We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

downloaded 4.0 and it will not run on my version of OS X

  • 1 valiny
  • 9 manana an'ity olana ity
  • 8 views
  • Valiny farany nomen'i Matt Brubeck

more options

I have a MAC OS X 10.4.11. I downloaded Firefox 4.0 and when I went to run it, it says "can not run with current version of OS X".

I need to either get to run 4.0 or to run the Firefox version I way previously using. I am at a loss and really would appreciate help to get back to Firefox.

Thanks, Don Costanzo

I have a MAC OS X 10.4.11. I downloaded Firefox 4.0 and when I went to run it, it says "can not run with current version of OS X". I need to either get to run 4.0 or to run the Firefox version I way previously using. I am at a loss and really would appreciate help to get back to Firefox. Thanks, Don Costanzo

All Replies (1)

more options

You can get an unofficial, community-supported version of Firefox for 10.4 here:

http://www.floodgap.com/software/tenfourfox/