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Hi guys, I just bought a laptop from a friend of a friend. So at home I have wireless network and with my old laptop i had no problems with it, i was able to connect to the internet fine. With the laptop i just bought I am able to connect to the wireless network with status:Connected and signal strength:Excelent. When i open up my browser, it says this webpage is not available...it also says. The server at www.google.com cant be found, because the DNS lookup failed. DNS is the web service that translate a website's name to its internet address. This error is most often caused by having no connection to the internet or a misconfigured network. it can also be caused by an unresponsive DNS server or a firewall preventing google chrome from accessing the network.
If anyone can help me with this, it is highly appreciated. Thank you TLers!
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Check your wireless network settings, make sure DNS is set to auto configure under TCP/IP properties, or manually set it to Google DNS (8.8.8.8).
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Rich, I highly appreciate the quick and helpful reply. Unfortunately, i am a BIG computer noob and have no idea how to even do what you suggested. if you can give me a quick step by step i would be forever in your debt =D
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What operating system are you using? I'll go ahead and outline how to do this on Windows 7. Control Panel -> Network and Sharing Center -> Change Adapter Settings -> Right click Local Area Connecting and go to Properties -> Highlight Internet Protocol Version 4 (TCP/IPv4) (and make sure it is check marked) and click Properties -> you should have Obtain an IP address automatically checked and Obtain DNS server address automatically checked (or use Google DNS as Rich said).
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I am using windows XP Charger. I will try that as as soon as I get back home. Thanks
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For XP it's slightly different:
Control Panel -> Network and Internet Connections -> Network Connections -> Right click Local Area Connection and click properties -> Highlight Internet Protocol (TCP/IP) and then click Properties -> Make sure Obtain an IP address automatically and Obtain DNS server address automatically are selected.
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be happy you live in the US, if you lived in asia, you would be having this problem because there are no more IP addresses left there. (on IPv4) Slightly off topic, but considering our government has done literally nothing to help develop IPv6, the system to replace IPv4, I feel a responsibility to inform the general public that the interwebs are filling up fast and we need to do something about it.
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Why does everyone use Google's DNS servers? Even for static IP settings.
edit: Well besides being free...
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Google's DNS servers are pretty fast. However, for some people (like me) regular ISP DNS is faster. There was an article somewhere about how using public DNS servers could drastically slow down your access speeds to data centers.
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Hi Charger. I did everything you instructed me to do, but still no luck =(
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Have you tried using a different browser? Perhaps you have a proxy set up in Chrome.
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On May 04 2011 11:44 Disregard wrote: Why does everyone use Google's DNS servers? Even for static IP settings.
edit: Well besides being free... Because ISPs have a history of providing unreliable servers or returning bogus results for non-existing domains.
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I'd use Google's dns but it's slower then my isp's consistently also i'm paranoid of google.
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On May 04 2011 11:52 Jaso wrote: Have you tried using a different browser? Perhaps you have a proxy set up in Chrome.
Yep tried it on IE and still no luck
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On May 04 2011 11:47 MetalMarine wrote: Hi Charger. I did everything you instructed me to do, but still no luck =(
Did you have to change anything or were the options already checked properly?
edit - If they were indeed checked appropriately already, try what R1CH suggested and set the DNS to Google (8.8.8.8) and let us know if that helped.
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Yeah, those options were not checked, i checked them,restarted comp, but still the same. tried the 8.8.8.8 and nothing.
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Did you try connecting via ethernet?
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Yeah, those options were not checked, i checked them,restarted comp, but still the same. tried the 8.8.8.8 and nothing.
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Try flushing your DNS cache:
Start -> Accessories -> Command Prompt -> type in 'ipconfig /flushdns' without the quotation marks and hit enter.
With either the Assign automatically options checked as previously done OR with the Google DNS server in place, try opening up a page again.
