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!

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 do I get Firefox to be supported on my Mac?

  • 1 phendula
  • 3 inale ngxaki
  • 6 views
  • Impendulo yokugqibela ngu TonyE

more options

bold textFirefox will not open: I downloaded 4.0 and get error message that Firefox is not supported on this architecture. How do I fix this?

'''bold text'''Firefox will not open: I downloaded 4.0 and get error message that Firefox is not supported on this architecture. How do I fix this?

All Replies (1)

more options

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

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