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 get "overLIB 4.10 or later is required for the CSS Style Plugin" every time I open certain sites, could you tell me what I need to do for this? Thank you.

  • 1 resposta
  • 27 have this problem
  • 1 view
  • Last reply by Hasan

more options

I get "overLIB 4.10 or later is required for the CSS Style Plugin" on certain websites, could you please advice me as to what to do to stop this window from popping up? Thank you

I get "overLIB 4.10 or later is required for the CSS Style Plugin" on certain websites, could you please advice me as to what to do to stop this window from popping up? Thank you

All Replies (1)

more options

Troubleshooting Plugins

https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins

Check and tell if its working.