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

tried to download F4 on OS x 10.4.11, got in a tangle, ended up uninstalling earlier version, then when tried to download 4 again a no entry symbol was across it and computer wouldn't open it. Help, I now have no firefox.

  • 1 cavab
  • 3 have this problem
  • 1 view
  • Last reply by TonyE

more options

tried to download F4 on OS x 10.4.11, got in a tangle, ended up uninstalling earlier version, then when tried to download 4 again a no entry symbol was across it and computer wouldn't open it. Help, I now have no firefox.

tried to download F4 on OS x 10.4.11, got in a tangle, ended up uninstalling earlier version, then when tried to download 4 again a no entry symbol was across it and computer wouldn't open it. Help, I now have no firefox.

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