Allowed Sites (Session Only): registry value Cookies_AllowSession (AllowSession)UserHKCU\Software\Policies\Mozilla\Firefox\Cookies\AllowSession

Policy ID: Cookies_AllowSession
Scope: Computer Configuration, User Configuration
Supported on: Firefox 79 or later, Firefox 78.1 ESR or later
Source: Mozilla Firefox Policy Templates (version 8.3)
Category: Mozilla › Firefox › Cookies

Registry

(list values)

REG_SZUserComputer

…\Software\Policies\Mozilla\Firefox\Cookies\AllowSessionHKCU\Software\Policies\Mozilla\Firefox\Cookies\AllowSession Current key
HKLM\Software\Policies\Mozilla\Firefox\Cookies\AllowSession

Enabled value: Depends on the option value
Element: -
Value type: REG_SZ
Value name prefix: -

Apply with .reg · CMD · PowerShell

UserPer-account setting

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Mozilla\Firefox\Cookies\AllowSession]

; Add one value per list entry, increasing the number
"1"="<enter value>"
"2"="<enter value>"

CMD

:: Add one value per list entry, increasing the number

reg add "HKCU\Software\Policies\Mozilla\Firefox\Cookies\AllowSession" /v "1" /t REG_SZ /d "<enter value>" /f
reg add "HKCU\Software\Policies\Mozilla\Firefox\Cookies\AllowSession" /v "2" /t REG_SZ /d "<enter value>" /f

PowerShell

# Add one value per list entry, increasing the number

New-Item -Path 'HKCU:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Name '1' -PropertyType String -Value '<enter value>' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Name '2' -PropertyType String -Value '<enter value>' -Force | Out-Null

ComputerMachine-wide setting

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Mozilla\Firefox\Cookies\AllowSession]

; Add one value per list entry, increasing the number
"1"="<enter value>"
"2"="<enter value>"

CMD

:: Add one value per list entry, increasing the number

reg add "HKLM\Software\Policies\Mozilla\Firefox\Cookies\AllowSession" /v "1" /t REG_SZ /d "<enter value>" /f
reg add "HKLM\Software\Policies\Mozilla\Firefox\Cookies\AllowSession" /v "2" /t REG_SZ /d "<enter value>" /f

PowerShell

# Add one value per list entry, increasing the number

New-Item -Path 'HKLM:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Name '1' -PropertyType String -Value '<enter value>' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox\Cookies\AllowSession' -Name '2' -PropertyType String -Value '<enter value>' -Force | Out-Null