Firefox Community Forum

I sent message below to Bluesky support and have tried all their suggestions (all relating to Firefox), but to no avail.

MacBook Pro OS 10.14.6. Yesterday (9Dec2025) I could open Bluesky & see my profile but could not add a new post. I then did an ‘age verification’ and received confirming emails. When pressing ‘New Post’ button just went to blank page. Under ‘notifications’ at the top, was a message “''''! r.countGraphemes is not a function''''”. I am accessing using ‘Firefox 115.31.0esr (64-bit)’. I have deleted caches, re-started ‘Firefox’ and re-signed into Bluesky, but problem persists.

Could you please advise how I can overcome this problem. Thank you, best regards.

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?

Hi, I have had many successful years using Firefox until 4 days ago. I uninstalled Firefox in order to remedy a recurring missing bookmarks issue.

• I used the 'full' version to re-install - install proceeded to around 50% then crashed my system.
• I uninstalled the remnants and tried to install using the 'stub' installer, it crashed immediately
• I uninstalled all anti-virus software, this time the full installer ran all the way through but when I clicked on Launch Firefox, my system crashed again.
• After each crash, the system restarted and remains stable, nothing else appears to be affected.
• Basic diagnostics, returns no violations
• Each crash returns - stop code: Critical_process_died (0xEF)
• my Win 11 version 24H2 osb 26100.7462, FireFox version 146

any ideas ?

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)

I was having problems with the firefox browser. This has never happened. I always use firefox and the company said that firefox was compatible to there sight but I could not access.

Some of the installations seem to be blocked by Microsoft if you are using a Microsoft system. If the Software being downloaded is not sold by Microsoft store, Microsoft blocks it or deforms it. During any update, Microsoft removes MusicBee and some other software not purchased from Microsoft store

After both a MS and Firefox update, I have lost all my Firefox bookmarks

I have viewed several videos online that showed how to restore them, they seemed straightforward enough, but I always hit a dead end.

Firefox>menu>Bookmarks>Manage Bookmarks>LIbrary>Import And BackUp>Restore>ChooseFile

Once I get to Restore, there are no dates available to me to pick from.All I get is Choose File, but when I click on that, nothing happens. Dead end.

Many thanks for any help. Jay

A WHILE BACK I OPENED FIREFOX TO SEE THAT ALL MY PASSWORDS WERE DELETED. I HAVE BEEN TRYING TO GET THEM BACK WITH NO LUCK . DO YOU POSSIBLY HAVE MY PASSWORDS KEPT SOMEWHERE ?? OR AM I JUST OUT OF LUCK ??

Firefox used to have my background colors, and on the latest update, my pull-down menu and tabs are robin's-egg blue. I can't figure out how to get my colors back, and I hate that color.

How the hell do I get back control over my colors?

Svp, comment changer la couleur de la barre latérale ?

La mienne était toujours blanche, mais vient de changer à mon insu pour du bleu ...

Merci de m'aider.

Using Firefox ESR 115.30 in Windows 7 Ultimate, I routinely open multiple tabs, then, at the end of the day or session I'll bookmark them all into a new folder and close them all.

Later, I might return to that folder and choose to open say, 5 of the group. Is there a way to select all 5 (without opening any) and once I've finished selecting them, have all 5 open at once? Rather than just one at a time? So far it seems that I have to open them one by one.

I have a Mac with Sequoia update but my Mac is not good with memory so when I have a new install version it will probably crash my Mac. How might I stop automatic installation by Firefox?