Firefox Updated Version

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.

  1. Download Mozilla Firefox Updated Version Free
  2. Download Mozilla Firefox Updated Version
  3. Mozilla Firefox Updated Version Free Download

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

  • Firefox Developer Edition. Get the Firefox browser built just for developers. Check out the home for web developer resources. Firefox Reality. Explore the web with the Firefox browser for virtual reality. Donate your voice so the future of.
  • Mozilla Firefox is multi-platform, and it is available for both desktop and mobile devices. Its desktop version is supported for Windows, Mac, and Linux operating systems. For mobile, it is supported for both Android and iOS with the apps Firefox for Android and Firefox for iOS, respectively. Data can be synced between Firefox versions across.

Latest version Version 362. Released Aug 21, 2020 - 546.68 KB. Works with firefox 48.0 and later. Just a small bug fix release this time! Works with firefox 48.0. Download Mozilla Firefox Portable Version. Download Google Chrome Portable Version. Download Opera Portable Version. BONUS TIP: Opera users can also manually create portable version of Opera web browser. This way, Opera will be installed in a single folder and then you can copy that folder to your USB drive and use it as a portable app.

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.
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.

Translation(s): English - Español - Français - Italiano - Русский

  • Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, Mozilla Corporation. Firefox is available for many Operating Systems, on desktop and mobile.


  1. Installing Firefox
  2. Profile

Installing Firefox

From Debian packages

On DebianStable, Install the firefox-esr package.

This installs the Extended Support Release of Firefox. ESRs are not updated with new features every six weeks. They are instead supported for more than a year, updating with major security or stability fixes.

Support for languages other than English is available in packages named firefox-esr-l10n*.

On DebianUnstable, to install the Release version of Firefox, install the firefox package.

From Mozilla binaries

Mozilla distributes ready-to-use Firefox binaries for Linux on their website:

  • - Release

  • - Beta

  • - Nightly

To install any of them on DebianStable:

  • Download the Firefox version you want directly from the official website
  • Uncompress the archives:
    • in the /opt directory (system-wide installation - requires Root privileges)

    • in your home directory (install only for the current user)
  • Create a file firefox-stable.desktop (replace stable with beta or nightly if needed) with the contents below:

    • in the /usr/share/applications directory (system-wide installation - requires Root privileges)

    • in the ~/.local/share/applications directory (install only for the current user)

  • Replace /opt/firefox with the path to the directory where you extracted the archive.

  • If you want to be able to launch Firefox from a CommandLineInterface, create a symlink to the firefox executable in /usr/local/bin/. For example: sudo ln -s /opt/firefox/firefox /usr/local/bin/firefox

  • If you want to use your manually installed Firefox as the default DebianAlternatives browser (x-www-browser), run sudo update-alternatives --install /usr/bin/x-www-browser x-www-browser /opt/firefox/firefox 200 && sudo update-alternatives --set x-www-browser /opt/firefox/firefox

From Flathub

Mozilla provides an official FlatPak at FlatHub.

If you haven't already set up flatpak, run

Install it:

Run it:

If you have added /var/lib/flatpak/exports/bin to your PATH, you can also run it with the command

  • If you want to use your Firefox flatpak as the default DebianAlternatives browser (x-www-browser), run

Flatpaks don't support native messaging. Therefore, add-ons which rely on it such as KeePassXC Browser don't work. A workaround for KeePassXC is described in the Flathub forum. Since the KeePassXC's socket has been renamed in KeePassXC 2.6, for this version you need to tweak the solution as described in comment #3

Using snap

Mozilla provides an official Snap package for Firefox:

If you haven't already installed snapd, run

Install it:

Run it:

Snap packages don't support native messaging. Therefore, add-ons which rely on it such as KeePassXC Browser don't work. Since KeePassXC's server socket has been renamed, you need to tweak the workaround as explained in


Firefox user data (your home page, toolbars, installed extensions, passwords, bookmarks...) are stored in a profile folder. (See this Mozilla support page).

