Firefox redirects to https

Question

I\'m using Firefox, and while setting up a server, I have been fiddling around with redirects. Now, Firefox has cached a 301 redirect from http://example.com/ to https://exa

Answer 1

In my case, I decided to use a *.dev domain for local development. But then I tried to open the site in Firefox, and after a while I realized it uses HTTPS, even when I start the url with "http://..." I tried to right-click on the link in the History, and choose Forget About This Site, or clear the cache. But it didn't help.

Later I found out that the dev domain is in HSTS preload list these days. Which means Firefox and Chrome (and probably others) don't let you access the subdomains over HTTPS. More on it here and here.