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[Closed] Firefox start always in 32-bit on 64-bit system

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Last seen: 4 years 2 months ago
Joined: 2017-04-17 15:54
[Closed] Firefox start always in 32-bit on 64-bit system

I have problem with launching 64-bit version of 55.0.3 on Win 10 x64.
When I launch fresh install of Firefox Portable then in Process Explorer there is 32-bit "Firefox Portable" launcher process and 64-bit "Firefox" processes.
But when I move my profile in to this installation then launcher always runs 32-bit version.
How to run 64-bit Firefox with existing profile?

(AlwaysUse32Bit is set to false)

3D1T0R's picture
Last seen: 2 years 11 months ago
Joined: 2006-12-29 23:48
What is your profile import method?

How are you 'moving your profile in to this installation'? What exact steps are you doing?


Last seen: 4 years 2 months ago
Joined: 2017-04-17 15:54
Short answer: in a proper way

Short answer: in a proper way.

I dig deeper into this problem and definitely there is a flaw in updating routine of Firefox Portable.
Finally problem was not updated FirefoxPortable.exe - my version from 2014 wasn't overwritten by newer version from 2017. So probably this launcher even not know that Firefox 64 exist.
I have used Firefox Portable from a years (even before 2014) and always used Firefox Portable's built-in update option. I don't suppose that it don't update launcher itself.

John T. Haller
John T. Haller's picture
Last seen: 1 hour 12 min ago
Joined: 2005-11-28 22:21
Just Firefox

That will only update Firefox itself. And then only the version of Firefox you're currently using (so if you're using the current Firefox Portable in 32-bit mode, it will only update 32-bit Firefox). It's best to update the whole thing using the PAF installer so you get updates to the launcher for bug fixes and new features like when we switched to 32-bit and 64-bit. The Platform makes that easy and automatic.

Sometimes, the impossible can become possible, if you're awesome!

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