How do I stop Firefox from forcing https:// on local development server?

Question

I am running a development environment on my Macintosh using AMPPS.

I have a folder with my project files. I have added this to my hosts file:

127.0.0.1 www.example.com

and I have set up the virtual domain accordingly.

When I attempt to connect to the site using Firefox:

http://www.example.com

it always redirects to:

https://www.example.com

and then complains about it.

The folder has nothing else in it but a dummy index.html file.

When I test the site in lynx or in Safari or Chrome, I get to my sample site. When I test in Firefox, that’s when I get the problem.

Firefox is my main browser, so it is possible that I have a caching problem, but I cannot see any method of clearing the cache that I haven’t tried already: trying to forget the page or clearing the cache.

I have tried all the suggestions mentioned here and elsewhere, but I am obviously missing something.

How do I stop Firefox from doing this?

Similar question Firefox allow HTTP URLs (and not force HTTPS) — JamesThomasMoon
– JamesThomasMoon, Commented Sep 15, 2023 at 22:29

cluelessdev · Accepted Answer · 2019-07-17 21:40:18Z

8

Try this:

go to about:config
search for network.stricttransportsecurity.preloadlist and set it to false (double click)

answered Jul 17, 2019 at 21:40

cluelessdev

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3 Comments

alxfyv Over a year ago

It doesn't work for me. Even after the change, Firefox still redirects to https://. Firefox v. 86.0 (64-bit) MaxOS Big Sur v. 11.2.2

Andrew Over a year ago

Also does not work for me on ubuntu 20 firefox 87

ZedTuX Over a year ago

Doesn't work for me too on Elementary OS and Firefox 105.0.3 :/

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