In the past, the Firefox homepage was localizable that’s why it ended up being a complex preference. So why is the browser homepage a complex preference? Complex preferences are used when you want to be able to translate a preference value.

Pref('', 'chrome://branding/locale/browserconfig.properties') įrom there, we can look in browserconfig.properties to see the value: To see the true value, we can look in the configuration file for Firefox: Although when you go to about:config and search on and see about:home as the value, that is not the true value of. So what’s unique about the preference that it’s default values cannot be set like other preferences in the autoconfig file?Ĭomplex preferences are preferences whose default value is a pointer to a properties file that contains the value of the preference. This post should clear things up (and show you how to make it work). Recently I’ve seen a lot of questions around why defaultPref in an autoconfig file doesn’t work to set the Firefox hompage.

Mozilla firefox homepage registry entry