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On May 04 2011 12:45 Charger wrote: Try flushing your DNS cache:
Start -> Accessories -> Command Prompt -> type in 'ipconfig /flushdns' without the quotation marks and hit enter.
With either the Assign automatically options checked as previously done OR with the Google DNS server in place, try opening up a page again.
Huh, didn't think of that. This will probably fix it if it is indeed DNS related.
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Currently on campus studying for finals at the moment, but I wanna take a second to thank all the helpers in this thread for trying to help. Charger, I will try that once i get home. Again,thanks guys I love TL
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flushdns won't help. It seems to be thrown around a lot without people really understanding what it does.
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If the flushdns command doesn't work as R1CH suspects perhaps you should check your DNS settings on your router. I can't imagine this would work because as you said you had a laptop connected to wireless just fine and it's just this computer so it sounds like an issue with that laptop specifically. Just throwing things out there, it's hard to diagnose or suggest things when you can't physically work on the computer and the most plausible solution doesn't work.
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Hi guys, i'm back again after being insanely busy. Anyways I have tried all the methods and it doesn't seem to work. I tried connecting through my ethernet wire and i get internet, but still no luck with the wireless.
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I am using my cell phone to ask questions &am not as up on computers as most people...so please be patient . I have. same issue as above....1st comp same thing though not networked. Then got new computer and laptop which worked fine networked for 2 weeks then came home today and they are both having the same issue as previous computer. Can you please help?
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It could be due to missing/wrong registry values. You could manually fix this, but its rather complicated and since you call yourself "a big computer noob", I dont think its wise to mess around in your registry. Fortunately for you there are some simple replair programs out there. give me a few minutes and I#ll try to find one. [edit] reading the post above met, it could be some kind of malware, so I think its wise to run a full system scan with your antivirus and anti malware programs.
[edit] I dont know how good this program is, but I'd say its worth a try. (I think its win xp only)
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are you 100% sure that it's just the DNS Server. Just ping 8.8.8.8 to see if you even have an internet connection
edit: "100% percent" d'oh why would I type that?
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On May 15 2011 12:52 MetalMarine wrote: Hi guys, i'm back again after being insanely busy. Anyways I have tried all the methods and it doesn't seem to work. I tried connecting through my ethernet wire and i get internet, but still no luck with the wireless.
I think the first proper step is to check to see if it really is a DNS problem. You should attempt to run a ping, which is a packet sent to a specified destination, with it's fully qualified domain name. If it doesn't work (which it probably won't since it won't open up in the browser), try running the ping to its IP address instead.
This is how you run a ping: Start -> run -> cmd -This brings you to a command line interface where you can input commands.
From there, type ping after ping, you can type whatever fully qualified domain name, such as www.teamliquid.net.
after the results, type ping and then an IP address, such as: 173.231.136.216 (an ip address of tl.net).
If you can get results then you can for sure say it's a DNS problem.
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Also, first off, it's strange that DHCP was not checked as it's the default setting for XP I believe. Since your laptop is from you friend, he probably has his old settings. Go to your LAN properties dialog box (the one before opening the TCP/IP properties, Network Places -> right-click Local Area Network -> Properties). There should be 3 tabs on the top, General, Wireless Networks, Advanced, click Wireless Networks. The box with "Use Windows..." at the top should be checked. Go under Preferred networks, click add, and enter your wireless network information.
Tips if you don't know your information: In the notification area in Windows (the bottom right of the task bar), you should see a Connection icon. Right-click it and click View Available Wireless Networks. You should then see a list of neighboring wireless networks and should be able to pick out which one is yours by signal strength, and it should also show what type of data encryption your network uses also to narrow down your configuration (WPA, WPA2).
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On May 04 2011 11:44 Disregard wrote: Why does everyone use Google's DNS servers? Even for static IP settings.
edit: Well besides being free... Why don't people use OpenDNS, they allow a certain degree of content filtering of your traffic (e.g block inappropriate websites), while providing a reliable access to the internet AND it's free. Great DNS service if you care for your family. Of course if your a DNS purist, you can always use Google's DNS service...
