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Firefox 3.5.3 works fine, but Update to 24 fails to start.

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My Firefox 24 ( installed from Firefox Setup Stub 24.0(2).exe) will not open. I have completely uninstalled and deleted Firefox Setup Stub 24.0(2).exe, re installed Firefox from Firefox Setup 3.5.3 and it works perfectly. (I could use this but I notice that it will not support Fast Video Downloader that I have been using for ages) I have reverted to default settings and only have a Default Profile. As soon as I update to Firefox 24 (downloaded - not my on disc version) Firefox will not start.

All Replies (5)

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hello michaelolive, firefox 3.5.3 had been released over 4 years ago, so a smooth update process that jumps that many version numbers cannot be guaranteed or even tested. if you are having issues with starting the new version, please try creating a new profile: Profile Manager - Create, remove or switch Firefox profiles

in case there are issue with the "Setup Stub".exe, try using the full installer that is available for your system at

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Thanks Philipp. I have started afresh with a new download of Firefox 24 but it still does not start. I have only the default profile installed. Perhaps I should have included that I am using Windows XP with an AMD64 processor in a Foxconn motherboard.

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thanks for reporting back - is it possible to launch the profile manager and to create a fresh profile (like described in the article i've linked to above)?

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Hello, also, be sure you have sp2 and above, because firefox (from 13.0 version and above) needs xp sp2 or sp3, see:

Firefox 24 System Requirements

Firefox no longer works with some versions of Windows XP

thank you

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Hi My Windows XP is sp3 but Firefox still does even start up. I may have a problem somewhere else, but if not and Firefox 24 will not work, how far back in Firefox versions would I need to go? Where can I get earlier versions without going all the way back to 3.5.3? (Everything on my 6 year old PC works well on XP and I don't want to try and run a new Windows and run into compatibility problems) Thanks Michael