Prevent Search Engine Installs

Supported on: Firefox 60 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\SearchEngines

HKCU Software\Policies\Mozilla\Firefox\SearchEngines

Value name: PreventInstalls

Enabled: PreventInstalls = 1

Disabled: PreventInstalls = 0

Description

If this policy is enabled, the user cannot install search engines from web page. If this policy is disabled or not configured, search engines can be installed from web pages.