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.
Firefox browser also introduces a clean new design that makes it easier to get more things done, more quickly. Plus, with smart browsing features built in, Firefox lets you take your privacy, passwords, and bookmarks with you safely wherever you go. Mozilla Firefox (64-bit) - Mozilla Firefox is a fast, light and tidy open source web browser. At its public launch in 2004 Mozilla Firefox was the first browser to challenge Microsoft Internet Explorer’s dominance. Since then, Mozilla Firefox has consistently featured in the top 3 most popular browsers globally and this is set to continue.
What’s the difference between 32-bit and 64-bit?
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?
Mozilla Firefox Browser For Mac
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 Browser Problems
Do you have days where Firefox just doesn't work? Well, we put together this guide to help. It'll show you where you can find solutions to many common issues and, as always, if you need extra help with any of this, we have a community of volunteers standing by.
Table of Contents
The Refresh Firefox feature can fix many issues by restoring Firefox to its default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process.
Check out our handy guide, Avoid crashes - Tips and tricks.
That's a pretty big problem. The Firefox won't start - find solutions article should cover it.
Slowdowns can be caused by a number of things so we've summed them up in the Quick fixes if your Firefox slows down guide.
Getting error messages when you try to load up a website? Here's a few articles to help fix specific connection problems.
- If you just upgraded Firefox and it can no longer open any websites but other browsers or programs can, see the Fix problems connecting to websites after updating Firefox article.
- If no programs can open websites, see the aptly named Firefox and other browsers can't load websites article.
- If Firefox is having problems loading certain websites, see Firefox can't load websites but other browsers can.
- For other issues loading websites, see the Websites don't load - troubleshoot and fix error messages article.
Sometimes tracking down the source of these kinds of problems is difficult. We have a community of volunteers ready to help you figure it out.