Firefox Community Forum

I just installed Fedora KDE Plasma, and have been trying to launch Firefox, but it keeps completely freezing.

I have tried installing through snap, flatpak and fedoras database, most recently I installed from the tar.xz on the website, and tried launching in safe mode. All of these result in the same behavior.

Today I closed Firefox as usual. It wrote recovery.jsonlz4 and recovery.baklz4. (Sorry if I’m missing some details, I’m just a bit upset.)

On the next launch, it didn’t show a window (most likely due to gWSL). I knew that after the next exit it would rewrite the session files, so I backed up .mozilla. (At that moment I didn’t realize recovery.jsonlz4 was already overwritten.)

I killed Firefox and WSL, restarted, restored .mozilla, reopened Firefox — and it rewrote recovery.baklz4 with an empty recovery.jsonlz4. The session page showed nothing. I panicked, because my previous .mozilla backup is very old.

I found out there may be a way to recover if I don’t launch Firefox before copying recovery.baklz4 to recovery.jsonlz4. So I closed Firefox, restored .mozilla again, checked that the .baklz4 file was larger, copied it over the .jsonlz4, and opened Firefox. It successfully restored everything.

Why do I need to manually back up session files? Could they be versioned, or at least not replaced by an empty session?

If the only tab is about:sessionrestore, that usually means something went horribly wrong, and it shouldn’t overwrite the previous session.

Relying on third-party extensions doesn’t solve the problem. Replacing a valid session with a blank one leads to data loss.

As you probably understand, this isn’t the first time I’ve lost data because of this behavior. This time I managed to save it, but previously I didn’t know these steps and lost my tabs.

Since the last update, I am unable to log into my American Express account using Firefox (I can log in using Chrome, but Firefiox is my default browser). After entering user name and password, the little spinng arrow goes around for 8-10 seconds and goes off again - it won't to progress to the next screen . Never any error messages, it just spins awhile and stops.

Moments ago I rebooted my computer after a long day of heavy use (it's old). After rebooting and opening my Firebox Browser, I noticed all my Bookmarks were gone. I created a Firefox Bookmarks Export file on another desktop computer using a thumb drive and plugged it into my current desktop computer, and imported the Bookmarks. Great. They all seem to be there again. But the entire appearance of all the websites I regularly use have changed. I use Google Calendar and all the colors are gone. On my other computer, all the different tasks I've created still retain their colors with white lettering, but on this latest version of Ubuntu machine after the reboot, all by tasks are plain white with Black lettering. I compared the settings for Appearance on my two different computers and they are exactly the same. I couldn't Login to X on this machine after doing so numerous times, and after I logged into Bluesky, the appearance was completely different. I don't know what happened. The two attached screen grabs show the difference between this computer and my other one which still shows the color combinations that I want back within Google Calendar. Any idea what went wrong? Also, I tried to click the checkbox below that says, "Email me when someone answers the thread," and I could not. It wouldn't accept the check mark.

I lost all my bookmarks after updating. I couldn't restore them, and now I have to log in to all my accounts. Absolutely everything is gone. I've tried restoring bookmarks, but it doesn't work.

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Error code: SSL_ERROR_NO_CYPHER_OVERLAP

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Operating System: SteamOS 3.7.15 Build: 20250903.1 KDE Plasma Version: 6.2.5 KDE Frameworks Version: 6.9.0 Qt Version: 6.8.1 Kernel Version: 6.11.11-valve24-2-neptune-611-gfd0dd251480d (64-bit) Firefox Browser: Mozilla Firefox Flatpak mozilla-flatpak - 1.0 144.0 (64-bit)

When in browser and signed into account, user is able to copy obscured password information simply by clicking "Copy" in the password manager. User is more familiar with Windows systems and using Firefox browser on that system, which prompts User to input the systems PIN to verify identity.

- I'm used to using Firefox on Windows 10. Recently got a Steam Deck and am trying to relearn Linux as it's been awhile. First thing I downloaded was Firefox so I could easily copy my passwords for VPNs and accounts. Didn't think it would be as easy as clicking "Copy" in the password manager. Is there a way to set up a PIN for a little more added security. I've already created a User Account and it did prompt me once (I think), but with the portability I'd like it to ask for a PIN (shorter than password) or frequently. Thanks