Hi, that looks like the "Title Bar." There's a little button in the Customize tab to turn the Title Bar on and off. This article will get you into that feature, then look for it toward the bottom: [[Customize Firefox controls, buttons and toolbars]] Was that it?

Also, your Firefox identified itself to the forum as version 47. As you may know, the current versions of Firefox are: * Regular release: 54.0.1 ([https://www.mozilla.org/firefox/all/ Installers]) ([https://support.mozilla.org/kb/npapi-plugins Plugin Info]) * Extended Support Release (ESR): 52.2.1 ([https://www.mozilla.org/firefox/organizations/all/ Installers]) ([https://www.mozilla.org/firefox/organizations/faq/ FAQs]) ''(Note for 64-bit Windows users: [[How to switch from 32-bit to 64-bit Firefox]])'' If something is holding you back from upgrading Firefox, please let us know so we can suggest solutions or workarounds. Version 47 is not secure; Mozilla discloses [https://www.mozilla.org/security/known-vulnerabilities/firefox.html security flaws] after each new release. If you think you have been updating Firefox, perhaps it's this: sometimes Firefox reports the wrong version because that information was saved in a preferences file. More information and the fix: [[How to reset the default user agent on Firefox]].