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What does "browser.startup.homepage=about:newtab" mean?

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When I click on the Firefox icon, instead of the Firefox Home Page coming up: "browser.startup.homepage=about:newtab" comes up. What does it mean and how do I fix it?

When I click on the Firefox icon, instead of the Firefox Home Page coming up: "browser.startup.homepage=about:newtab" comes up. What does it mean and how do I fix it?

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Is this appearing in a popup or something?

You could just change your home page back to the default and see if that fixes it.

Hope this helps.

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Try to reset the browser.startup.homepage pref on the about:config page via the right-click context menu to the default value. In older Firefox versions this pref was a complex pref that could be localized. In current Firefox releases this pref has changed to a normal pref. If you see such a strange value then you may still have to older complex value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.