  • ~/.mozilla/firefox/: location of profile directorie, for flatpak installations, it is ~/.var/app/org.mozilla.firefox/.mozilla/firefox/

  • /etc/firefox-esr/default/profile/: Files to copy to newly created profiles. Use this location to preconfigure Firefox.

  • ~/.mozilla/firefox/*.*/user.js: firefox preferences for each profile. These preferences can also be set from the browser interface, or from the about:config page.

  • /etc/firefox-esr/firefox-esr.js: default Firefox system-wide preferences. Each profile/user can override these preferences.

  • You can start the Profile Manager from Firefox or from the command line: firefox --no-remote -P

* If firefox refuses to start with the existing profile because the version of firefox launched is supposedly not compatible, you can try removing the file compatibility.ini within the profiles directory. You may want to back up the profiles directory first, in case of an actual incompatibility.

or, if you are using flatpak

Disabling automatic connections

Firefox makes a number of automated connections to Mozilla's (and other's) servers without explicitly asking the user for approval. Mozilla documents that list in the How to stop Firefox from making automatic connections page. Here is a table of the above parameters and how Debian diverges from the upstream default:

The table below may be out of date. It was created on 2018-09-23 from the upstream page by looking at an empty profile on Firefox ESR 60.2.1esr-1. Mozilla's documentation itself may be missing some parameters as well.





Auto-update checking




Auto-update search engines



Blocklist updating




Anti-phishing and malware protection lists




Tracking protection




Secure website certificates (OCSP)




Link prefetching




DNS prefetching


false (means enabled)


Speculative pre-connections




Add-on list prefetching

N/A (can't be turned off)



Extensions update check




Live Bookmarks updating

N/A (user-enabled)

none by default

none by default

Downloads restarted

N/A (user-enabled)



Search plugin icon loading




Firefox Sync

? (needs user to opt-in)







Geolocation for default search engine



'What's new' page




Add-on metadata updating










false in releases, true in nightly

false? there are other parameters


not present (means enabled)

not present

OpenH264 plugin download








Send Video To Device




Captive portal detection




Loopback connection

can't be disabled

disabled on Linux


Other projects aim at improving security and privacy in Firefox:

Download Mozilla Firefox Updated Version Free

  • TorBrowser - Firefox-based Web browser aimed at defending against tracking, surveillance, and censorship.

  • - Firefox configuration hardening

  • - Anarcat's firefox-tmp script


The only plugin supported by Firefox is FlashPlayer (NPAPI version). Other plugins are no longer supported.

Plugins are found at /usr/lib/mozilla/plugins (system wide) or ~/.mozilla/plugins (current user only).

Download firefox updated version

Download Mozilla Firefox Updated Version


Firefox is consistently crashing on a website:

  • Run firefox in safe mode (extensions and themes disabled): firefox --safe-mode

  • If this fixes the problem, one of your extensions is the root cause, if not:
  • Create a new firefox profile: firefox --no-remote -P (or from the about:profiles page)

No sound:

Go through the general Sound troubleshooting steps. If this fails, reinstall alsa and pulseaudio:


From Debian Etch through Debian Jessie (9th June 2016), Mozilla Firefox was not available in Debian with the official name or branding. Instead, Debian shipped a free-software version rebranded by Debian, named Iceweasel. This fork was maintained because of a disagreement with Mozilla regarding backporting of the security fixes to DebianStable, and as the result could not use trademarked Mozilla artwork.

Starting from DebianStretch, the iceweasel package has been made a transitional package for firefox-esr. Normal Debian support policies, including patches for bug fixes, apply to the package.

  • - Will IceWeasel be based on a fork or on vanilla FireFox?

  • - The end of the Iceweasel Age

  • - Renaming Iceweasel to Firefox

Iceweasel used to require gstreamer1.0-libav gstreamer1.0-plugins-good packages for good video playback support.

External links

  • Mozilla Firefox Homepage

  • Debian Mozilla Team

  • Firefox - Arch Wiki

  • #debian-mozillaIRC channel

Mozilla Firefox Updated Version Free Download

CategoryWebBrowser CategorySoftware CategoryNetworkApplication CategoryRedundant: merge relevant info from Mozilla