Firefox Community Forum

Firefox version 145.0 in Linux Ubuntu 22.04.5 LTS. When I open Firefox all tabs from previous session are gone. On "Startup" I have checked "Open previous windows and tabs". Which worked before but not now. It is very frustrating. How do I fix? The Profile Manager opens the settings and "Open previous windows and tabs" is checked. Checking "ask before closing multiple tabs" doesn't help.

I had so many instances of firefox and tabs that i decided i must organize them on tabgroups, i read they were secure enough and would be restored along with open tabs on new session. But after restarting all my "close and save" tab groups are missing! are they still saved? how can i recover them?

Recently upgraded to version 146.0 on Linux (Mint, Cinnamon)

YouTube will work fine when I first start the browser. Eventually videos will stop displaying and sidebar links will not be active.

From a separate forum article I cleared all site data and restarted Firefox. That fixes the problem for about 4 or 5 videos, then you need to rinse/repeat.

The latest incident seems to have been triggered when I tried to watch a video embedded in an X (Twitter) post. That failed. And the YT failed as a whole. X was open in a separate tab container at the time.

While I have both Privacy Badger and uBlock Origin installed, both are deactivated for YouTube.

See the attached images. The video is just not displaying, though the screen is reserving space for the player.

Both/all videos I have tested do work in Chromium.

I was positively surprised recently when the new Firefox profile manager (about:profilemanager) was introduced. https://www.tech2geek.net/how-to-use-the-new-updated-profile-manager-in-firefox-2025/ is an article about that.

However, I thought it's just a new visual UI with an in-browser switcher for the existing profiles (that I already had setup). However, it does not appear so.

The differences I see:

1. 1. 1. old profile management

• was managed by `about:profiles` or when starting FIrefox with `-P`
• is saved in `~/firefox` and the `profiles.ini` clearly and quite obviously mentions them there, so it's easy to manage them.

I also found this old support article: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

1. 1. 1. new profile management

• automatically asks on startup if more than one profile exists
• is managed by `about:profilemanager` or with the Firefox burger menu
• seems to be saved in `~/.mozilla/firefox/Profile Groups` (Linux path here) in some .sqlite files, and I do not quite understand the format. Not mentioned in `profiles.ini`.
• also, when you change something here (even like opening a profile?), you cannot open `about:profiles` anymore, because it says "Some Firefox process has made changes to your profile, […] you need to restart Firefox", only after a restart further changes would be possible, which I find quite confusing but it also indicates somehow the features belong together?

And this seems to be the new one: https://support.mozilla.org/en-US/kb/profile-management#w_whats-the-difference-between-profiles-and-multi-account-containers

1. 1. Questions

• What are the differences here (I may have missed)?
• How can the new profile feature save so few files? Is it technically called "profile groups"?
• And the most important: How can I migrate an old profile? (In order to use the new features and GUI etc. I quite like)

Hi experts,

Recently, I couldn't log in the Globus through Mozilla Firefox browser where I usually log in the Globus successfully. It just stopped and nothing happened. Could you please let me know how to address this issue? If you need any other information from me, please feel free to reach out to me.

Thanks, Jian

I'm using 121.0 for Manjaro

Today, I had a problem trying to re-load a website I had saved just the other day. I have a bunch of such websites for a technical project I am working on.

I tried loading the other saved web-sites. All had been saved as a complete file and by this browser. I have no other browser installed.

The problem was that the saved web-page kept re-loading. No forum-discussion could be found so the trouble-shooting option was entered into.

I opened Firefox in safe-mode (via the command-line call). Running a suggestion; clearing cache didn't resolve the problem (in safe-mode the saved web-page still kept re-loading with a rapid cycle)

The next "suggestion" I tried was refresh Firefox. Firefox advised that none of my saved data and settings would be lost. Well, my entire profile is gone!!! Thankfully synchronizing worked such that I could recover passwords, history etc. What are NOT recovered are the settings for websites, probably other infos too.

I have two login-accounts on my system and I have a shared, common profile for both. This was using a public folder with access rights only for those two users.

I have been using that profile architecture for months. This is now gone!! Those folders do not exist anymore. In its place are entirely new folders, their formats completely unfamiliar to me. I am recalling my latest backup but will it be of any use???

Many thanks, indeed.

I'm using Manjaro Linux and I place Firefox in a particular position on the screen. In the previous version, just before 122.0, Firefox would "remember" the last position on the screen. Now when it starts up, the window is in the middle of the screen and not to the top left as when it was shut down. Anyone else notice this?

hi there,

there is disableFirefoxUpdates

can I enable this function? can I cancel an "organization" intruding? I'm not in organization, it's my home private computer.

thank you

Good day,

when I click in Instagram in the notifications on a comment, I get redirected to to the comment section, but not to that certain comment, so I would have to scroll a lot.

Please help with that.

Thanks a lot!

I will contact Instagram about that now too, as maybe the issue is on their side, or on your side.

Regards from Germany, Johannes

I've looked for solutions, some had weird MTU settings, some needed to enable hardware acceleration in Chrome, but haven't found a solution that works. Created a new profile to try that out, but still no dice.

I can do a test recording in Google Meet, which displays my video just fine, but when playing back, it's just a black screen, and that is also what happens if I share my screen. Participants get a lot of black.

I've been using Firefox with Google meet for many years, and never had this problem before. I did report the issue in Meet, but it's not likely to attract much attention from Google.

Suggestions much appreciated.