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

Will Firefox for Mac 3.6.19 work after upgrading to Lion?

  • 4 replies
  • 13 have this problem
  • 2 views
  • Last reply by mrc88dal

more options

I must use Firefox 3.6.19 because versions 4 & 5 cause problems with my employer's web-based application. Will 3.6.19 work after upgrading to Lion?

I must use Firefox 3.6.19 because versions 4 & 5 cause problems with my employer's web-based application. Will 3.6.19 work after upgrading to Lion?

All Replies (4)

more options

Version 3.6.19 will work on OS X 10.7 Lion

Downloadable font support has been turned off in 3.6.19 on Lion due to a bug in Lion. The bug was causing Firefox to crash.

more options

Thanks Tony! I went ahead and upgraded to Lion and am using Firefox 3.6.19 with no issues so far.

more options

Please click the Solved It button next to the answer that answered or solved your Firefox support issue, it appears when you are logged in, so this thread gets marked as Solved to help other users who may have this same problem.

more options

While I appreciate Tony's post, it did not solve my problem or necessarily answer my question. That's why I didn't check the Solved It box. Firefox 3.6.19 works in the Lion environment and I discovered that by proceeding with the OS 10.7 update on my own. I don't see a Solved It box next to my name.