1842076 - HTTP sites report SSL errors

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Alexander Weber]

I have a couple of HTTP sites I use internally but the have a public FQDN and some of them are even available in the Internet without SSL. From time to time I cannot access them in Firefox, I receive: SSL_ERROR_RX_RECORD_TOO_LONG - but I can access the same pages perfectly in Chrome and Edge, or from Firefox.
What I am wondering about that it looks like it it tries to access the pages over HTTPS, even though I explicitly request an HTTP site but it magically seems to become HTTPS in the URL bar.
I found several articles (e.g. https://itadminguide.com/disable-https-redirect-in-firefox/) but it seems that none of them work sustainable for more than a couple of weeks.
Sometimes I have the same issue on Firefox for Android, then usually the Firefox on PC works.

This behavior is extremely annoying, I cannot trust Firefox anymore when it tells me the website is not available, I always have to double check with another browser or ping. How can I prevent Firefox from changing what I write in the URL or force Firefox to query the URL as I enter it?

Comment 1

[Alexander Weber]

neither

• browser.fixup.fallback-to-https: false
• browser.urlbar.autoFill: false
• HTTPS Only disabled in settings
• HTTPS Only enabled and correct exceptions set
  and all possible combinations of them

but

• browser.fixup.alternate.protocol: http

fixed it for me