Users on 64-bit Windows who download Firefox can get our 64-bit version by default. That means you get a more secure version of Firefox, one that also crashes a whole lot less. How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more.

What’s the difference between 32-bit and 64-bit?

Firefox 51.0.1 (32-bit). Free download mozilla firefox start page mozilla firefox firefox 64 bit firefox os raspberry pi login firefox 64 bit. Manual - Firefox 51 Beta 3 DONE Smoke and Exploratory Testing with focus on: Bookmarks, OS X 32-bit mode, and OS X Signing. Detailed test results: in TestRail (requires access rights) or as a pdf. DONE Bug verification with focus on the latest fixes to land in this build. Automated (configs for ondemand) DONE Updates on beta-cdntest channel.

Here’s the key thing to know: 64-bit applications can access more memory and are less likely to crash than 32-bit applications. Also, with the jump from 32 to 64 bits, a security feature called Address Space Layout Randomization (ASLR) works better to protect you from attackers. Linux and macOS users, fret not, you already enjoy a Firefox that’s optimized for 64-bit.

How do you get 64-bit Firefox?

If you’re running 64-bit Windows (here’s how to check), your Firefox may already be 64-bit. Check your Firefox version (in the “About Firefox” window) and look for “(32-bit)” or “(64-bit)” after the version number:

• If you see “(32-bit)” and you are running Firefox 56.0 or older, updating to the latest Firefox version should automatically upgrade you to 64-bit.
• If you see “(32-bit)” and are running Firefox 56.0.1 or newer, then your computer may not meet the minimum memory requirement for 64-bit (3 GB RAM or more). You can still manually install 64-bit Firefox, if you choose.

Mozilla Firefox 32 Version Download

If you need to run 32-bit Firefox or manually install 64-bit Firefox, you can simply download and re-run the Windows (32-bit or 64-bit) Firefox installer from the Firefox platforms and languages download page.

Mozilla Firefox 32 Bit Vista

Sorry I can't work out how to do the above after a few minutes of trying.My windows 7 machine has been taken over by malware and prevents the download.I think the malware originated from a website pretending to be mozilla.org which I accidentally clicked on.Reinstalling windows has not fixed the problem.i guess they have a robot installing malware to my ip address or something.The offending website is the one that pops up as the number one advertised website when you search for 'mozilla firefox' on bing.The website does not appear on google on my Linux machine.Perhaps the malware is introducing the fake website into my search results.I don't know ,I am not an expert.