Services.obs.addObserver((event) => {
      window = BrowserWindowTracker.getTopWindow();
      window.gBrowser.selectedBrowser.focus();
    }, "browser-open-newtab-start");
  } catch(e) { Cu.reportError(e); }

Hi. Similar to this question: https://support.mozilla.org/ln/questions/1291938 I would like to know how to customize "autoconfig.js" or "firefox.cfg" so that the home page is focused instead of the address bar when I open Firefox. I the linked question, the following solutions works fine for focus content on New Tab: Services.obs.addObserver((event) => { window = BrowserWindowTracker.getTopWindow(); window.gBrowser.selectedBrowser.focus(); }, "browser-open-newtab-start"); } catch(e) { Cu.reportError(e); } It works fine, but I can't make it work for the Homage page when it's configured to open a local file. I tried to bind the "window.gBrowser.selectedBrowser.focus();" action on the "browser-open-homepage-start" event but it has not effect. Thanks.