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Firefox update deleted all of my profiles, history, bookmarks, and tabs

Today I was prompted to restart Firefox. When I did, I got a homepage that said "Congratulations on 150 versions of Firefox" or something like that. Then I shut my comp… (read more)

Today I was prompted to restart Firefox. When I did, I got a homepage that said "Congratulations on 150 versions of Firefox" or something like that. Then I shut my computer down. When I booted it back up, ALL of my profiles, bookmarks and web history are gone. I can't find anything on my desktop to "restore" my old settings. I'm prompted to "create new" profiles. WTF is going on?!?!

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How to Select a Firefox Perofile

I had a problem where FF 140.0 would not update, and in trying to get FF yo update, I used a re-install tool to which I was pointed in my problem report. This caused FF… (read more)

I had a problem where FF 140.0 would not update, and in trying to get FF yo update, I used a re-install tool to which I was pointed in my problem report. This caused FF to wipe out my configuration, and I lost all my windows and tabs. I have gone to

    \Appdata\Roaming\Mozilla\Firefox\Proifiles\abnfpged.default

cleared all of the data therein, and restored that directory from a backup I made last Monday. But I cannot get FF to use that directory. "about:profiles" shows only two profiles, but the Profiles directory has five profiles:

03/10/2026 09:39 AM <DIR> qf00ka5x.default 03/10/2026 09:39 AM <DIR> v842ceue.default-release 04/11/2026 09:16 PM <DIR> .. 04/11/2026 09:16 PM <DIR> . 04/12/2026 03:08 PM <DIR> abnfpged.default 04/12/2026 06:29 PM <DIR> jdfj91sd.default-release-1775960183850 04/12/2026 06:48 PM <DIR> f1jq4mlq.default

Only the profiles beginning with "j" and "f1" are seen in the "about:profiles" screenshot I have attached. And I have attached a screenshot of my profiles.ini file. Also, in the abnfpged.default directory I restored, where is the list of all of my open windows and tabs? FF used to keep that in a sessionstore.jsonlz4 file, but that file is only written when FF closes. I tried to save a copy when I was having problems, but I stored the copy in the same directory, which FF changed during the re-install process. Here is my profiles,.ini file:


[Install308046B0AF4A39CB] Default=Profiles/jdfj91sd.default-release-1775960183850 Locked=1

[Profile1] Name=default IsRelative=1 Path=Profiles/f1jq4mlq.default

[Profile0] Name=default-release IsRelative=1 Path=Profiles/jdfj91sd.default-release-1775960183850

[Install641D10338ABA448D] Default=Profiles/abnfpged.default Default=1 IsRelative=1 Locked=1

[General]

StartWithLastProfile=1

Version=2

[BackgroundTasksProfiles] MozillaBackgroundTask-308046B0AF4A39CB-defaultagent=lnvi5jn5.MozillaBackgroundTask-308046B0AF4A39CB-defaultagent


I have not worked with the ;profiles.ini file in many years, as my FF configuration has not had problems. Thanks.

Open 5 1 36

I would like access to the free VPN, but I don't see the option to add it in settings or recall getting a pop-up

Hello, My Firefox browser just updated to version 150. I was notified that Mozilla now has a free browser-based VPN. I have followed the instructions listed, but I don't… (read more)

Hello,

My Firefox browser just updated to version 150. I was notified that Mozilla now has a free browser-based VPN. I have followed the instructions listed, but I don't see the VPN option available. Also, I don't recall seeing a pop-up request from Firefox about getting access to this VPN.

Is it possible for me to get access with my account?

Open 4 1

Why am I getting Secure Connection Failed The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

I can't open netflix or https://predatorhunteroutdoors.com . Why am I getting this message? Secure Connection Failed The page you are trying to view cannot be shown … (read more)

I can't open netflix or https://predatorhunteroutdoors.com . Why am I getting this message?


Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Open

I have not been able to retreive my desktop information and my bookmarks. Firefox was changed overnight.

bold textWhen I opened my computer this morning without warning the Firefox had a new default page and all my information was gone. I've tried deleting and redownloading… (read more)

bold textWhen I opened my computer this morning without warning the Firefox had a new default page and all my information was gone. I've tried deleting and redownloading and trying to follow the instructions on how to transfer the information, I could not get anything to work. I know I'm doing something wrong but have no ideas what I am suppose to do. Very disappointed I had some importat information on the desktop and would like to get it back.

