Firefox supportforum

Hi!

I'm confused by the latest upgrade of Firefox (Version 127.0). It gave me the option to create a new profile or Exit when starting it. So eventually I went for creating a new profile and now my old one seems lost. This is not what I wanted.

When using my shortcut on the taskbar, which I've used for years, it suddenly complained I was using an old version of Firefox. This has not happened for me in decades. I've lived with the Firefox installation on this computer for a very long time and it has smoothly upgraded in the background until now. So what is going on now with this upgrade? Is it a major new version of Firefox that doesn't migrate a current profile?

rgds Christian

Hello,

I was editing a fillable PDF document in Firefox, which I had saved repeatedly (saved over existing file) as I was making changes.

After a crash, I selected "recover session" and the document was open but was now empty. Another document I was editing, which was not open in Firefox but was being saved to a separate file, did not experience the loss of data entries.

Would anyone happen to know the reason for this issue and whether there is any way to recover the data?

Thank you.

Good morning from Holland.

I am amazed not being able to open sites like Banggood and a few others. Tried to delete all the controls on the item but it does not change the behavior of Firefox. Please inform.

Hans Minekus The Netherlands

Greetings support team. The problem is a bit complicated and I could't find anything similar to it on the net, so I'll try to explain in details what happened. One day after opening the browser I noticed that it didn't launch(there was no window). After opening it again I saw that all of my previously opened tabs were gone. After that I closed Firefox and went to check the task manager. I found that Firefox was still running after closing it. I couldn't wrap my head around it and killed the programm. Then I opened it again and got the same results: first launch: no Firefox window(nothing on the taskbar either), secound launch: one empty tab. After that I opened a new tab in Firefox through task manager and my screen "swiped right", I got access to Firefox window with all of my previous tabs, but all the other programms I had opened on the taskbar were gone. Somehow Firefox opens outside my screen on a "separate one" every first time I launch the app, and the only way to switch between "screens" is to open a new tab through task manager or launch a program that was previously active to switch back to previous "screen". It is also impossible to switch between opened windows on different "screens" using gestures on the touchpad or "Alt" + "Tab". I use a laptop and never even tried to attach/connect a second monitor. I don't have another monitor attached via bluetooth or any other means in device manager. I have the latest verion of windows 10 installed and updated. I have another PC, where I use the same Firefox with the same addons on the same Mozilla account, which has no such issues. I have tried renaming the file called "xulstore.json" to "xulstore.old" or deleting it entirely, this didn't resolve the issue.

I reinstalled Windows because my Windows got basically completely corrupted, I tried to log in to Firefox after reinstalling and it won't retrieve the bookmarks I had until 15 or 16 June, please help I can't get them back

Using Firefox on an ancient Dell with XP to run one IP security camera, It may have succumbed to a software glitch. The message now on startup, after an initial failed attempt to load operating system is: C0000218 Registry File Failure. Registry cannot load Hive File, log, or Alt (Corrupt, Absent, or Not Writable)

What do you suppose can be done to de-glithch the os loading routine, so I can keep it out of the landfill.

Thank you, Tony H

I have streamed TennisTV in the past no problem but now it stutters and task manager shows CPU 100%. It also shows Firefox running 2 processes which consume CPU and accounts for the 100%. So I closed one of the processes (the one using least memory) and it solved the problem. So how can I stop this second process from starting, it seems to consume CPU without actually doing anything?

Need to know why this problem of Firefox (on Linux) suddenly arose. When attempting to make audio or video calls it responds with, Does not work on Firefox browser. Yet it continues to work with about half my contacts.

Youtube audio is extremely slow, I reckon at 10%, but the video is fine and can be sped up or down. The problem persists even in troubleshooting mode, after cache clearing, hardware acceleration turned off, enabled DRM and widevine, driver updates, in private mode or not, logged in or not, firefox restarts, computer restarts.

