Keep cookies until Firefox is closed

Supported on: Firefox 60 or later, Firefox 60 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\Cookies

HKCU Software\Policies\Mozilla\Firefox\Cookies

Value name: ExpireAtSessionEnd

Enabled: ExpireAtSessionEnd = 1

Disabled: ExpireAtSessionEnd = 0

Description

If this policy is enabled and cookies are allowed, they will expire when Firefox is closed. This setting is ignored if this policy is disabled or not configured or if cookies are not allowed.