Downloads of v 79.0:


Last Update:

28 Jul 2020

Package Maintainer(s):

Software Author(s):

  • Mozilla


browser mozilla firefox admin foss cross-platform

Mozilla Firefox

This is not the latest version of Mozilla Firefox available.

  • 1
  • 2
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79.0 | Updated: 28 Jul 2020



Downloads of v 79.0:


Software Author(s):

  • Mozilla

  • 1
  • 2
  • 3
Mozilla Firefox 79.0

This is not the latest version of Mozilla Firefox available.

  • 1
  • 2
  • 3

Some Checks Have Failed or Are Not Yet Complete

Not All Tests Have Passed

Validation Testing Passed

Verification Testing Passed


Scan Testing Resulted in Flagged:

This package was submitted (and approved) prior to automated virus scanning integration into the package moderation processs.

We recommend clicking the "Details" link to make your own decision on installing this package.

Learn More

Deployment Method: Individual Install, Upgrade, & Uninstall

To install Mozilla Firefox, run the following command from the command line or from PowerShell:


To upgrade Mozilla Firefox, run the following command from the command line or from PowerShell:


To uninstall Mozilla Firefox, run the following command from the command line or from PowerShell:


Deployment Method:

📝 NOTE: This applies to both open source and commercial editions of Chocolatey.

1. Enter Your Internal Repository Url

(this should look similar to

2. Setup Your Environment

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

2. Get the package into your environment

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Copy Your Script

choco upgrade firefox -y --source="'INTERNAL REPO URL'" --version="'79.0'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade firefox -y --source="'INTERNAL REPO URL'" --version="'79.0'" 

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Install firefox
    name: firefox
    version: '79.0'
    state: present

See docs at

chocolatey_package 'firefox' do
  action    :install
  source   'INTERNAL REPO URL'
  version  '79.0'

See docs at

cChocoPackageInstaller firefox
    Name     = "firefox"
    Version  = "79.0"
    Source   = "INTERNAL REPO URL"

Requires cChoco DSC Resource. See docs at

package { 'firefox':
  ensure   => '79.0',
  provider => 'chocolatey',
  source   => 'INTERNAL REPO URL',

Requires Puppet Chocolatey Provider module. See docs at

4. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.

This package was approved as a trusted package on 28 Jul 2020.


Bringing together all kinds of awesomeness to make browsing better for you.


  • A powerful, new engine that’s built for rapidfire performance.
  • Better, faster page loading that uses less computer memory.
  • Gorgeous design and smart features for intelligent browsing.
  • Instantly import your online info and favorites from any other browser.
  • The most powerful private browsing mode with added tracking protection.
  • Firefox Quantum features: screenshots, pocket, gaming & VR, library.
  • Customization Features - addons & extensions, themes, toolbar.
  • Synced across devices - passwords, bookmarks, tabs and more.
  • Ad tracker blocking.
  • Password manager.

Package Parameters

  • /l:LOCALE - Install given Firefox locale. See the official page for a complete list of available locales.

Command-line options for installer configuration. See the official page for details and defaults.

  • /InstallDir:PATH
  • /NoTaskbarShortcut Do not create Taskbar Shortcut
  • /NoDesktopShortcut Do not create Desktop Shortcut
  • /NoStartMenuShortcut Do not create Start Menu Shortcut
  • /NoMaintenanceService Do not install Maintenance Service
  • /RemoveDistributionDir Remove Distribution directory on installation/update. (This is the default behavior of the Firefox Installer, but not for this Chocolatey Package)
  • /NoAutoUpdate Sets a policies.json file to not update Firefox and does not install the Maintenance Service


choco install Firefox --params "/l:en-GB"
choco install Firefox --params "/NoTaskbarShortcut /NoDesktopShortcut /NoAutoUpdate"
choco install Firefox --params "/l:en-GB /RemoveDistributionDir"


  • Looking for Firefox Developer Edition? Install the firefox-dev package.
  • Looking for Firefox Extended Support Release? Install the FirefoxESR package.
  • If locale package parameter is not present, this package installs Firefox in the first language which matches this list:
    1. If Firefox is already installed it uses the same language as the already installed one.
    2. The Windows system language.
    3. If Firefox does not support the system language, it will fall back to en-US.

$ErrorActionPreference = 'Stop'
# This is the general install script for Mozilla products (Firefox and Thunderbird).
# This file must be identical for all Choco packages for Mozilla products in this repository.
$toolsPath = Split-Path $MyInvocation.MyCommand.Definition
. $toolsPath\helpers.ps1

$packageName = 'Firefox'
$softwareName = 'Mozilla Firefox'

$pp = Get-PackageParameters

$alreadyInstalled = (AlreadyInstalled -product $softwareName -version '79.0')

if (Get-32bitOnlyInstalled -product $softwareName) {
  Write-Output $(
    'Detected the 32-bit version of Firefox on a 64-bit system. ' +
    'This package will continue to install the 32-bit version of Firefox ' +
    'unless the 32-bit version is uninstalled.'