But Youtube plays fine in Chrome and Edge.

I dont think I didnt anything drastically different, or updated win10 or firefox, or messed with anything. It was working fine a day ago.

Is there any way to reset something?

Respected Sir/Mam I saved my password on Firefox but when i reset the password of my firefox account all my saved password are gone. How Do i recover all my Pass??

Hi,

I factory restarted my computer and reinstalled Firefox. When I signed into my Firefox account, all my bookmarks showed up but none of my tabs were loaded. I figured out how to load my tabs up from my previous session but all my bookmarks then deleted. I tried to re-sync but none of the tabs showed up. When I try to restore my bookmarks from the manage bookmarks library, it does not appear. I do not have a backup file for my bookmarks.

Hello!

I get this error often when I try to access various websites. This doesn't happen when I use Opera, so I assume the problem is not with the websites.

My OS: Windows 10. My Firefox version: 127.0 (64-bit).

When I try to login to my Social Security account after pulling up the Soc Sec site (ssa.gov), I get this message:

"Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit."

I tried waiting a couple of days and attempting a login again. I also tried turning off my VPN, using a new tab, refreshing the site and restarting my laptop. I do not get this message when I use Safari to login, but I want to use Firefox.

Thanks for your help in fixing this problem.

I had a crash on my SSD (WIn7 Ultimate) - " Operating system missing" error. I saved the data and want to reinstall Win 7 and import previous Bookmarks data to new install of Moziilla Firefox.

I transferred the sqlite file (s88qn337.default) from the previous install (now non working system) to the existing working Firefox directory (C:/Users/My Name/AppData/Roaming/Firefox/Profiles/xxx.default.

I then renamed "default.XXX.old" (the previous install had only one file in the Profile directory - ie s88qn337.default)

When I try to open Mozilla Firefox, with the single file (s88qn337.default) in the Profile directory, I get the error "Can't find user data".

When I then open fresh install of Mozilla Firefox on working SSD (Win 7 Ultimate) and try to Import Bookmarks, the options are only "Import Bookmarks from Explorer" or "Import from html file".

How to resolve this problem, please?

Ive been using firefox for many years. The new update took away the bookmarks toolbar. My preferences are still "Always on". But, I can only access Bookmarks through a drop down menu. Just wanted you to know. Thanks

Hi,

I can't watch live stream on youtube. I see only black screen on loading circkle. Ads working fine but after them i see what i said before. When live is over then i can normally watch it. I can watch twitch normally. There is problem olny on yt. best chris

Sorry, not sure where to put it for the "topic".

Tried this link: https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

I see TWO profiles listed.

As the current one isn't what I want I try the second one "launch in new browser" - as said in the notes.

All that does is throw me back to the "welcome to Firefox" page.

No, it isn't the end of the world, but I had a few open windows/tabs. (By comparison to this machine which has A LOT of windows and tabs open)

They were useful/used/needed stuff.

It is a DIFFERENT MACHINE to this one. I haven't logged in here from the OTHER machine - may in the future if required/asked.

I'll try to leave well enough alone for now, but I do need that machine and this is a huge bump in the usual smooth flow of things.

BTW - just mentioning. MANY sites showed/suggested how to restore previous sessions but they all point to the HISTORY menu and then show RESTORE OLD SESSIONS.

Doesn't exist on either of my machines.

No data shared as this is NOT the machine with the problem.

I am running a dual monitor setup. My primary monitor's resolution is 3440x1440, and my secondary is 3840x2160.

The text on my Firefox toolbars and menus looks very clear on my secondary monitor (3840x2160), it looks as I would expect it to; however, on my primary monitor (3440x1440) it's smaller which makes it pixelated meaning it's much less clear. I've been using Firefox for about an hour and I'm already bugged enough to post here.

Due to the different resolutions I need to keep the layout.css.devPixelsPerPx in about:config to the default -1.0 so the windows scale as per my Windows 11 settings.