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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Just downloaded FF4.0 for Mac and it will not open. Says it will not work with this version. what's wrong?

  • 2 replies
  • 5 have this problem
  • 7 views
  • Last reply by MaryDetto

MaryDetto
MaryDetto
more options

Used FF 3.1.6 for years just fine. Downloaded FF4 and when I went to pull it from my applications folder there was no icon, just a square saying FF4. Pulled it to the bar and got a message saying "you cannot use the appliction "firefox" with this version of Mac OS X"

Used FF 3.1.6 for years just fine. Downloaded FF4 and when I went to pull it from my applications folder there was no icon, just a square saying FF4. Pulled it to the bar and got a message saying "you cannot use the appliction "firefox" with this version of Mac OS X"

All Replies (2)

TonyE
TonyE
  • Moderator
more options

Firefox 4 requires at least OS X 10.5. You can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com

MaryDetto
MaryDetto Question owner
more options

Thank you TonyE. I downloaded the older version and it works. I appreciate your help!