OverrideFirstRunPage

Override the first run page. If the value is an empty string (""), the first run page is not displayed.

Starting with Firefox 83, Firefox ESR 78.5, you can also specify multiple URLs separated by a vertical bar (|).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: welcomePage,noWelcomePage
Preferences Affected: startup.homepage_welcome_url

Windows (GPO)

Software\Policies\Mozilla\Firefox\OverrideFirstRunPage = "http://example.org"

Windows (Intune)

OMA-URI:

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/OverrideFirstRunPage

Value (string):

<enabled/>
<data id="OverridePage" value="https://example.com"/>

macOS

<dict>
  <key>OverrideFirstRunPage</key>
  <string>http://example.org</string>
</dict>

policies.json

{
  "policies": {
    "OverrideFirstRunPage": "http://example.org"
  }
}