Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox fail to access numerous websites randomly

  • 4 iimpendulo
  • 1 inayo le ngxaki
  • 23 views
  • Impendulo yokugqibela ngu cor-el

more options

I can't access numerous website randomly today. But the same website could be accessed via IE8 without problems.

I got message like :
**********************************************************
Unable to determine IP address from host name "www.thesiteIvisit.com"

DNS server returned:
No DNS records

This means that the cache was not able to resolve the hostname presented in the URL. Check if the address is correct.

Your cache administrator is webmaster.
**********************************************************************

I had cleared my cache and history; but it does not help.

Do I need to increase cache size , how ?

I can't access numerous website randomly today. But the same website could be accessed via IE8 without problems. I got message like :<br /> <nowiki>**********************************************************</nowiki><br /> Unable to determine IP address from host name "www.thesiteIvisit.com" DNS server returned:<br /> No DNS records This means that the cache was not able to resolve the hostname presented in the URL. Check if the address is correct. Your cache administrator is webmaster.<br /> <nowiki>**********************************************************************</nowiki> I had cleared my cache and history; but it does not help. Do I need to increase cache size , how ?

Ilungisiwe ngu cor-el

All Replies (4)

more options

Hi,

You can try to restart Firefox. Hopefully the problem will be gone. You can also try to set No proxy in Tools (Alt + T) > Options > Advanced > Network > [Settings.

Options

If the problem persists, you can also consider the Reset Firefox feature via Help (Alt + H) > Troubleshooting Information.

(To revert to the previous profile you were using, close the new profile (i.e. exit Firefox), start Firefox and choose the Default User profile. While the Profile Manager is open, you can also delete the newly reset profile (the one containing random numbers), or the former profile, as the case may be).

Managing profiles

Profiles Howto

more options

Did you try to reboot the computer or to reset (power off/on) the router?

See also http://kb.mozillazine.org/Error_loading_websites#DNS

more options

After reboot, it is OK now, thank you for your advice.

more options

You're welcome