(In reply to whelderwheels613 from comment #4) > If I go to The Privacy & Security settings, and set "Firefox will [Never remember history]", I am unable to navigate to that website using `http://`, even with `network.stricttransportsecurity.preloadlist` set to false. That setting puts you in private browsing mode. In Private Browsing there is the "HTTPS first" setting `dom.security.https_first_pbm` which was not one of the prefs you disabled in comment 0. There is a per-site exception mechanism for HTTP Only that we are working on bringing to HTTP First.
Bug 1749015 Comment 7 Edit History
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(In reply to whelderwheels613 from comment #4) > If I go to The Privacy & Security settings, and set "Firefox will [Never remember history]", I am unable to navigate to that website using `http://`, even with `network.stricttransportsecurity.preloadlist` set to false. That setting puts you in "permanent private browsing" mode. In Private Browsing there is the "HTTPS first" setting `dom.security.https_first_pbm` which was not one of the prefs you disabled in comment 0. There is a per-site exception mechanism for HTTP Only that we are working on bringing to HTTP First.