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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. You can still manually install 64-bit Firefox, if you choose.

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).

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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.

Check your Firefox version (in the “About Firefox” window) and look for “(32-bit)” or “(64-bit)” after the version number:

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If you’re running 64-bit Windows ( here’s how to check), your Firefox may already be 64-bit.

Linux and macOS users, fret not, you already enjoy a Firefox that’s optimized for 64-bit. 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. Here’s the key thing to know: 64-bit applications can access more memory and are less likely to crash than 32-bit applications. 2015 old versions Licence Free OS Support Windows Ranking 2 in Web browsers. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, and much more. Any version of Mozilla Firefox distributed on Uptodown is completely virus-free and free to download at no cost. Download rollbacks of Mozilla Firefox for Mac. What’s the difference between 32-bit and 64-bit? Download Now Mozilla Firefox browser is a fast, full-featured Web browser. It includes all the file versions available to download off Uptodown for that app.

How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more. That means you get a more secure version of Firefox, one that also crashes a whole lot less. With the release of each newer version the tool has run more and more smoothly, allowing it to compete head to head with its main competitors.Įach newer version of Firefox has definitely presented important changes and improved its service, allowing it to no longer be seen as a simple alternative to Internet Explorer and Google Chrome and to become the main choice for millions of users around the world.Users on 64-bit Windows who download Firefox can get our 64-bit version by default. The speed with which websites are loaded, and resource use, have also seen improvements, therefore avoiding the excessive use of memory found on previous versions. Performance and stability have, once again, been improved with better JavaScript and rendering engines, increased HTML5 compatibility, independent processing for the browser’s add-ons, and much more. Its latest releases have centered on improving technical aspects, as its appearance continues being pretty much the same as that of previous versions. Among its main features are the option of being able to browse several websites at the same time thanks to its tab system, all while supporting most existing web standards as well as offering a personalized experience thanks to its extensions, add-ons, and themes that have been created by the community and which allow you to expand its functions. Mozilla continues working on more improvements for its star product: the free and open source browser, Firefox.

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