Hi, when you run a single word search, Firefox checks in the background whether there is a server at that address. This is useful to find servers on your internal network, such as http://intranet/. If you get this bar all the time, it usually indicates that your current DNS service provider is dishonest. An honest DNS will tell Firefox your query text is not a known hostname. But dishonest DNS services will send Firefox an address of a server that hosts pay-per-click advertising to "help" you find what you're looking for. Perhaps you've seen such a page if you ever typo'd an address. (If you are using DNS over HTTPS, Firefox still may check with Windows for single word queries or other host names that aren't found on the web.) With that in mind, here are two options: (1) Investigate the root of the problem and disable it or opt out of it (could take some work) (2) Set Firefox not to search single words as host names (quick) '''''Disciplining your DNS''''' I generally suggest trying something like: http://no-way-this-exists/ If you get a page of search results, check for a link near the upper right or at the bottom like: * Opt out * Why am I getting this page That usually leads to information on who/what is causing the problem and how to disable this function. '''''Don't check DNS''''' If you don't have the energy to address the DNS provider angle, this could be good enough for you for now. (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button accepting the risk. (2) In the search box in the page, type or paste '''dns''' and pause while the list is filtered (3) Double-click the '''browser.urlbar.dnsResolveSingleWordsAfterSearch''' preference to display an editing field, and change the value from '''1''' to '''0''' then press Enter or click the blue check mark button to save the change. ''For reference:'' * 0 = never check * 1 = check in certain cases (default) * 2 = always check