (their term) the connection.  More or less, loosely speaking, it's like deleting (sort of) your connection record on their computers, and adding it back in.  In all the times I've help folks, when steps 1-9 were done, it normally resolves the issue.

Best of luck.


Edited by scotty_ncc1701, 26 June 2014 - 08:54 AM.


#3 Gorgod

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Posted 26 June 2014 - 05:52 PM

The first thing to do, is to check your Internet connection.
1.  Go to the "Control Panel".
2.  Click on "Network and Sharing Center".
3.  Click on your wireless connection, if that's what your using.
4.  On the bottom, click on "Properties".
5.  Select the appropriate "Internet Protocol 6 (TCP/IPv6)
5.1.  Click Properties.
5.1.1.  Make sure that both are set to get the addresses automatically.
5.1.2.  Click OK.
6.  Repeat #5 for the (TCP/IPv4).
7.  Repeat the above for each hard wire connection.
8.  Reboot your computer.
9.  Attempt to see how things go.
10.  IF YOU'RE STILL HAVING ISSUES, CONTINUE ON.
11.  Turn off all computers.
12.  Hard reset the router, router/modem (combo).
12.1.  Somewhere on your  router, router/modem (combo), you should see a recessed button, slightly larger than a paperclip.
12.2.  Press and hold the button in for about 10-15 seconds.
12.3.  Let the router/modem (combo) cycle up.  DO NOT TURN ON THE COMPUTER YET.
12.4.  Turn on the computer, and see how it goes.
13.  If all the above fails, see if your ISP can help you.
It could be several items, but the above is the first to try.  As for my ISP, some times they have to "rebuild" (their term) the connection.  More or less, loosely speaking, it's like deleting (sort of) your connection record on their computers, and adding it back in.  In all the times I've help folks, when steps 1-9 were done, it normally resolves the issue.
Best of luck.


I did everything except contact my ISP and even connected to my other wifi- still, when I try to get online it says the DNS lookup has failed. Should I try another system restore? Since both wifis do not work could it still be an issue with my ISP?

#4 JohnC_21

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Posted 26 June 2014 - 06:16 PM

"All other computers and devices in my house work fine"

 

I don't think it's your ISP.

 

In the search box type CMD then Right Click > Run as administrator

 

At the prompt type:

netsh winsock reset  <enter> 
 
netsh int ip reset c:\resetlog.txt   <enter> 

Reboot

 

This will reset Winsock and the TCP/IP stack.



#5 scotty_ncc1701

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Posted 26 June 2014 - 06:59 PM

Try what John said.  But I have two questions.

1.  Who is your ISP?
2.  What browser are you using?

One reference I found said, "DNS Lookup Failed is quite common when you are using Google Chrome. This issue commonly arises when the settings are incorrectly configured or the DNS server stops..."

Try what John said.  If it doesn't help, continue on.

You can force your computer to use other DNS.  Get to your connection, and change the primary and secondary DNS to (these are Google):

8.8.8.8
8.8.4.4

See if that works.

Best of luck.



#6 Gorgod

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Posted 26 June 2014 - 07:48 PM

Try what John said.  But I have two questions.
1.  Who is your ISP?
2.  What browser are you using?
One reference I found said, "DNS Lookup Failed is quite common when you are using Google Chrome. This issue commonly arises when the settings are incorrectly configured or the DNS server stops..."
Try what John said.  If it doesn't help, continue on.
You can force your computer to use other DNS.  Get to your connection, and change the primary and secondary DNS to (these are Google):
8.8.8.8
8.8.4.4
See if that works.
Best of luck.

1) My ISPs are time warner cable and AT&T. Primarily, though, I use time warner
2) I use Opera

Unfortunately, I have tried the whole 8.8.8.8 deal but I will try again just in case. Also, I'm not at home right now but when I get home I will definitely try John's suggestion

 

John's suggestion worked! Thanks so much to both of you for your suggestions and help.


Edited by Gorgod, 26 June 2014 - 08:08 PM.


#7 scotty_ncc1701

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Posted 26 June 2014 - 08:04 PM

Great to hear.  If my friends have issues again, I'll have John's suggestion to try also.  Actually will try it first, because it's much easier!

Have a great day!


Edited by scotty_ncc1701, 27 June 2014 - 07:04 AM.


#8 FrankDizzle

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Posted 20 July 2015 - 04:55 PM

John...lifesaver. Worked for me.

Edited by FrankDizzle, 20 July 2015 - 04:55 PM.


#9 rstaad

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Posted 24 March 2016 - 01:57 PM

I'm wondering if anyone can help me.  I'm receiving this DLS error just over the last couple of days, however I'm on a Mac running Windows 8 via Parallels. 



#10 JohnC_21

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Posted 25 March 2016 - 07:30 PM

I'm wondering if anyone can help me.  I'm receiving this DLS error just over the last couple of days, however I'm on a Mac running Windows 8 via Parallels. 

I think you would get better results posting in the Mac Forum. Does this only happen when in Windows 8? This may be a Parallels issue which I have no experience with.



#11 Micheal0090

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Posted 31 October 2016 - 07:52 AM

Here is the complete guide to solve it. http://feedsyouneed.com/dns-lookup-failed-fixed/






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