Prevent Search Engine Installs

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.

Supported on: Firefox 60 ESR or later
Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry PathSoftware\Policies\Mozilla\Firefox\SearchEngines
Value NamePreventInstalls
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

firefox.admx

Administrative Templates (Computers)

Administrative Templates (Users)