error message saying "DNS cannot resolve host name"?

[Behr18]

I have not been able to get pass the login because of this error message. I'm new to Second Life but i looked at all the requirements for the game and I seem to have all of them. Can someone help me figure out this problem? I have tried some of the "tricks" on how to fix it but that does not seem to be working either. The error message looks like 

Login Failed.

DNS could not resolve the host name.

Please verify that you can connect to the www.secondlife.com web site. If you can, but continue to receive this error, please go to the support section and report this problem. 

I have verified i can connect to the site but i still get the error message. I'll take any advice i can get, please and thank you. 

[Ansariel Hiller]

http://neilrobinson.wordpress.com/2008/05/19/a-fix-for-dns-errors/

[Rolig Loon]

As LL's description puts it: "If DNS can't be resolved as described above, it's somewhat like dialing a forwarding phone number that recently existed but the phones were disconnected — perhaps at the other end, or something in between happened. " Basically, it means that your viewer and SL's servers have temporarily lost the ability to talk to each other because there are squirrels on the line. Unless there's a problem with the servers (Always check http://status.secondlifegrid.net/ first), it's probably something on your end. So....

(1) Try shutting off your computer, unplugging the router and modem for a couple of minutes, and then plugging them back in and restarting. That simple step may clear up everything

(2) If not, try clearing your cache manually. With Second Life closed, go to the appropriate pathway and delete all the files inside the "cache" folder.

Windows XP - C:\Documents and Settings\\Application Data\SecondLife\cache
Windows Vista - C:\Users\\AppData\Roaming\SecondLife\cache
Windows Vista Home Premium - C:\Users\\AppData\Roaming\SecondLife\browser_profile\cache
Windows 7 - C:\Users\\AppData\Roaming\SecondLife\browser_profile\Cache AND
Windows 7 - C:\Users\\AppData\Local\SecondLife\ (Viewer version 1.23.5 (136262))
Mac - /Users//Library/Caches/SecondLife
Linux - ~/.secondlife/cache

(3) If things are STILL messed up, contact your ISP. Maybe they are working on their Internet connections. Mine go down for about 20 minutes once a month or so while they are vacuuming dust out of their servers, or whatever they do.

Mac users sometimes have their own special DNS problem, too. See https://jira.secondlife.com/browse/VWR-25627 and consider adding your vote. Meanwhile see the solution here: http://neilrobinson.wordpress.com/2008/05/19/a-fix-for-dns-errors/.

Basically, it amounts to adding the following additional DNS servers to your DNS settings in Network settings under System Preferences:
208.67.222.222
208.67.220.220

[Disciple]

I hve the DNS problem on my Windows 7 and have been in SL a whole and just got the problem today.

I can go to any website

I did everything you said in your post:

Contacted my DSL provider - they said no problem

Cleared the DNS cache in Windows 7

Unpugged, shut down for a while, Restarted

Even set the Google DNS settings lke the Wiki recommended

Keep getting the same error and cant log in

[Mia Yakan]

ditto,

same problem for 5 years,

sent bunches of requests for help, SL ignores.

dont get your hopes up, as long as the few outnumber the payers, we will be ignored.