Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

How can I open Firefox 4.0 (or my old Firefox 2.0.0.12)

  • 2 பதிலளிப்புகள்
  • 27 இந்த பிரச்னைகள் உள்ளது
  • 5 views
  • Last reply by musky6

I had been using Foxfire 2.0.0.12 with Mac OSX 10.3.9 . I had Mac OSX 1o.5.8 installed a month ago and just now downloaded Firefox 4.0 . Now I can't open either version. I get the message - (You can't open the application "Firefox" because it is not supported on this architecture.) So, right now, I can't access any Firefox program. Did I lose both Firefox versions? Someone PLEASE help! Thanks.

I had been using Foxfire 2.0.0.12 with Mac OSX 10.3.9 . I had Mac OSX 1o.5.8 installed a month ago and just now downloaded Firefox 4.0 . Now I can't open either version. I get the message - (You can't open the application "Firefox" because it is not supported on this architecture.) So, right now, I can't access any Firefox program. Did I lose both Firefox versions? Someone PLEASE help! Thanks.

All Replies (2)

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox

If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

To - TonyE - Your solution to my Firefox 4.0 problem worked GREAT! I downloaded the 3.6.16 version and everything works just fine. I even got ALL of my bookmarks back again. THANKS so much for your help !!!!! (musky6)