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I don't know if this will be of any help but, awhile back the winsock on my laptop got corrupted and I was unable to connect to the internet. this might be what wrong with your laptop.
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First off, see if you can actually get out to the internet by pinging a public IP such as 8.8.8.8. If that is ok, perform an nslookup in your command prompt and verify that you are using the DNS server you configured. It could be your TCP/IP stack may have become corrupted. Haven't seen this since win2000 though. You can always reinstall your TCP/IPv4 settings in your network settings to see if that helps out.
when you perform the nslookup, you should see something on the lines of this if its working:
nslookup www.google.com Server: google-public-dns-a.google.com Address: 8.8.8.8
Non-authoritative answer: Name: www.l.google.com Addresses: 74.125.115.147
Aliases: www.google.com
Check your firewall as well to make sure your not blocking DNS going out. (TCP port 53 I believe) Pretty uncommon to say the least. Do an ipconfig/all and copy and paste the info here if all else fails.
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Hi guys,
I have the same problem and I don't want to make a new thread. My issue is that my internet runs fine, then suddenly and (as far as I can tell) for no apparently reason I'm not connected anymore. The modem shows no signs of disconnection (all lights are on, green, etc) and the internet connectivity toolbar thingy shows internet access. However, whenever I try to access any pages I get "_______ can't be found, because the DNS lookup failed" and it's not just for one site, it's for all of them.
It also happened during gaming today, when I DC'd during my placement match. I checked the solutions on this thread and my options are set to Obtain IP Address automatically and Obtain DNS server automatically. Any advice?
Thanks in advance.
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So is it just your DNS or your whole connection? Use an nslookup on a public IP to see if it's just your DNS failing. Are you using a wired connection or wireless?
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On July 28 2011 11:12 Grobyc wrote: So is it just your DNS or your whole connection? Use an nslookup on a public IP to see if it's just your DNS failing. Are you using a wired connection or wireless? I'm using a wireless connection. I'm not sure if it's my DNS or whole connection but I'll look it up next time it happens.
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My brother commonly gets a complete internet disconnect when using his shitty D-link USB wireless, but hasn't had any issues yet after using a wired connection, so if you don't have a quality wireless adapter that could simply be the issue.
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I have a build in d-link N150 one. The signal's a bit finicky. I'm going to try the Google DNS server, do I change the it under Local Area Connection or Wireless Network Connection?
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You change the DNS under Wireless Network Connection. Local Area connection will be your onboard wired adapter that you plugged an ethernet cable in to.
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On July 29 2011 12:35 Grobyc wrote: You change the DNS under Wireless Network Connection. Local Area connection will be your onboard wired adapter that you plugged an ethernet cable in to. Okay, thanks very much! I'll give it a shot and report the results if you care to know them.
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Hi,
I have a similar problem to the one described above. I've had the same laptop for a while now and it behaves fine on all wireless networks, then when I moved into a new place my internet went haywire, but my friends are having no problems at all. My connection says its full strength and that I'm connected to the internet, and I can even load a webpage every once in a while but most of the time I get the error that "The server at _______ can't be found, because the DNS lookup failed" and it occurs on multiple sites. When I tried to ping the teamliquid site, the first time it failed 3 times before working but when I tried again it said the host could not be found. I've tried all the other solutions on the page and nothing seems to work.
Any advice?
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hi,
I apologize in advance for the lack of grammar in this post as my Internet does not work on my laptop and I am on my iTouch out of sheer frustration.
I am having the same issue (ie dns lookup failed). my laptop connects to any wireless network fine except to the one in my apartment. it works on all my roommates computers, my iTouch (clearly) and my blackberry wifi. I am connected to the Internet, it says an excellent connection but with limited connectivity. I flushed my dns and ran an Intel PROset scan which said the ping test failed. I haven't tried the 8.8.8.8. thing yet hough because I am running windows vista and am unsure how to find it.
can someone please help because this is very frustrating especially with midterms and papers coming up next week!
