Firefox Community Forum

This has now happened three times. I implemented the new profiles feature a few days ago, and have three profiles. The issue is that my main profile, every time I reboot my computer/open firefox forgets all my logins. I use a password manager and don't store them in firefox ; this has never been an issue before. It is happening on the same profile each time. My bookmarks/extensions stay the same. This is happening on sites even when I have clicked 'keep me logged in'. There is no site/login that is unaffected - it seems to reset my login status I want to reiterate this is all happening on the same profile - this is not an issue of logins not carrying between different profiles The only other setting I changed is auto-storing passwords on firefox [It had saved my master password accidentally, so.] But there were very few passwords actually stored there, and those sites worked before. I am on Win 11 and have had no issues previously

Hi folks -

I've just seen the update that firefox now allows "profiles" for different purposes (e.g. work, fun, etc.) which seems really handy. But I'm trying to wrap my head around how to approach restructuring my current setup. In particular, do these profiles *all* sync with my mozilla account? Or do I need a separate mozilla account for each profile? (if so, that sort of defeats some of the utlity here unless you're sharing the PC).

I can't tell from the support article, doesn't seem to address this, but you do need to login again if you set up a new profile.

Thanks, Patrick

I switched to Firefox a few months ago and I've been using the "about:profiles" page to mimic chrome's profile feature. I have 3 profiles, each with their own Mozilla account. How can I migrate these to the new profiles system?

I have several profiles which were created using About:Profiles. With the arrival of the new official "Profiles" function I had thought this would pick up my existing profiles and make switching between them easier.

It doesn't since the new official "Profiles" function doesn't see my existing profiles. Am I missing something here, or is the new official "Profiles" function somehow different than the previous, manual profiles system?

Hi, I do not understand the new profile management feature of Firefox and how it relates to sync. I am logged into my Mozilla account that syncs bookmarks, and I use the default profile that I renamed to "personal". When I switch to a newly created "work" profile, I am no longer signed in.

Will the new profiles "personal" and "work" be synced to my account once I log on to both? I am using Firefox on several PCs and I don't want to recreate profiles such as "personal" and "work" on all the PCs manually?

Thanks for a reply.

I have Firefox installed on both my desktop and my laptop. On my laptop, I am able to create and manage profiles; however, on my desktop, there is no option available in the menu (the hamburger menu) to do so.

I have verified that both devices are running the latest version of Firefox, which includes the profile management feature, but I am still unable to access it on my desktop.

Firefox will open 2 instances when my computer restarts sometimes, 1 instant with the tabs that were current when the laptop restarted, and 1 instance which is a very old instance that is referencing something somewhere.

My question - how do I remove that old instance? I just bought a new WIN11 laptop and it's now happening on that laptop as well.

Thanks in advance!

new firefox update today plus windows update - get message "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." Have tried to restore - no luck. Other bookmarks - empty.

Lost all bookmarks

I imported my bookmarks.json from another computer, via e.mail as I have always done for many years and used it to Restore my bookmarks.

As it has happened a few times before the restoring went apparently well and I can find my bookmarks in the Library (via Manage Bookmarks) but the toolbar is still showing the previous content evn after restarting Firefox.

As I have done in previous cases I looked up for the places.sqlite file but could find it.

Here is what I did find:

<startcode>

arthur-lifebooke743:[arthur]:~$ ls /home/arthur/.mozilla/firefox

cajynx3c.default-release   installs.ini      'Pending Pings'    profiles.ini

'Crash Reports' mfe5h239.default 'Profile Groups' arthur-lifebooke743:[arthur]:~$ ls /home/arthur/.mozilla/firefox/Profile\ Groups 4d0dfc77.sqlite 4d0dfc77.sqlite-shm 4d0dfc77.sqlite-wal arthur-lifebooke743:[arthur]:~$ ls /home/arthur/.mozilla/firefox/mfe5h239.default/ times.json arthur-lifebooke743:[arthur]:~$ ls /home/arthur/.mozilla/firefox/cajynx3c.default-release/ addons.json key4.db addonStartup.json.lz4 lock AlternateServices.bin logins-backup.json bookmarkbackups logins.json bounce-tracking-protection.sqlite minidumps broadcast-listeners.json notificationstore.json cert9.db permissions.sqlite compatibility.ini pkcs11.txt containers.json places.sqlite content-prefs.sqlite places.sqlite-shm cookies.sqlite places.sqlite-wal cookies.sqlite-wal prefs.js crashes protections.sqlite datareporting search.json.mozlz4 domain_to_categories.sqlite security_state domain_to_categories.sqlite-journal serviceworker.txt extension-preferences.json sessionCheckpoints.json extensions sessionstore-backups extension-settings.json settings extensions.json shield-preference-experiments.json extension-store SiteSecurityServiceState.bin extension-store-menus storage favicons.sqlite storage.sqlite favicons.sqlite-shm storage-sync-v2.sqlite favicons.sqlite-wal times.json formhistory.sqlite webappsstore.sqlite gmp-gmpopenh264 webappsstore.sqlite-wal handlers.json xulstore.json arthur-lifebooke743:[arthur]:~$ ls /home/arthur/.mozilla/firefox/cajynx3c.default-release/

<endcode>

My question is: "Should I delete </home/arthur/.mozilla/firefox/cajynx3c.default-release/places.sqlite> since there is no such file in the <Profile Group> folder?

Hello,

I received a popup tab about creating separate profiles. I am still not seeing an option to create another profile, in my case keep personal and work browsing separate on my work computer. The articles I have read do not seem to fit my situation. Firefox is up to date. Thank you for your help.

Do I have to be logged into an account to use profiles? I'm on my work computer on which I don't log into my account and "Profiles" option does not show up on my toolbar.

Hello, I have two profiles, one for work and one personal. I used two different email addresses for them. How can I merge these together for the new profile management?

I recently upgraded to Mac OS Tahoe 26.0.1 and opened Firefox as usual. None of my accounts are visible and when I try to follow instructions to go to settings and find my profile I cannot do that either. I cannot change the search location when the account settings window opens.

I thought to do an update but everytime I go there I get the message that Firefox is up to date.

Does anyone have a solution?

My version of Firefox wont save History, Bookmarks or Downloads. I've made sure the privacy settings are correct and have tried reinstalling Firefox several times. It also wont let me drag a link from the address bar to the bookmark bar anymore like it used to. Any help with this would be much appreciated... Thanks!

The recent update to Firefox 144 seems to have completely broken my profiles. Previously, I had an additional profile that I could access and manage very easily from the about:profiles page.

After the update, clicking on "Launch profile in new browser" brings me to a completely blank screen. I can type in the search bar but after pressing enter absolutely nothing happens. (attached image)

I still have the data down the root directory. I tried following the instructions in this post https://support.mozilla.org/en-US/questions/1513880 to transfer my data to a new profile created from the new profile manager, but despite copying all the files from my old profile into the new one, absolutely nothing changed.

Honestly I would rather have the browser from the about:profiles page working again, but if that's not possible how do I transfer my profile data to the new profile manager?

I'm on windows 11, but I don't know why Firefox's troubleshooting page thinks I'm on Windows 10, if that matters.

I don't have a Profiles menu under the Account button on the main toolbar. My Firefox was just updated and the update tab info talked about the new profiles feature as if it was available. Is this rolling out in phases or should I be seeing it?

I have version 144.0, updated on 10/14/2025.

Thanks.