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Firefox won't open: "Firefox isn't supported by this architecture" (Mac)

  • 2 replies
  • 2 have this problem
  • 4 views
  • Last reply by SafeBrowser

toon.van.heertum@gmail.com
toon.van.heertum@gmail.com
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I had Firefox installed for several years, but it couldn't be updated: in 'preferences' the 'automatic update Firefox'-zone was grey (not active). So I decided to uninstall Firefox and reinstall it again after having downloaded the 6.0 version. Over the Ff-logo is a 'forbidden'-symbol and when I try to launch it, I get the above message (not supported by this architecture). I have Mac OS X 10.5.8 on my iMac

I had Firefox installed for several years, but it couldn't be updated: in 'preferences' the 'automatic update Firefox'-zone was grey (not active). So I decided to uninstall Firefox and reinstall it again after having downloaded the 6.0 version. Over the Ff-logo is a 'forbidden'-symbol and when I try to launch it, I get the above message (not supported by this architecture). I have Mac OS X 10.5.8 on my iMac

All Replies (2)

David McRitchie
David McRitchie
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OS X 10.5.* requires an Intel chip, if you don't have that, then it is not supported, and you would need to go back 3.6.21

For those that really need an earlier version of Firefox, find your system and the Firefox version you want in releases, download and start the install.

or with the latest of version 3
Note Mac OS X 10.4 user, and Mac OS X 10.5 users without Intel cannot upgrade to Firefox 6.

When reinstalling Firefox from a download, Firefox must be down once the installation starts. When the installation finishes, don't let the install start firefox for you. Instead end the install and start Firefox in your normal manner, thus preventing creating a new profile which does not have your bookmarks cookies, etc (but your old profile would still be around and would).

Modified by David McRitchie

SafeBrowser
SafeBrowser
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You can try TenFourFox, developed especially for older Mac architecture:

Firefox 6 system requirements:https://www.mozilla.org/en-US/firefox/6.0/system-requirements/index.html


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