browser.newtabpage.activity-stream.default.sites
Supported on: Firefox 72 or later, Firefox 68.4 ESR or later
Registry
HKLM
Software\Policies\Mozilla\Firefox\Preferences HKCU
Software\Policies\Mozilla\Firefox\Preferences Options
browser.newtabpage.activity-stream.default.sites text Description
If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences