hi, in the first stage win64 bit builds certainly won't be rolled out to existing 32bit installations. you'd have to download them manually via the more systems & languages link for firefox at https://www.mozilla.org

one caveat is that there will be limited support for NPAPI-plugins - only the adobe flash plugin will run in win64 bit builds of firefox. also, it looks like the firefox 41 release date for win64bit won't hold, since apparently there are still problems with the sandboxing of that flash plugin which need to be figured out.

if you want to try 64 bit builds right now, you can do so by installing a firefox beta version: https://www.mozilla.org/en-US/firefox/beta/all/

Nightly versions are much more experienced x64 builds and if you don’t care for no script plugin that is not compatible with the latest version you can try one right from:

https://nightly.mozilla.org/

are much more faster than anyone x32 application even from the version 14.1 I tried because they have much bigger rwin and memory allocation.

pub44 said

Nightly versions are much more experienced x64 builds and if you don’t care for no script plugin that is not compatible with the latest version you can try one right from:

No need to suggest to people to jump to the more unstable Nightly development channel to try Win64 builds of Firefox. The Win64 builds on Beta channel mentioned earlier are much more stable.

Besides the Beta channel gets six to twelve builds for a version while Nightly gets updates almost everyday due to checkins.

James said

No need to suggest to people to jump to the more unstable Nightly development channel to try Win64 builds of Firefox. The Win64 builds on Beta channel mentioned earlier are much more stable. Besides the Beta channel gets six to twelve builds for a version while Nightly gets updates almost everyday due to checkins.

I wrote i was using nigtly from 14.1 version and i didn't see something unstable in were exacly is your problem?

pub44 said

I wrote i was using nigtly from 14.1 version and i didn't see something unstable in were exacly is your problem?

The Nightly channel builds are for Testers and devs in mind as they are for more experienced Firefox users who understand at least the basics of separate Firefox installs and Profiles for each. One should not share a Profile between Release and Nightly builds. Also that there are updates pretty much everyday and therefore can sometimes have issues until feature is finished or problem checkin(s) is fixed or reverted.

There is no need to suggest Nighty to regular Firefox users when there are more stable Win64 builds on Beta and Aurora (developer edition) channels and Firefox 41.0 may have Win64 for Release.

also Firefox 14.0a1 is a rather old build that was on Nightly channel then back in March 2012 if that is what you are still using.

As you know if you are using 64-bit Vista then you cannot use more current Win64 builds since Firefox 37 or was it 36 actually.

I used a nightly when i make the compile in debian 8.1

https://support.mozilla.org/en-US/questions/1076723

Because I knew that they have much larger rwin and memory from Firefox and ie and they beat them in speed something you do not know if you don’t try it and if I fix a virtual machine with Ubuntu I will use again a nightly you writing papers from who for me? leave me be

hi pub44, this is getting more and more offtopic - i've noticed you in some of your other answers as well. if you want to contribute in this forum then please put your focus into answering people's questions and troubleshooting their problems, as they will be less interested in the setup you're running. also refer to our Mozilla Support rules and guidelines. thank you!

pub44 said

I used a nightly when i make the compile in debian 8.1 https://support.mozilla.org/en-US/questions/1076723 Because I knew that they have much larger rwin and memory from Firefox and ie and they beat them in speed something you do not know if you don’t try it and if I fix a virtual machine with Ubuntu I will use again a nightly you writing papers from who for me? leave me be

I do know what the Nightly channel is all about and the so called slight advantages 64-bit builds can have in some cases. I have used Nightly builds of Firefox for over twelve years. I use 64-bit Linux builds of Firefox and SeaMonkey currently.

Hmm a thread where you decided to confuse the OP in introducing the OP to Nightly channel builds for 64-bit Firefox on Linux when there has been 64-bit Linux for Release ever since Firefox 4.0 and is available alongside 32-bit Linux Release at www.mozilla.org/firefox/all

Anyways we are taking this thread off topic with your misunderstanding on some things and about the different channels like Nightly a bit. I would split this later part off but this forum software does not have the feature to split posts off as a new thread yet.

Thomas J. Seymour said

I heard 64-bit Firefox for Windows is coming in Firefox 41, which is to be released on September 22. I have the 64-bit version of Windows 10 on an Intel i5-4200U processor. When I click 'About Firefox' to upgrade from Firefox 40.0.3 to Firefox 41, would Firefox automatically upgrade from 32-bit to 64-bit, or would I have to go on www.mozilla.org and request the 64-bit version personally?

Win64 for Release is coming, not a mater of if but when. While it was much easier at time to go about 64-bit builds for Release on Linux and Mac OSX, there has been hurdles and unlike the need for with Linux and Mac OSX there was not a need to have 64-bit (Win64) as much as many may think.

If you must try Win64 now try the Beta mentioned in first reply and not the unstable Nightly channel builds that pub44 has been suggesting.

Firefox 41.0 Win64 is still a possibility but something significant could push back Win64 to a 41.0.x update or even 42.0 Release. e

Edit: Due to sandbox issues with 64-bit Flash player the Win64 may not happen with Firefox 41.0 Release at the moment. See Bug#1185532 for reading.

I made a suggestion you don't like it is your problem is not my problem you do your 'job' right and let me do mine ok

The op can install 2 browsers and firefox and nightly in 2 different directories he can run only one at a time then he can go to the speednet and will verify that nightly is much faster than anything he already has.

I know it you may never learn it.

PS philipp i made suggestion and the ther one is doing like I killed someone are you blind?

pub44 said

I made a suggestion you don't like it is your problem is not my problem you do your 'job' right and let me do mine ok The op can install 2 browsers and firefox and nightly in 2 different directories he can run only one at a time then he can go to the speednet and will verify that nightly is much faster than anything he already has. I know it you may never learn it.

If you are going to suggest to people to use different build besides Release, especially with Nightly, you should not only install them in a separate folder but also use separate Profiles for each as a Profile should not be shared in going back and forth.

Nightly builds are not meant for regular Firefox users and Beta builds are much much more stable.

New versions are started on Nightly and are moved/merged to next channel when a version is Released.

Release < Beta < Aurora (developer edition) < Nightly

Only Release channel does not have 64-bit (Win64) for Windows yet while 64-bit has been on Linux and Mac OSX since Firefox 4.0

I know what the Nightly developmental channel is all about in development as I have been Testing them for far longer than you (you say you started only at 14.0a1) with thousands more builds in use.

If anything the Aurora (developer edition) Win64 builds would be safer to suggest over Nightly in comparison as developer edition builds creates its own Profile to use by default and is a bit more stable in development.

https://developer.mozilla.org/en-US/docs/Mozilla/Multiple_Firefox_Profiles