$sa = ""

# Command Line Options from the Firefox installer

# Always prevent Firefox installer to require a reboot
$sa += " /PreventRebootRequired=true"

# Prevent RemoveDistributionDir by default
$sa += " /RemoveDistributionDir=false"

$sa += if ($pp.InstallDir) { " /InstallDirectoryPath=" + $pp.InstallDir }

$sa += if ($pp.NoTaskbarShortcut) { " /TaskbarShortcut=false" }

$sa += if ($pp.NoDesktopShortcut) { " /DesktopShortcut=false" }

$sa += if ($pp.NoStartMenuShortcut) { " /StartMenuShortcut=false" }

$sa += if ($pp.NoMaintenanceService) { " /MaintenanceService=false" }

$sa += if ($pp.RemoveDistributionDir) { " /RemoveDistributionDir=true" }

$sa += if ($pp.NoAutoUpdate) { " /MaintenanceService=false" }

if ($alreadyInstalled -and $env:ChocolateyForce) {
  Write-Output $(
    "Firefox is already installed. " +
    'No need to download and re-install.'
else {
  $locale = 'en-US' #
  $locale = GetLocale -localeFile "$toolsPath\LanguageChecksums.csv" -product $softwareName
  $checksums = GetChecksums -language $locale -checksumFile "$toolsPath\LanguageChecksums.csv"

  $packageArgs = @{
    packageName    = $packageName
    fileType       = 'exe'
    softwareName   = "$softwareName*"
    Checksum       = $checksums.Win32
    ChecksumType   = 'sha512'
    Url            = "${locale}"
    silentArgs     = "$sa /S"
    validExitCodes = @(0)

  if (!(Get-32bitOnlyInstalled($softwareName)) -and (Get-OSArchitectureWidth 64)) {
    $packageArgs.Checksum64 = $checksums.Win64
    $packageArgs.ChecksumType64 = 'sha512'
    $packageArgs.Url64 = "${locale}"

  Install-ChocolateyPackage @packageArgs

if ($pp.InstallDir) {
  $installPath = $pp.InstallDir
else {
  $installPath = Get-AppInstallLocation $softwareName

if (-Not(Test-Path ($installPath + "\distribution\policies.json") -ErrorAction SilentlyContinue) -and ($pp.NoAutoUpdate) ) {
  if (-Not(Test-Path ($installPath + "\distribution") -ErrorAction SilentlyContinue)) {
    new-item ($installPath + "\distribution") -itemtype directory

  $policies = @{
    policies = @{
      "DisableAppUpdate" = $true
  $policies | ConvertTo-Json | Out-File -FilePath ($installPath + "\distribution\policies.json") -Encoding ascii

$ErrorActionPreference = 'Stop';

$packageName = 'Firefox'

$uninstalled = $false
[array]$key = Get-UninstallRegistryKey -SoftwareName 'Mozilla Firefox*' | Where-Object { $_.DisplayName -notmatch "ESR" }

if ($key.Count -eq 1) {
  $key | ForEach-Object {
    $packageArgs = @{
      packageName = $packageName
      fileType    = 'exe'
      silentArgs  = '-ms'
      validExitCodes= @(0)
      file          = "$($_.UninstallString.Trim('"'))"

    Uninstall-ChocolateyPackage @packageArgs

    Write-Warning "Auto Uninstaller may detect Mozilla Maintenance Service."
    Write-Warning "This should not be uninstalled if any other Mozilla product is installed."
} elseif ($key.Count -eq 0) {
  Write-Warning "$packageName has already been uninstalled by other means."
} elseif ($key.Count -gt 1) {
  Write-Warning "$($key.Count) matches found!"
  Write-Warning "To prevent accidental data loss, no programs will be uninstalled."
  Write-Warning "Please alert package maintainer the following keys were matched:"
  $key | ForEach-Object {Write-Warning "- $($_.DisplayName)"}
function GetUninstallPath() {
    [Parameter(Mandatory = $true)]
  $regUninstallDir = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\'
  $regUninstallDirWow64 = 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\'

  $uninstallPaths = $(Get-ChildItem $regUninstallDir).Name

  if (Test-Path $regUninstallDirWow64) {
    $uninstallPaths += $(Get-ChildItem $regUninstallDirWow64).Name

