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Hi Mozilla Support,

I made a boo boo, was half asleep trying to shut down and wanted to quickly save a set of browser tabs to come back to later, so "attempted" to create a folder to save within a nested structure in my bookmarks library (using Ctrl+Shift+O editor). I right clicked and intended to hit 'f' for new folder in the structure, hit 'd' instead (delete). This was on an upper level folder structure of thousands (10's of thousands....?) of bookmarks.

Realised my half asleep mistake and doubled down! Hit Ctrl+Z to undo changes.

Well, I guess FF was struggling to process all of the changes, then got confused with the undo, and broke without performing either... F**K. But ok, I will just restore from a backup, I have those setup.

So I went to 'Import/Backup -> Restore, and picked the latest date. Okayed the warning and waited. It failed, gracelessly, by deleting all my bookmarks, then errored. "Unable to process the backup file." Now I can't restore any of the restore files in the list. The latest one looks broken with almost no data, but all of the earlier ones are there, they exist in the folder structure under AppData, say they have 30,000+ bookmarks, and are all around the 20MB size.

None of these restore.

My only hard HTML backup is from early in the year, March, and that is very old in my activity levels.

Also, why are all of the json files failing?

I've since restarted my PC, slept and come back to the problem awake. Still same problems.

I have gone as far as using the 'Refresh' technique in the uninstall options, and despite everything else coming back from scratch, I still cannot restore my json backup files. They all give the same warning, delete any bookmarks I have added and then error with, "Unable to process the backup file."

Is this something that has happened before? I get I screwed something up, but what could be preventing this from restoring? Are all of the json files now poisoned somehow?

Do I have to do a full uninstall and reinstall and try again? And if that fails, what are my options?

I have backups for a reason, this very reason in fact, so that when I error, I don't delete my life...

Would love some guidance on this, if there is a way to check .json integrity, or anything else pertinent I might have missed, I would appreciate a poke in the right direction.

i turned the machine off last night as normal. turned on this morning and you had signed me out... why? i had all the pages open i needed and everything was normal. i eventually after not getting answers else where signed back in after a typing error.. but i cannot restore last nights session what is or was the problem im back in but something doesnt feel right

Many thanks

I was deep in a long paragraph on a website called edensfantasys. When all of a sudden my phone closed all my apps.. i need to recover that review incase almost donenwith please help

just added nordvpn to desktop. it made some adjustments and i was no longer able to close fiorefox. eventually uninstalled firefox and then reinstalled as reset would not work . now I have lost muyy old firefox settings and want to reinstall them to my new log in which appears to be a new firefox account

Hello ! Can you help me please ? I have an older account ( [redacted] @ziggo.nl ) and this account has all my backup information and settings. But this account does not work anymore. So when I try to login in Firefox with [redacted] @ziggo.nl , and you send me a confirmation email, I will not reach this message and I can not confirm my e-mailadres. Now I have made a new account ( [redacted] @gmail.com ) so I can login in Mozilla, but I don't have my backup bookmarks. Is there a way that you can send me this information ? Or you copy the bookmarks to my new account ? After that I can delete the older account. Waiting for your reply, Greetings, Daniel

I have been receiving crash report for several days in a row, finally received Old Firefox Data folder and tried to re-install the app on my Mac. How do I get my tabs back please?

Kindly, Kristina Grigorian, M.A.

Firefox suddenly became an entirely different browser without me doing anything. It wasn't loading any web pages so I restarted it and it was completely different, and not for the better. All my bookmarks are gone. What the hell did you do?

I had a Firefox account disconnected message when I clicked on the three bars in the upper right corner. Once I resigned in I lost all my passwords. I have copied my profile from another machine that still has the disconnect message, but I have not reconnected since it has all the passwords. I have also uninstalled Firefox and re-installed and copied the profile again. I still have no passwords. I cannot re-connect the other system if I cannot get the profile back. What am I missing?

It is Wed., Oct. 28 at 6:15 p.m. Eastern time (New York time). My bookmarks and bookmarks toolbar are gone following the most recent Firefox update. I understand it's because Firefox has launched with a new default profile - I've have tried to launch the alternative profile that Firefox has for me in "about:profiles" and it's not showing my toolbar either. This is REALLY a drag - and figuring this out is a bit beyond my tech capacities, or the available time I have to get things back in place. Can someone please clue me in on the easiest way to get my toolbar and bookmarks back?

Tried for over 2 hours to recover my open tabs with no luck and of course, no support here. Kept sending me more and more articles to read but nothing was helpful. Had to switch browsers today as every email I tried bounced back as undeliverable. When a company sells a product and then they don’t want to help their users when they need support, I don’t do business with them anymore and they tend to get back reviews on Trust Pilot.

Hello everyone, I'm trying to recover the tabs I had open in my old Firefox installation on Windows 10. I had accumulated many tabs that I wanted to keep, and I'd really appreciate some technical advice before giving up on recovering them. Here is my situation: My previous setup - I used Firefox on Windows 10, which was installed on a 500 GB SSD. - I believe I was signed in to my Mozilla account, although I'm not completely certain. - I had many tabs open that I would like to recover. What happened - I moved to a new Windows 11 installation on a separate 2 TB SSD. - I deleted the old Windows 10 `Users` folder on the 500 GB SSD. - Afterward, I ran a full H2testw write/read test on the 500 GB SSD. - I installed Firefox on Windows 11 and initially used it without signing in. What I've tried - I located Firefox session files, including `previous.jsonlz4` and `recovery.baklz4`, but used History Scrounger to determine that they belong to my new Windows 11 Firefox installation. - I have since signed in to my Mozilla account and can see browsing history from before the Windows 11 upgrade. - My current Firefox Sync settings show that synchronisation is enabled and that Open Tabs and History are included. - I also have Linux Mint installed on the 2 TB SSD, but I only started using Firefox on Linux Mint after setting up Windows 11. My questions: 1. Is there any way to retrieve the old Windows 10 session or its open tabs from my Mozilla account or Firefox Sync, even if the original Windows profile has been deleted? 2. Does the presence of old browsing history in my Mozilla account indicate that any additional session data might still be available? 3. Are there any other places where Firefox session data might have been preserved? 4. Given that I ran a full H2testw test on the old SSD, is there anything else worth checking before concluding that local recovery is no longer possible? I understand that browsing history and a saved session are different things. My main goal is to recover the actual collection of tabs that was open in my old Windows 10 installation, rather than simply reconstructing it from browsing history. I'd appreciate any suggestions for further investigation. Thank you!

I was using Mozilla but I couldn't find my search history using same email id [email removed]@gmail.com. Kindly help to recover my search history from 2016.

Hello,

I keep running into an issue where my group of saved tabs disappears.

I will make several groups of tabs. When I right-click and press "save and close group," to shut down my laptop completely. There are many times when I return and try to access the saved group of tabs using the drop-down arrow at the top of the browser; all the saved groups will be gone.

Normally, I find them under "Recent Tab Groups". There have been many times when they are completely gone. Is there another way to find these groups of tabs or are they disappearing completely are a certain amount of time has passed?

Thank you,

My app crashed and I don't have my current password saved so when I reinstalled the app on my laptop I can't get into it or access my bookmarks/saved passwords to accounts.