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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

I keep getting DNS ERROR and have a job to use Firefox now

  • 1 èsì
  • 2 ní àwọn ìṣòro yìí
  • 2 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ cor-el

more options

Error on adding toolbar element; NS_ERROR_UNEXPECTED,Component returned failure code:0x8000ffff (NS_ERROR_UNEXPECTED) [nslPrefBranch.getCharPref]

Error on adding toolbar element; NS_ERROR_UNEXPECTED,Component returned failure code:0x8000ffff (NS_ERROR_UNEXPECTED) [nslPrefBranch.getCharPref]

All Replies (1)

more options

What kind of DNS error do you get?


Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).