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Hi farn, I recently had the "DNS lookup failed" problem with my laptop and this fixed it(please note that i use vista, if you use 7 you may have to navigate slightly different):
Go to network and sharing center, click on "manage network connections", go to properties on the wireless network connection go in the properties of internet protocol version 6(TCP/IPv6) and check the boxes "Obtain IPv6 address automatically" and "Obtain DNS server address automatically"
Hope this helps!
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I have had this problem for a few weeks and I carefully worked through all possible reasons ,, i went on lots of trouble-shooting sites to research their answers , I HAVE SOLVED THIS PROBLEM FOR ME ANYWAY, :-) the answer is ,,,,,, (drum roll here..lol) make double sure there are no updates waiting to be installed on your machine, pending updates will cause this problem. IT was black and white for me, I was struggling to get on the internet at all . then 10 mins later after I updated the problem was totally gone,and i was back to my speedy internet as normal ,I know this sounds unlikely compared to all the technical answers above and elsewhere, but please try it and post back , after all it cant do any harm can it?
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Hi there, I am having problems in internet connection. The browser shows [Fiddler] DNS Lookup for "www.google.com" failed. No such host is known. When I troubleshoot it gave the following result.
Windows IP Configuration
Host Name . . . . . . . . . . . . : hp Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Mixed IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : browserupdatecheck.in
Wireless LAN adapter Local Area Connection* 3:
Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter Physical Address. . . . . . . . . : 2E-33-7A-06-A2-C3 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe FE Family Controller Physical Address. . . . . . . . . : 38-63-BB-A6-49-C5 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::a0b4:3d1b:ce3f:169c%2(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.104(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 03 November 2015 00:03:57 Lease Expires . . . . . . . . . . : 04 November 2015 00:06:26 Default Gateway . . . . . . . . . : 192.168.1.50 DHCP Server . . . . . . . . . . . : 192.168.1.50 DHCPv6 IAID . . . . . . . . . . . : 63883142 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-EC-F1-31-38-63-BB-A6-49-C5 DNS Servers . . . . . . . . . . . : 192.168.1.50 NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Wi-Fi:
Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek RTL8723BE 802.11 b/g/n Wi-Fi Adapter Physical Address. . . . . . . . . : 2C-33-7A-06-A2-C3 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Bluetooth Network Connection:
Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) Physical Address. . . . . . . . . : 2C-33-7A-06-A2-C4 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
........................
=========================================================================== Interface List 6...2e 33 7a 06 a2 c3 ......Microsoft Wi-Fi Direct Virtual Adapter 2...38 63 bb a6 49 c5 ......Realtek PCIe FE Family Controller 11...2c 33 7a 06 a2 c3 ......Realtek RTL8723BE 802.11 b/g/n Wi-Fi Adapter 7...2c 33 7a 06 a2 c4 ......Bluetooth Device (Personal Area Network) 1...........................Software Loopback Interface 1 ===========================================================================
IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.50 192.168.1.104 20 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.1.0 255.255.255.0 On-link 192.168.1.104 276 192.168.1.104 255.255.255.255 On-link 192.168.1.104 276 192.168.1.255 255.255.255.255 On-link 192.168.1.104 276 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.104 276 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.104 276 =========================================================================== Persistent Routes: None
IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 2 276 fe80::/64 On-link 2 276 fe80::a0b4:3d1b:ce3f:169c/128 On-link 1 306 ff00::/8 On-link 2 276 ff00::/8 On-link =========================================================================== Persistent Routes: None
I've tried ipconfig/dnsflush and setting up IP 4 to "Obtain DNS server automatically". Still its not working anymore. Can anybody help?
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- does your browser have a built in proxy setting?; check it and set no proxy - is the browser allowed through your firewall?
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