Open

Understanding Options for Transferring Firefox to a New Computer

I have recently purchased a new Windows 11 computer, and want to install Firefox there and transfer all my bookmarks, passwords, etc. There are obviously quite a few Supp… (read more)

I have recently purchased a new Windows 11 computer, and want to install Firefox there and transfer all my bookmarks, passwords, etc. There are obviously quite a few Support articles on this topic, and seemingly quite a few methods to use: copy and paste profile folder, sync, the backup/restore function within Settings, etc. I'm a bit reluctant to use sync, as some users report it can be an incomplete transfer. My current profile also may contain some "corruption", so I'm reluctant to copy the entire profile folder to the new computer.

Comments by esteemed and superb contributor cor-el in this Support article: [https://support.mozilla.org/en-US/que.../1454070] therefore may be my best option. He wrote:

Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer.

   bookmarks and history: places.sqlite
   favicons: favicons.sqlite
   bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
   cookies.sqlite for the Cookies
   formhistory.sqlite for saved autocomplete Form Data
   logins.json (encrypted logins) and key4.db (encryption key/primary password) for logins saved in the Password Manager
   cert9.db for certificates stored in the Certificate Manager
   persdict.dat for words added to the spell checker dictionary
   permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
   sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder) 

My questions are: 1. Why is it "best is to avoid restoring a full profile folder"? 2. Is this the complete list of "important files that are safe to restore/transfer"? 2. In my profile folder, there are several files that start with the same file name, but then have different file extensions. For example: cookies.sqlite, cookies.sqlite.bak, cookies.sqlite-shm, cookies.sqlite-wal. Should I restore ALL these files, or just "cookies.sqlite"? 3. Is the correct procedure to copy the selected files from the "old" profile, and then paste them to the "new" profile, which presumably would overwrite files of the same name in the "new" profile? Thanks!

(Apologies for any formatting, bold text, and italicized test oddities. I selected these options for parts of this text, but am not sure I did that correctly. It would be very helpful if a question/message could be previewed prior to sending!)

Open 1

I JUST WANTED TO SAY A HUGE THANK U TO MOZILLA.

'I JUST WANTED TO SAY A HUGE THANK U TO MOZILLA.' IN A WORLD WERE google SENDS ME AROUND IN CIRCLES AND MAKEZ ME WANT TO PULL MY HAIR OUT WITH THE UTTER STUPIDITY THAT EP… (read more)

'I JUST WANTED TO SAY A HUGE THANK U TO MOZILLA.' IN A WORLD WERE google SENDS ME AROUND IN CIRCLES AND MAKEZ ME WANT TO PULL MY HAIR OUT WITH THE UTTER STUPIDITY THAT EPITOMIZEZ THEM,

*MOZILLA IZ A KONSTANT BREATH OF FRESH AIR AND A TALL GLASS OF  KOLD WATER

IN A DEHYDRATED DESERT OF ANGER AND WASTED DAYS ATTEMPTING TO NAVIGATE "android" . MOZILLA HAZ FOR MANY YEARZ NOW BEEN THE STANDARD AND KONTINUEZ TO SET THE CYBER BAR AZ AN EFFORTLESS HAPPY EXPERIENCE TO THE SMART PHONE. KEEP UP THE AMAZING WORK AND HOPEFULLY WE WILL ALL SEE A google FREE WORLD .. MOZILLA FOR CYBERSPACE OWNER ..

Open 2

Firefox popup ask startup

A very anoying popup appear asking if If I want to start Firefox when Windows start. How can I click: Never ask again. Why in the world would anyone ever want this enable… (read more)

A very anoying popup appear asking if If I want to start Firefox when Windows start.

How can I click: Never ask again. Why in the world would anyone ever want this enabled.

Open

maybe make it clear the free VPN only 4 contries in your update page

thanks for making me waste 20 mins trying to figure out to find the VNP setup, and thinking i must be blind or just very stupid, until i realize maybe not my country, and… (read more)

thanks for making me waste 20 mins trying to figure out to find the VNP setup, and thinking i must be blind or just very stupid, until i realize maybe not my country, and google and find it is not.

Solved 1

how can I get VPN

I have tried to activate the VPN but it did not work. Is it possible that not everyone has access to the VPN included for free?

Open 1

No Emails received from Mozilla

Dear Support, When I try to Login or Change Password there is no OTP Emails received from Mozilla contact emails. I tried multiple way but still nothing received. … (read more)

Dear Support,

When I try to Login or Change Password there is no OTP Emails received from Mozilla contact emails.

I tried multiple way but still nothing received.

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