Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

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

I have a mac with os x 10.5.6. After attempting to download firefox I received a message saying that firefox isn't supported on this architecture. What to do?

  • 1 reply
  • 3 have this problem
  • 2 views
  • Last reply by cor-el

more options

What version of firefox is supported on OS X 10.5.6?

What version of firefox is supported on OS X 10.5.6?

All Replies (1)

more options

Firefox 4 and later require at least OS X 10.5 and an Intel Mac.

For an unofficial Firefox 8 compatible version TenFourFox that runs on PowerPC Macs with OS X 10.4.11 and OS X 10.5.8 you can look at:


You can find the latest Firefox 3.6.x release for your system here: