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Background: On August 6th morning EST after the August 5 2026 update, attempting to use firefox lead to the window with the "end process" button so I had to close the browser multiple times and then the next time I opened firefox, the bookmarks and history were wiped. I was able to restore using a backup saved on the computer and continue as normal (aside from losing some Cookie Clicker progress, reinstalling Tampermonkey userscripts, and redoing browser extension settings) but now there's an issue with trying to backup firefox data.

Issue: Trying to back up my firefox data leads to a "There was a problem backing up. Try again in a few minutes."

When going to about:config and typing browser.backup.backup-debug-info, I get {"lastBackupAttempt":1786243812,"errorCode":9,"lastRunStep":13}

When looking at Broswer Console, there is an entry saying BackupService: Could not create C:\Users\USERNAME\Documents\Restore Firefox\desktop.ini: NotAllowedError: Could not write to `C:\Users\USERNAME\Documents\Restore Firefox\desktop.ini': failed to open file for writing (NS_ERROR_FILE_ACCESS_DENIED) BackupService.sys.mjs:4116:23 but I don't know how to address that.

I want to move my whole folder and to backup and move it to a new PC. But it says when moving a file called activity-stream.discovery_stream I need a permission from myself.

I'm using Firefox 153.0 on a Windows 11 desktop. I'm trying to use the feature that backs up my profile (bookmarks, history, and other data). When I turn Backup on, I'm asked where to store the backup, and I accept the default of putting it on my OneDrive. When a backup begins, an empty folder named "Restore Firefox" appears in my OneDrive, as expected. Firefox shows a message like "backup in progress." After a minute or so, the "Restore Firefox" folder disappears. After another minute or so (not immediately), Firefox tells me the backup failed and that I should try again later.

I assume the backup failed because the folder it was trying to use isn't there, but why did it get deleted?

There is ample space on my OneDrive and on my local system (100s of GB). I am using the ESET security software package, but it did not raise any warnings or errors.

I pressed the backup button to backup my firefox stuff before switching to linux, and now that im on linux the file i was given a docx file, is completely unusable to restore anything, meaning that about a dozen of my accounts are completely lost, I did not do anything to the "backup" file besides put it into my google drive.

Any progress on this? Import bookmarks is already in Firefox android Nightly — export bookmarks should be just as easy, especially for privacy-first users who can't use Sync.

Has anything changed in the ability to export bookmarks either html or csv since the last time question was asked 2 yrs ago, as far as I found? This is ff beta - android - moto power.... I cannot wrap my head around the gymnastics of sync and back up and desktop and yadda yadda that I read about.

I was about to dl 151, move on from this Beta when having to export bookmarks and passwords became a necessity. Anybody have good news to tell me that the technology of bookmarks has improved at least at the same rate of browser development over past 2 years? thank you good luck Happy Memorial Day and to our vets: thank you for your service.

I fear I must reset or reinstall Firefox. Before I do that, I want to save the URLs of the open windows. Or save a larger set of URLs, such as shown in the Library window at History>Last 7 Days.

How can I save this data?