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I created multiple profiles with the new [management] feature. Amazing, I've been waiting for it for years!

If I open all my profiles I can distinguish them since they all have a different icon. I can also pin all the profiles (Keep in Dock) to the MacOS dock.

When I quit all Firefox instances, I would like to be able to immediately jump back to the desired profile.

Instead I get multiple Firefox icons (without the icon profile, that disappear after I quit Firefox). I find this inconvenient.

Hello I got a pop up or it was new tab informing about new firefox functions. It was about profile creation and management. Now i have two profiles and cant switch back to my old one. I cant seem to be able to delete new profile to return to my old one.

This afternoon, I clicked on a link from an email and for the first time got a choose a profile pop-up. I do not want this; I have read info on Mozilla and elsewhere about its purpose but it doesn't say how to just stop the pop-up - there should be an option just stop the pop-up because I don;t want to have to choose amongst options. I have started copy-pasting the links in emails and going to Chrome and will seriously have to reconsider using Firefox of this continues. I don't want to have to type about:config or anything - this should have been an opt out or opt in thing and I want out. Thank you for your help.

Hello, i am currently woking on an issue inside of the latest version of thunderbird. We have the data file for thunderbird located on the desktop. It shows as 37gb of data. however when we try to open the data file from inside of thunderbird. We cannot see any of the information from the folder. If i go all the was into the data file directory and select sub folders, they will open inside of thunderbird and show correct data. however, when i set thunderbird to open the entire directory with its sub folders, the application does not display any of the sub folders or information from inside the folders. We have attempted to go into properties and repair the file from inside thunderbird. It shows as 0kb file inside of thunderbird. it shows as a 37gb folder on the desktop. Once again to clarify, i can access specific directories inside the data folder but not the data folder as a whole. Any support or suggestions would be greatly appreciated. Thanks You

Running Windows 11. Recently there is a small gear symbol on the Firefox icon in the Taskbar. I don't want it there and it's irritating as hell. Apparently it has something to do with profile. I don't care what it has to do with, I want it to go away. I went to about:config and set browser.profiles.enabled to false, but every time I restart Firefox, it apparently gets set to true again.

There is no reason for Firefox to have forced this visual change on users. How do I make the gear go away permanently? The gear goes or Firefox gets uninstalled and I'll go back to Chrome.

I have used Firefox for years, both out of conviction and to help protect my privacy, even though I often put up with images and forms not displaying on web pages.

Then, three times in two months, after restarting Firefox, I found all my tabs, bookmarks and browser history had disappeared. The only thing I did between restarts was to run Wise Care 365 to clear some space on my laptop, something I had done hundreds of times before.

The first time the loss occurred I found I had a new profile, a feature I neither wanted nor was consulted about. At least I was able to get back to my original profile. The next two times this proved impossible.

Firefox "support" was of no use. Multiple searches produced nothing which helped. After agonising hours, I was able to retrieve my bookmarks and my Firefox browser history through Microsoft Edge. But as a writer and (award-winning) journalist I cannot afford to risk losing my research and links.

So although I disapprove of some Microsoft business practices. I am moving to Edge. If I have missed something that makes sense of this, I would be pleased to hear it. In the meantime, Mozilla needs to improve its product and customer service.

Wishing its customers well,

Francis Shennan

My C: drive is almost out of available memory and the following profile, jrqu4wd0.default-release, is the culprit. If I delete it what affect will it have on Thunderbird.

I have created two profiles using the new functionality that is accessed using the "hamburger" or three horizontal lines menu. I want to open one profile at times, but the other at different times. I can only specify a default profile for initial browser start, or to have the browser make me choose each time. Either of these options mean that I have to go through extra steps to launch any profile beside the default. This effectively makes the new profiles less useful to me than the profile manager that has been around for much longer.

Searching for help online has led me to several suggestions to create shortcuts that use the -P "profile name" switch for each profile. This is out of date because the profiles I can access from the command line bear no connection to the ones I have created as described in the above paragraph. They are only the ones I have created using the (old) profile manager from the profile manager in about:settings.

Did I miss something, in other words is it possible to do something similar with the new container profiles as I can with the original config profiles?