  $uninstallPath = $uninstallPaths -match "$product [\d\.]+ \([^\s]+ [a-zA-Z\-]+\)" | Select-Object -first 1
  return $uninstallPath

function GetLocale {
    [Parameter(Mandatory = $true)]
    [Parameter(Mandatory = $true)]
  #$availableLocales = Get-WebContent $localeUrl 2>$null
  $availableLocales = Get-Content $localeFile | ForEach-Object { $_ -split '\|' | Select-Object -first 1 } | Select-Object -Unique

  $PackageParameters = Get-PackageParameters

  if ($PackageParameters['l']) {
    $localeFromPackageParameters =  $PackageParameters['l']
    Write-Verbose "User chooses '$localeFromPackageParameters' as a locale..."
    $localeFromPackageParametersTwoLetter = $localeFromPackageParameters -split '\-' | Select-Object -first 1
    Write-Verbose "With fallback to '$localeFromPackageParametersTwoLetter' as locale..."

  $uninstallPath = GetUninstallPath -product $product

  $alreadyInstalledLocale = $uninstallPath -replace ".+\s([a-zA-Z\-]+)\)",'$1'
  Write-Verbose "Installed locale is: '$alreadyInstalledLocale'..."

  $systemLocalizeAndCountry = (Get-UICulture).Name
  $systemLocaleTwoLetter = (Get-UICulture).TwoLetterISOLanguageName
  Write-Verbose "System locale is: '$locale'..."
  $fallbackLocale = 'en-US'

  $locales = $localeFromPackageParameters,$localeFromPackageParametersTwoLetter, `
    $alreadyInstalledLocale, $systemLocalizeAndCountry, $systemLocaleTwoLetter, `

    foreach ($locale in $locales) {
      $localeMatch = $availableLocales | Where-Object { $_ -eq $locale } | Select-Object -first 1
      if ($localeMatch -and $locale -ne $null) {
        Write-Verbose "Using locale '$locale'..."

    return $locale

function AlreadyInstalled() {
    [Parameter(Mandatory = $true)]
    [Parameter(Mandatory = $true)]
  $uninstallEntry = $(
    "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$product $version*"
  $uninstallEntryWow64 = $(
    "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\$product $version*"

  if ((Test-Path $uninstallEntry) -or (Test-Path $uninstallEntryWow64)) {
    return $true

  return $false

function Get-32bitOnlyInstalled() {
    [Parameter(Mandatory = $true)]
  $systemIs64bit = Get-OSArchitectureWidth 64

  if (-Not $systemIs64bit) {
    return $false

  $registryPaths = @(

  $installedVersions = Get-ChildItem $registryPaths | Where-Object { $_.Name -match "$product [\d\.]+ \(x(64|86)" }

  if (
    $installedVersions -match 'x86' `
    -and $installedVersions -notmatch 'x64' `
    -and $systemIs64bit
  ) {
    return $true

function GetChecksums() {
    [Parameter(Mandatory = $true)]
    [Parameter(Mandatory = $true)]
  Write-Debug "Loading checksums from: $checksumFile"
  $checksumContent = Get-Content $checksumFile
  $checksum32 = ($checksumContent -match "$language\|32") -split '\|' | Select-Object -last 1
  $checksum64 = ($checksumContent -match "$language\|64") -split '\|' | Select-Object -last 1

  return @{
    "Win32" = $checksum32
    "Win64" = $checksum64

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Add to Builder Version Downloads Last Updated Status
Mozilla Firefox 96.0.1 304648 Friday, January 14, 2022 Approved
Mozilla Firefox 96.0 239867 Tuesday, January 11, 2022 Approved
Mozilla Firefox 95.0.2 484218 Sunday, December 19, 2021 Approved
Mozilla Firefox 95.0.1 116509 Thursday, December 16, 2021 Approved
Mozilla Firefox 95.0 373327 Tuesday, December 7, 2021 Approved
Mozilla Firefox 94.0.2 406018 Monday, November 22, 2021 Approved
Mozilla Firefox 94.0.1 444564 Thursday, November 4, 2021 Approved
Mozilla Firefox 94.0 164160 Tuesday, November 2, 2021 Approved
Mozilla Firefox 521049 Thursday, October 14, 2021 Approved
Discussion for the Mozilla Firefox Package

Ground Rules:

  • This discussion is only about Mozilla Firefox and the Mozilla Firefox package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
  • The maintainers of this Chocolatey Package will be notified about new comments that are posted to this Disqus thread, however, it is NOT a guarantee that you will get a response. If you do not hear back from the maintainers after posting a message below, please follow up by using the link on the left side of this page or follow this link to contact maintainers. If you still hear nothing back, please follow the package triage process.
  • Tell us what you love about the package or Mozilla Firefox, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
  • If you use a url, the comment will be flagged for moderation until you've been whitelisted. Disqus moderated comments are approved on a weekly schedule if not sooner. It could take between 1-5 days for your comment to show up.
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