Firefox times out when connecting to a site with URL redirection unless HTTPS protocol is explicitly typed
I am running Firefox Developer Edition 92.0b9 on macOS Monterey 12.0 Beta 6 (21A5506j).
I noticed lately that I couldn't open some sites, either when I tried to follow a link or typed the URL in the address bar. After a few trials and errors, I think I have identified a pattern but no idea of what the root cause is:
- the sites I am trying to access all redirect to a different URL;
- I can open the sites just fine if I explicitly type `https://` in the address bar.
A few of the sites I am struggling with:
- maps.google.com (--> https://www.google.com/maps), but https://maps.google.com will work;
- epson.sn (--> https://support.epson.net/setupnavi/), but https://epson.sn will work.
I noticed that I could open the above URLs just fine in a Private window, so tried the following to no avail:
- Clear cache;
- Restart Firefox in Troubleshooting Mode (still on as I am writing this);
- Install Firefox Beta side-by-side;
- Completely uninstall Firefox and remove the existing profile, before doing a fresh install.
None of the above solutions work and I am a bit stumped. Safari, Chrome and Brave all work fine.
Firefox may still have those unwanted redirects stored in the disk cache from older visits and uses them automatically.
You can remove all data stored in Firefox for a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").
Using "Forget About This Site" will remove all data stored in Firefox for this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data for that domain that you do not want to lose then make sure to backup this data or make a note.
You can't recover from this 'forget' unless you have a backup of involved files.
If you revisit a 'forgotten' website then data for that website will be saved once again.