SearchEngines: PreventInstalls

Prevent installing search engines from webpages.

Compatibility: Firefox 139, Firefox ESR 60
CCK2 Equivalent: disableSearchEngineInstall
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchEngines\PreventInstalls = 0x1 | 0x0

Windows (Intune)

OMA-URI:

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Search/SearchEngines_PreventInstalls

Value (string):

<enabled/> or <disabled/>

macOS

<dict>
  <key>SearchEngines</key>
  <dict>
    <key>PreventInstalls</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SearchEngines": {
      "PreventInstalls": true | false
    }
  }
}