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Override the upgrade page.

The upgrade page, also called the "What's New" page, is the extra tab Firefox opens the first time it starts after updating to a new version. It is normally a page on mozilla.org describing what changed in that release. Setting this policy replaces that page and stops Firefox from using a page supplied with the update itself.

For the page shown the first time a new profile is used, see the OverrideFirstRunPage policy.

OverridePostUpdatePage expects the URL to show the first time Firefox starts after an update:

  • A URL, such as https://example.com, replaces the What's New page with that page.
  • An empty string ("") shows no page after an update.
policies.json
{
"policies": {
"OverridePostUpdatePage": "http://example.org"
}
}
JSON schema
OverridePostUpdatePage JSON schema
{
"type": "string",
"anyOf": [
{
"format": "moz-url"
},
{
"maxLength": 0
}
]
}
Software\Policies\Mozilla\Firefox\OverridePostUpdatePage = "http://example.org"
<dict>
<key>OverridePostUpdatePage</key>
<string>http://example.org</string>
</dict>
FirefoxFirefox ESRFirefox Enterprise
Available since 60Available since 60Available since 149

CCK2 Equivalent: upgradePage,noUpgradePage
OMA-URI: OverridePostUpdatePage
Preferences Affected: startup.homepage_override_url