Block pop-ups from websites

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

Registry

HKLM Software\Policies\Mozilla\Firefox\PopupBlocking

HKCU Software\Policies\Mozilla\Firefox\PopupBlocking

Value name: Default

Enabled: Default = 1

Disabled: Default = 0

Description

If this policy is disabled, pop-up windows are allowed from websites by default. If this policy is not configured or enabled, popups are not allowed from websites.