Firefox Community Forum

How can I transfer my bookmarks to the new version of Firefox. The bookmarks are still available from the drop-down top bar "bookmarks" but they don't show on the Firefox page. I don't know how to get to the "about:profiles" page to change back to the profile that shows my bookmarks toolbar.

This is Firefox 142.0.1 on Windows 10. I prefer to have a local copy of the Firefox profile saved to a USB stick as a simple backup and for copying to another PC if necessary. I have been doing this for years, but now I am unable to do so because Windows gives me an "access denied" error for all of the files in the top-level profile directory. I cannot even open them in Administrator mode. If I try to copy the profile directory as described in your help pages, it says that I need permission from the account that I am logged in as in order to access the files! I have been using Windows since version 3.0 and I cannot understand what Firefox has done to make the profile inaccessible to everything but itself. Obviously, Firefox is able to read the files without additional permissions, so why can't I?

Hello everyone,

I’ve been using Firefox for 5 years now and I absolutely love it. I recently bought a new laptop, but I’ve run into an issue. On my old laptop, I was able to use multiple Firefox profiles at the same time—similar to how Chrome handles profiles.

On the old setup, when I clicked the three-line (menu) button, I could see my second profile there and switch between profiles with just one click. After installing Firefox on my new laptop, I can’t find that option anymore.

I know some of you might suggest using about:profiles to switch profiles. Yes, I’m aware of that method, but I find it inconvenient because I’d have to type about:profiles every time, which is a bit of a time waste for me. I really want the same quick-switch option I had before.

How can I get that functionality back? Any help or suggestions would be greatly appreciated!

I’m already using the latest version (142.0.1, 64-bit).

Thanks

I have 3 different profiles on my Desktop Firefox, and I'm able to change between them and even set some commands on CLI to switch between them easily, opening one or another.

Now, my question is: How can I do such a thing on mobile? I only linked my main account, and as far as I understood, I cannot link to multiple and switch on demand. Is there any way? Am I missing something?

I checked the tutorial on how to setup profiles and the profile manager doesn't seem to exist on mobile.

Thank you for your attention!

With the new profiles feature, is there a way to set a default profile when opening links? I have set up "work" and "personal" profiles but when I click on a link from another app (i.e. Slack) Firefox opens the link in (what seems like) the last profile I was using when I have a window open for each profile. Since I'm doing this on my work computer, I want all links to open in the "work" profile by default. Is this possible?

After reinstalling the browser, the folder "Old Firefox Data" appeared, which requires administrator permission. It does not allow you to grant yourself permission and change the owner. How can I delete it? Has anyone encountered the same problem? Please help

Could someone help me start over again and get it right, instead of a mess? Is it possible to somehow start from scratch or fix what I am doing wrong? Is there some way to open a new account and dump the mess I'm facing now?

On my Macbook I have four accounts. I loaded Firefox via one of them. I do not want Firefox running or its 'background processes' in the other accounts as I do not use it there. If I switch account from the one in which I use Firefox to another does Firefox keep running processes?

I just update firefox but all my none of my bookmarks loaded. I share my computer with my husband. He has a different account on this same computer and his bookmarks are showing up on my side, but mine are nowhere to be found. Previously we have had separate bookmark lists and all was fine. I don't know where my bookmarks went.

How do I get them back and put on "my side" and still have my husband's on his side?

Starting with Firefox 141, I noticed the profile folder is locked down by Mozilla by way of folder permissions, to the extent that I (as administrator) cannot even take ownership of the folder. Even after I completely uninstalled Firefox and restarted my computer I can't take ownership of the folder, nor can I delete it - access is simply denied. I have to literally boot up with a Linux Live distro to be able to delete it. This is invasive and NOT OK!!

I work with multiple profiles that require backups and be copied. I also have a 'master profile' which is set up to co contain all my settings and addons - when I require a new profile I simply copy it over and voila. Not even this is possible anymore, as Mozilla has locked down the entire folder tree, I can no longer copy a new profile into C:\Users\*USER*\AppData\Roaming\Mozilla\Firefox\Profiles.

I also cannot copy existing profiles (and therefore also not able to backup) out of C:\Users\*USER*\AppData\Roaming\Mozilla\Firefox\Profiles - access denied. This is uncalled for by Mozilla. I have complete removed Firefox from my computer, including registry entries, and even after that I'm still denied access and cannot even delete C:\Users\*USER*\AppData\Roaming\Mozilla.

The only solution to to any of the above issues is to either reboot into Windows Safe Mode or bootable media of another OS. But this is totally impractical - Mozilla cannot expect of me to stop all my work and restart my PC every time I need to perform any of the above mentioned issues.

This is highly invasive by Mozzilla - to not even be able to delete a profile folder without any trace of Mozilla on my computer???? Come on, FIX THIS !!!

Will Mozilla please provide the solution?

I recently reinstalled Debian 13 on my workstation. This included installing Firefox-esr from the Debian repositories so the version before and after the reinstall is the same. Despite this, Firefox refused to start until I created a new profile - insisting that my profile was from an older version.

To add insult to injury, it offers a method to import data from Chromium (which I use rarely) but not from a previous Firefox profile.

Firefox Sync works so far as it goes, but not everyone wants to use it. Importing from a local profile should be easier to implement than remotely syncing - especially given that Firefox clients may not be the same on different devices.

And, of course, the initial point is that Firefox should accept a user profile when it was created by the same version. After all, when I upgrade Firefox on Debian, I'm not required to create a new profile. Why should I be forced to do it when I reinstall the same version?

Firefox created a new Profile for me during a recent update and ignored the Profile I had been using for many years.

That probably occurred because Firefox couldn't find the original Profile. I had moved it to C:\0-FFox\ to shorten the length of file names. I had been getting File-Name-Length errors, which ended after moving the Profile closer to C:\.

Now I can't access or use the original Profile. I've researched the ins and outs of Profiles but can't find a solution to this problem. I want to add my old Profile to the new Profile created by Firefox and maybe switch between the two, or maybe revert to using only the old Profile. But I can't figure out how to do that. Adding a Profile seems to imply adding a new Profile and not an old one.

I sincerely hope you can help me solve this problem!

Many thanks! Wayne

Dear Mozilla team,

On my Firefox browser I can't see the icon for create new profile, even though I already updated it. Please check and fix it for me and other user. Thank you!

I made the mistake to following Mozilla's advice on why my tabs stopped coming back after I closed out, despite the fact that I had that selected in my settings. Now I'm stuck with an "Old Firefox Data" folder on my desktop and I can't remove it because I need administrator privileges -- but it's my personal PC. WTF

Hi - Firefox placed an 'Old Firefox data' folder on my desktop and I am unable to delete it. I'ver tried third party apps, logging in as administrator, command line delete, uninstalling FF but am still stuck with it and my network settings are wrecked so I can't re-establish connection to the internet on that machine. Anyone with any suggestions as to how I get rid of the 'Old Firtefox data' folder ? Many thanks...

I opened up Firefox just now to find that my two profiles currently in use are completely inaccessible. I was faced with a "Create Profile" dialogue that launched me into a brand new profile with none of my settings, keybinds, cookies, extensions, anything. Despite this, I know for a fact that my old profiles are *still* there. As you can see my profile folders are right there, with all their data intact as far as I can tell from inspecting their contents, yet they are not accessible from the about:profiles.

Please help me. What is happening with the profile manager? How do I access those old profiles?