I set up Thunderbird on Debain 13 OS "Trixie" and then migrated (or tried to) my profiles.ini and attendant email folders to Ubuntu 24.04. I have done this before between Linux and even Windows installs, copying the folders over. Usually that is all you need to do to migrate emails and 'set up'. However, migrating from Debian to Ubuntu causes issues, namely the import is rejected by TB. At first, I thought perhaps Debian is using a newer version of Thunderbird and Ubuntu uses an older version, so I upgraded Thunderbird to a newer version. Import of profiles and folders still crash. This is using the profile import tool in TB.

I have a lot of emails via IMAP and it takes a long time to set them up and about ten gigs worth of emails. Is there anything that can be done?

Hello,

I have a personal profile and a work profile on Firefox.

Both profiles have a short cut on the desktop to their webmails. At present when I double click either of the shortcuts, Firefox starts and presents the Windows to select the profile to use.

Is there some way to specify in each shortcut which profile it should use to open the webmail?

Thanks Neeraj

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 went through the process of importing all of my old profiles into the new profile manager and I, for one, am stoked that we are joining the big leagues with regards to profile management. This has been a feature that I have been waiting for for quite some time now. I have an extension that allows me to easily switch between the old profiles but a proper, built in solution was necessary.

That is until I launched Firefox the next day and was greeted with my work profile instead of my personal profile. I started digging through the settings and it seems that this is the intended default behavior for profiles. The last profile you had open is the profile that will open by default.

It's fine if the developers want that to be the default but what I also find strange is that I cannot, for the life of me, find a way to change this behavior on Windows. I found it on Linux (I think??) but I dont see a flag for it in the usual places. Maybe I missed it. That is why I am here.

1.) Is there a way to change this default behavior for the new profile manager? 2.) If not, can we plan to add that feature? Currently, this behavior makes the new profile system unusable for me because I need my browser to open to my personal profile when I open a new window.

My Windows 11 laptop became corrupted and the os had to be reinstalled with Microsoft's help. In the midst of all this I did not think of backups sadly. After the restore I started to put my apps back on and without thinking, I installed Thunderbird. I realized immediately my mistake when I saw only new email and no local folders.

The Windows restore created a windows.old directory and I see my profile and configuration files in it. I want to use those old files but I don't know where to copy them exactly. There is some confusion on my part about where the startup is happening for Thunderbird. I really need to have access to all my old mail and local folders.

I'd appreciate any help in this matter. Thanks, Sue

Hi I had a systems crash and did a windows 10 reinstall. Windows created a folder windows.old. In the folder is users/"username"/appdata/local and roaming/thunderbird/profiles/ In the profiles folder for example I have a profile 34eu8280.2020. I transfered this folder to the newly installed thunderbird folder under roaming/thunderbird/profiles/ Next windows+r entered thunderbird-p. Create profile, entered 2020 as profile name, chose folder, entered 34u8280.2020, select folder, finish. In profile manager selected 2020, work offline, unchecked use selected profile without asking at startup, start thunderbird. Profile not showing up only account setup page.

At a lost as to how to proceed.

Any help would be appreciated in restoring profiles

Stan

Yes, I'd like to use the same account on both of my profiles.

I understand that for some users, this may be confusing.

In my case, the only reason for different profiles is that I need to use a Proxy Server for some websites, and no proxy for other websites. Manually switching proxy settings is painful, and doing so causes traffic for my other tabs/windows to go to the proxy, which I do not want.

I have a main (set of) windows (and its tabs) going straight to the internet, then I have a separate window (and its tabs) configured to go through a proxy (SOCKS5 in this case). I want all other settings, bookmarks, passwords, etc. to be identical to both. I end up having to logout of my main profile, log into the other profile to sync settings, log out of there, and log back into my main profile.

Is there a valid technical reason why an account on the same FireFox installation cannot be shared between two profiles?

I can do this on multiple computers (same account, different computers/profile), seems odd it is restricted to not allow on the same computer.

I have an alternative solution: Install FireFox natively, then install FireFox as AUR or FlatPak, but not sure this will collide as this both uses the same profile directory. Hum...

Wayne

It started with duplicate Archive and Drafts folders...so I checked TB help, and it gave me several suggestions, including going to my Profile folder and deleting duplicate folders from there. Everything seemed fine...until I realized that suddenly TB has NO emails later than 2022! I went in to Gmail to see if I could recover them...but they're all missing there as well. In my business account--also through Gmail, but managed through my domain name--not just my Inbox, but EVERYTHING is gone. It's as if I never existed.

This is extremely upsetting: I teach and have my own business, and losing all my emails is catastrophic.

Can someone please help?