User Agent: Mozilla/5.0 (Windows NT 10.0; rv:51.0) Gecko/20100101 Firefox/51.0 Build ID: 20170125094131 Steps to reproduce: see below Actual results: see below Expected results: This is not a bug - but an enhancement request. I wish to ask that there will be configuration option to choose if the default protocol will be either HTTP or HTTPS. Meaning, if the user does not explicitly specify any protocol prefix – the selected value of this option will be used as the default protocol. This setting can also implement a behavior (preferred as another, sub, configuration to the above configuration) that the fallback to the above default selection will be the other value – meaning, for example - if HTTPS was selected as the default protocol and a site is not responding to this protocol – FF will try, by redirecting itself, to the HTTP version of the target site. If this option will be off or simply would not exist – if the site would not response to the default protocol – the connection will fail. My view is that the default should be HTTPS for a more secure browsing. A similar idea is realized using the extension of " HTTPS Everywhere", https://addons.mozilla.org/en-us/firefox/addon/https-everywhere/, but I believe it should be built into FF. Thank you.

FYI: https://addons.mozilla.org/firefox/addon/smart-https/