Firefox no longer works with Mac OS X 10.5

Revision Information
  • Revision id: 32068
  • Created:
  • Creator: scoobidiver
  • Comment: added keywords and line breaks
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Verdi
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: Verdi
Revision Source
Revision Content

Firefox 16 is the last version of Firefox that works with Mac OS X 10.5. To keep your personal information safe, we recommend you switch to a newer computer capable of running Mac OS X Mountain Lion (10.8) if possible. This article covers your options.

Note: This article only applies to Mac OS X.

Option 1: Switch to a newer computer

Apple stopped supporting Mac OS X 10.5 in 2009 and many software makers have either dropped support for it or soon will. Your best bet is to get a computer capable of running the latest version of Mac OS X - Mac OS X Mountain Lion (10.8). This is the most secure option and will allow you to run the latest and greatest Firefox.

Option 2: Continue to use Mac OS X 10.5 and Firefox 16

If you can't switch to a newer computer you can continue to use Mac OS X 10.5 and Firefox 16 - they will continue to work. However, you will no longer receive stability and security updates for Firefox.

Warning: Continuing to use Mac OS X 10.5 is no longer supported by Apple and poses a significant security risk.