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

i keep getting this when i first click on fire fox{javascrip application type error:this.oRoot.enable is not a function} this only happens on fire fox

  • 1 reply
  • 1 has this problem
  • 7 views
  • Last reply by cor-el

more options

when i click on the fire fox on my desk top a box with the above pops up i have to hit the ok button under this box to get fire fox to come on.sometime when i am on fire fox also this box comes on and i have to hit ok button again.I don't know what is causeing this but it driving me crazy and it only does it when i use fire fox.

when i click on the fire fox on my desk top a box with the above pops up i have to hit the ok button under this box to get fire fox to come on.sometime when i am on fire fox also this box comes on and i have to hit ok button again.I don't know what is causeing this but it driving me crazy and it only does it when i use fire fox.

All Replies (1)

more options

That issue can be caused by the McAfee Site Advisor extension

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).