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. If you try to start Firefox using a locked profile, it will crash (see 573369) Unresolved.
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).Where’s the Firefox 3.6 source code A tarball of the Firefox 3.6 source code is available for download. See Help->About Mozilla Firefox, Credits for a list of some of the people who have contributed to Firefox 3.6. 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. Extensions and Themes can be downloaded from Firefox Add-ons.Check your Firefox version (in the “About Firefox” window) and look for “(32-bit)” or “(64-bit)” after the version number: Although Google Chromes still owns the throne of best web browser for desktop, it doesn’t mean it’s the right. Even in 2021, Chrome is the leading web browser for desktop computers.
If you’re running 64-bit Windows ( here’s how to check), your Firefox may already be 64-bit. Download Mozilla Firefox Offline Installer (Windows, Mac & Linux) Here are the offline installers of the Firefox browser. Prior to Firefox 62, only /S and /INI are accepted, and /StartMenuShortcut is not available in INI files, only the plural /StartMenuShortcuts. The list is valid for Firefox 62 and later. The following command line options are accepted. Linux and macOS users, fret not, you already enjoy a Firefox that’s optimized for 64-bit. The full installer provides a number of options that can be used either from the GUI or from the command line. 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. What’s the difference between 32-bit and 64-bit? 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. Users on 64-bit Windows who download Firefox can get our 64-bit version by default.