Firefox Community Forum

When I was running a game and updated my graphics card driver, Firefox was running in the background. My PC went completely black and became unresponsive, so I had to force‑restart the computer.

After rebooting, Firefox reverted to a brand‑new fresh‑install state. All my browser settings, login status, local profiles, browsing sessions, hundreds of open tabs and my categorized tab groups disappeared, only the welcome startup guide showed up.

I logged into my Mozilla account on my Android Firefox device. Some browsing history was synced back. However, synced history cannot restore the original tab session back‑forward page history, nor my manually sorted tab groups. All browser preferences, theme and language settings are also lost.

I originally had 4 separate local Firefox profiles on this Windows computer, isolated from each other for different work purposes. Only one profile was logged‑in to my Mozilla account and could partially sync data. The other three local profiles are completely gone. Those extra local profiles were NOT signed into any Mozilla account and were never synced to cloud storage.

In my Mozilla account’s connected devices list, there are two entries both belonging to this same computer: “MARSHAKK” and “Firefox by Administrator on MARSHAKK”, which correspond to my Firefox instance before and after the crash.

I cannot understand the community help articles about session recovery, and I’m unable to locate or restore my old local Firefox profiles and lost tab sessions by myself. Please give me assistance.

Issue occurred on September 6:When I was running a game and updated my graphics card driver, Firefox was running in the background. My PC went completely black and became unresponsive, so I had to force‑restart the computer.

After rebooting, Firefox reverted to a brand‑new fresh‑install state. All my browser settings, login status, local profiles, browsing sessions, hundreds of open tabs and my categorized tab groups disappeared, only the welcome startup guide showed up.

I logged into my Mozilla account on my Android Firefox device. Some browsing history was synced back. However, synced history cannot restore the original tab session back‑forward page history, nor my manually sorted tab groups. All browser preferences, theme and language settings are also lost.

I originally had 4 separate local Firefox profiles on this Windows computer, isolated from each other for different work purposes. Only one profile was logged‑in to my Mozilla account and could partially sync data. The other three local profiles are completely gone. Those extra local profiles were NOT signed into any Mozilla account and were never synced to cloud storage.

In my Mozilla account’s connected devices list, there are two entries both belonging to this same computer: “MARSHAKK” and “Firefox by Administrator on MARSHAKK”, which correspond to my Firefox instance before and after the crash.

I cannot understand the community help articles about session recovery, and I’m unable to locate or restore my old local Firefox profiles and lost tab sessions by myself. Please give me assistance.

I tried using the Google AI to help with this and it gave me instructions to resolve the situation using developer tools, but was a dead end. I hit a roadblock trying to find a "uriTemplate" for another webmail service. The only one that had been on the mailto list was Gmail and I had removed it prior to starting this process, so there was no uriTemplate to be found. I tried calling Spectrum for help, but that was useless. Does anyone know another way to go about this?

Why do I have to keep signing up with you? What causes this? I"m happy with your service yet periodically, I keep getting transferred to Windows because Mozilla is not responding when I attempt to log on. Then it is necessary to go through the whole process of signing up again. Please bear in mind I am not computer literate. Thank you.

Every couple of days I am unable to access my email accounts, facebook and most web pages.

The only way I can access them is to refresh Firefox after which all work OK.

Really like firefox but am getting fed up of having to refresh it constantly any advise you could give would be very much appreciated.

I was using my computer with no issues this morning, then updated to ver 143.0.1. Now when I try to open a tab I see the page briefly flash across the screen and then have just a blank screen. It does not happen on all sites. Sometimes it is a tab within the same site that I can visit. No I am not tech savvy.

I'm using Windows 11 Pro Ver 24H2 build 26100.6584

For awhile, Wistia videos are not showing in a Firefox window. I am using the current version 143.01 and they still do not appear. Here is the page - https://www.profitableportraits.com/day1-presentations.This page using Brave and Vivaldi show the video window and play just fine. I cannot see anything related to the video on the page. All I see is the presenter photo and title flush right.

I have deleted the cash, used private mode and checked connection speed. Nothing has worked. I hope someone has a workaround or fix for this problem. Thank you.

Hi It isn't really a question, but it get to know and learn how to use Firefox efficiently before I converted from Safari to Firefox. I knew much more in Safari than in Firefox. Once I know more about Firefox, Firefox will be a default browser in my desktop,mac. Thanks Ted

After the most recent update on the 17/09 my search bar is permanently stuck blue (screenshot attached). Any idea how to revert this back to the grey it was before.

Out of a sudden all of my bookmarks were lost. I tried importing bookmarks i had previously saved in an HTML. Did NOT work. I tried "revert to older date bookmarks." Did NOT work. I tried "import from another browser."Did NOT work. Funny thing is that with the same HTML file i extracted from mozilla when i made a copy a couple of weeks before, i was able to upload all bookmarks to Opera but not to Mozilla!!!! The image below for the non Greeks reads "Failure to process copy document".