Private Browsing Mode Availability: registry value PrivateBrowsingModeAvailabilityUserHKCU\Software\Policies\Mozilla\Firefox

Policy ID
PrivateBrowsingModeAvailability
Scope
Computer Configuration, User Configuration
Supported on
Firefox 130 or later, Firefox 128.2 ESR or later
Source
Mozilla Firefox Policy Templates (version 8.3)
Category
Mozilla › Firefox

Registry

PrivateBrowsingModeAvailability

REG_DWORDUserComputer
Enabled value
Depends on the option value
Element
-
Options
ItemStored value
Allow Private Browsing Mode0
Disable Private Browsing Mode1
Force Private Browsing Mode2
Apply with .reg · CMD · PowerShell
UserPer-account setting
.reg
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Mozilla\Firefox]

; Options (use only one)
; Allow Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000000
; Disable Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000001
; Force Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000002
CMD
:: Options (use only one)

:: Allow Private Browsing Mode
reg add "HKCU\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 0 /f
:: Disable Private Browsing Mode
reg add "HKCU\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 1 /f
:: Force Private Browsing Mode
reg add "HKCU\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 2 /f
PowerShell
# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Mozilla\Firefox' -Force | Out-Null

# Options (use only one)
# Allow Private Browsing Mode
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 0 -Force | Out-Null
# Disable Private Browsing Mode
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 1 -Force | Out-Null
# Force Private Browsing Mode
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 2 -Force | Out-Null
ComputerMachine-wide setting
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Mozilla\Firefox]

; Options (use only one)
; Allow Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000000
; Disable Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000001
; Force Private Browsing Mode
"PrivateBrowsingModeAvailability"=dword:00000002
CMD
:: Options (use only one)

:: Allow Private Browsing Mode
reg add "HKLM\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 0 /f
:: Disable Private Browsing Mode
reg add "HKLM\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 1 /f
:: Force Private Browsing Mode
reg add "HKLM\Software\Policies\Mozilla\Firefox" /v "PrivateBrowsingModeAvailability" /t REG_DWORD /d 2 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Force | Out-Null

# Options (use only one)
# Allow Private Browsing Mode
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 0 -Force | Out-Null
# Disable Private Browsing Mode
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 1 -Force | Out-Null
# Force Private Browsing Mode
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Name 'PrivateBrowsingModeAvailability' -PropertyType DWord -Value 2 -Force | Out-Null