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

When I updated to Firefox 5.0, my McAfee software stopped working. How do I get it to work?

  • 2 replies
  • 13 have this problem
  • 1 view
  • Last reply by Who89

more options

I have lost my McAfee protection by updating Firefox. Can I go back to the previous version?

I have lost my McAfee protection by updating Firefox. Can I go back to the previous version?

All Replies (2)

more options

The McAfee Site Advisor 3.3.1 extension was the number 2 cause of crashes in one of the Firefox 5.0 betas and Mozilla Blocklisted it. That extension is disabled in Firefox 5, Firefox 6.0beta, and Firefox 7.0alpha versions. McAfee is working on a new re-written version of the Site Advisor extension to fix their problems - ETA is mid to end of July. https://www.mozilla.com/en-US/blocklist/

credit to the-edmeister

more options

WOT similar