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The regular version of the browser is open with a bunch of pinned tabs and a private version. And!!! If you close the REGULAR version , but DO NOT close the PRIVATE one before that, then when you try to reopen the REGULAR one, ALL OPEN WINDOWS AND TABS will BE DELETED!!! WHY?!?!

And these tabs are not saved in history, because they WERE NOT active in this session!

Where do developers' hands grow from?! Well, this glitch was a couple of years ago! But now?! A month of work preparation went to hell because of Firefox failure... How do I restore tabs that were just blown away by the browser?

So before few days firefox decided to automaticly update. after thet no pasword was saved in system. undery system data 2 files: logins.json-1.corrupt/json-2.corrupt without any data in files (but size is 130KB). i need these logins ASAP.

Running Windows 10 but with extra year of security updates. Several web sites were running very slow or not loading at all. So I tried doing system restore - only went back 3 days but afterward said it had some problems, and link to Firefox did not work. So I did system recovery back to time from which I had just done restore. But I had no link to Firefox so had to download it new. But now I have none of my previous tabs, links, saved passwords,,etc. I'm hoping my previous Firefox is still on my PC and there is a way I can run it.

Hi,

i can see all my previous tabs in history but can't reopen window?

I didn't close those tabs, one time i opened mozilla and they were all closed.

Help me, thank you

Running v150.0.3 on a Windows 10 PC. I have (HAD) 5 windows open with about a dozen tabs in each one. Just realized that one of the windows is gone! Every time I startup Firefox, I always allow it to automatically update the version. I have a bad feeling this missing window issue happened during the most recent update (last week?).

Has anyone ever experienced this issue or have any ideas how this could have happened? Any chance of recovering that window? I have weekly backups of the SSD containing all my Mozilla files & folders (Firefox and Thunderbird).

Thanks

I got logged out of my Firefox account and upon logging in a bunch of dummy "sync" data replaced all of my bookmarks, settings, ect. Is there any way to undo this?

I have used Firefox as my browser for many years. I have a Dell laptop with Windows 10,PRO installed. I have installed some new software and now need to "reset" my computer in order to use the new software. My question concerns how, if there is a way, to save TABS and other items BEFORE doing the "reset". I have found several "suggestions" on how to do this, but here is one I would like your response. I found this on Chrome;

If you use Chrome browser, you can also go to Chrome's settings > On startup, and choose the "continue where you left off" option. This way when you relaunch the browser, it will carry on.

My question: Does Firefox have similar solution? I did a Firefox search and was unable to find any similar comments, although it is possible I was not searching in the right place. That's why I am asking this question. Please respond if Firefox has an answer or someone has posted an answer.

Thanks, krazykat1

Seit dem 25.12.2025 habe ich meine Lesezeichen und Passwörter, wahrscheinlich nach einem Update oder einer unbeabsichtigten Fehleingabe nicht mehr zur Verfügung. ich möchte meine Firefox-Version wieder auf den Stand vom 24.12.2025 zurücksetzen. Was kann ich tun oder kann man auch telefonisch Kontakt aufnehmen in deutscher Sprache?

I recently upgraded Firefox to 145.0.1 but all my bookmarks are missing. I have a backup file. I tried to restore the bookmarks by opening the Library & selecting Restore (under Import & Backup), then clicking "Choose file". However, nothing happened; no further pop-up window. Please advise.