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.

Buscar en Ayuda

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 used Firefox for a long time, I downloaded version 4.0 and now I get a messages that says "you cannont use the application "FIrefox" with this version of Mac OS X (10.4.11) and version 3.6 will not download! Any ideas? in English

  • 4 respuestas
  • 62 tienen este problema
  • 1 visita
  • Última respuesta de dynamite

more options

After I downloaded Firefox 4.0 I received the following message: You cannot use this application "Firefox" with this version of Mac OS X. I have been using Firefox for a few years on this computer.

I tried to reload version 3.6 but the same message now pops up and won't let me use Firefox at all. I'd like to go back to 3.6, but can't even do that now!

After I downloaded Firefox 4.0 I received the following message: You cannot use this application "Firefox" with this version of Mac OS X. I have been using Firefox for a few years on this computer. I tried to reload version 3.6 but the same message now pops up and won't let me use Firefox at all. I'd like to go back to 3.6, but can't even do that now!

Solución elegida

Unfortunately, Firefox 4 supports only Mac OS X 10.5 and above on Intel hardware. The system that you are currently using is no longer supported by Firefox (details can be found here).

You should revert back to previous version (3.6.16) of Firefox by following these steps:

  1. Open the Applications folder.
  2. Drag the Firefox application to the Trash.
  3. Download and install Firefox 3.6 from here.
Leer esta respuesta en su contexto 👍 2

Todas las respuestas (4)

more options

Solución elegida

Unfortunately, Firefox 4 supports only Mac OS X 10.5 and above on Intel hardware. The system that you are currently using is no longer supported by Firefox (details can be found here).

You should revert back to previous version (3.6.16) of Firefox by following these steps:

  1. Open the Applications folder.
  2. Drag the Firefox application to the Trash.
  3. Download and install Firefox 3.6 from here.
more options

THANK YOU, DYNAMITE! It works beautifully now.

Anne

more options

I have Firefox 3.6.6, and now that Firefox 4.0 is available, it crashes constantly. Sometimes less than 5 minutes after I open it. I have a Mac 10.4.11, so Firefox 4.0 isn't an option for me. When I asked Ff to check my plug-ins it said there was an error and to check back later. Twice.

Because I didn't have any (any) problems with my Ff before the upgrade became available, I am forced to question if Ff has done something to make the earlier version crash so you'll upgrade, but I can't afford to upgrade my Mac right now.

In the meantime, I do need a browser that works! I dislike Safari, Chrome is also not available on Mac 10.4.11, and Explorer is just plain not available on Mac.

Do you have any suggestions on how to fix my Firefox 3.6.6?

Ty

more options

@Inzd, Firefox has done nothing to cause crashes in previous versions. Most probably, it is due to an add-on.
Please check if the solutions given in this article help: Troubleshoot Firefox crashes (closing or quitting unexpectedly).

As an alternative, you can install another browser called TenFourFox from here since it works on Mac 10.4: http://www.floodgap.com/software/tenfourfox.