Firefox Community Forum

I'm trying to set up Firefox on a new Windows 11 laptop and having issues.

First, I installed a couple of Add-ons and set them up, I use one to have a Home Page, and another for zoom percentage. And I went into each one and set them up as I want them. But when I closed FF and reopened it, they were gone, as if I didn't install them at all. And all the changes I made to the top part of the browser - icons and overall look - reverted back to what FF is "out of the box."

Also, on my old laptop, I went into about:config and changed the ui.textScaleFactor because the default FF top part is too wide for me. But when I went into it on the new laptop, and changed the number, nothing happened. On the old one, when you enter a different number and hit enter, the change is made immediately.

Also, I did make FF my default browser on the new laptop, at least I think I did. I clicked the link to do that, and it brought me to a window with a bunch of confusing extensions. I changed them all to Firefox, including E-Mail, and I don't even want FF being the default for E-mail. And I did click the check on top and clicked "Make FF the default browser." But when I open FF, I keep getting asked if I want to make FF my default browser and to pin it to the task bar. But it already is!

I should point out, that it's possible I downloaded FF twice, and may have installed it twice. But when I go to Install/uninstall files, just one is listed. And I only have one FF icon on my desktop.

So what is going on?

Yesterday, I noticed after I closed and re-opened Firefox, my browsing session was completely gone - all my tabs and windows, my entire browsing history, website sign-in status, all completely gone. I've been troubleshooting since then.

I've noticed that the 'sessionstore-backups' folder in my profile folder is missing. When I open Firefox, this folder is created and Firefox writes some data to it, but Firefox seems to delete the folder as soon as I quit Firefox. Firefox should not be doing this. My Firefox is configured to open previous windows and tabs, and is NOT configured to wipe any browsing data of any kind when it closes.

As a sanity check, I spun up a Windows Sandbox (briefly, it's a clean, isolated Windows environment) and installed Firefox there. I also enabled the option 'Open previous windows and tabs'. Firefox behaves normally - it re-opens the tabs/windows I had open when I quit Firefox. Great, that's what I expect. The trouble starts as soon as I sign in to sync. After signing in to sync, and letting the initial sync process complete, I open a couple of windows and tabs, then quit Firefox. Firefox begins nuking my browsing session again - the 'sessionstore-backups' folder is erased, and next time I start Firefox, all my windows and tabs are missing, and my browsing history is missing.

So, at this point, I'm assuming something in my synced data has become corrupt. I haven't installed any new extensions lately. I haven't changed any of Firefox's settings that would cause this to happen. The only thing I have done differently lately was enable Firefox Sync in LibreWolf and sign in to sync there. It seems like this session-nuking trouble started after I signed in to sync in LibreWolf. I assumed, since LibreWolf is a fork of Firefox, and because there were no warnings or indications the feature was incomplete/unstable/experimental/etc., that it would just work, that it wouldn't cause any issues. But it seems like it has caused issues. I checked LibreWolf's issues tracker for anything related to 'sync', but I didn't see anything noteworthy.

I've been using Firefox and Sync for numerous years without issue. This session-nuking thing started yesterday.

I use Firefox in a few places, and based on what I saw happen in my Windows Sandbox, this session-nuking issue is going to happen in every Firefox I'm signed in to as soon as it has a chance to sync. Obviously, I do not want this to happen.

What can I do to determine what the issue is? What can I do to check if something in my synced data has become corrupted? What can I do to reverse it? I'm not opposed to completely wiping/resetting my synced data, but I'd rather not if I don't have to. The only thing I would lose sleep over is my bookmarks, but I know I can export them. Are there any debug logs I can enable/look at? Anything I should look for in Event Viewer?

Thanks.

Hello. How can I post HTML code snippets in support.mozilla.org questions ? All HTML code is rendered and none of the usual markdown (``` etc.) works.

When I'm using Chrome Browser every Google related products working smoothly but when I'm using Firefox except (Google) every other websites working smoothly. I even clear cache a lot times & troubleshoot the Firefox too but still facing such problem. It just display No Internet Connection message just for Google products.

As noted by others about recently-prior versions of Firefox, version 129 ALSO fails to play videos (on Amazon Prime) at HD even though other browsers, Chrome and Edge as examples, work perfectly well. This problem MAY have started with a fairly recent version of Firefox (like 127 or 128). See the post right here by another user, earlier Firefox version, with the EXACT same problem:

https://support.mozilla.org/en-US/que.../1455729

Hello. I am not familiar with this end to end encryption that Facebook now does for Messenger but now when I try to use Video Calling/Chat it tells me it is not supported by my browser, Firefox. I have never had any problems with it before. Is there a fix? Thanks

I use Private Browsing to read a newspaper, not behind a paywall, for the main reason it hides all the adds. But just this last few weeks I keep getting the message "Please allow ads on out site" more and more not a great problem I just refresh the page and like magic gone. I like to open each story in a new tab so when I have read the paper I can have a whole lot of tabs all with just one story so after I read the story I close the tab and still have the paper opened where I left off for quicker navigation in its original tab. I do not have an Ad Blocked running in Private Browsing mode but as you can see the site thinks I am. Is there anything that can prevent this from happening? see attached.

Many thanks.

Pour exemple, lorsque Mozilla installe une mise à jour automatique, nos différents comptes, sur Gmail ou le site "Le Bon Coin", se bloquent et m'alertent d'un problème de sécurité. Pour certains comptes cela devient catastrophiques, car nous avons dans la famille, 2 téléphones qui ne captent pas dans la maison et nous sommes obligés de sortir de notre domicile pour obtenir le code (c'est chouette en hiver lorsqu'il fait froid et qu'il pleut; désolé d'habiter à la campagne!!). Ces problèmes n'existaient pas deux ou trois ans en arrière. Depuis je n'ai trouvé aucune solution! Je souhaitais surtout être sûr que ces problèmes émanaient du petit Renard; 15 ans que j'utilise Mozilla. Ces problèmes récurrents sont problématiques pour toute la famille, puisque mes parents rencontrent exactement les mêmes problèmes. Merci de nous venir en aide. Cordialement.

Dear all I need an extension that can search for a journal title on scopus sources webpage search engine

https://www.scopus.com/sources.uri

this would be very useful i hope that someone could develop such an extension

I am trying to use the tree style tree expansion for Firefox. When I install the tab bar appears at left side as it should, BUT the tab bar appears at the top too. I understand it has to do with the userChrome.css: Questions: 1. The css file is supposed to be created in this folder: C:\Users\jssch\AppData\Roaming\Mozilla\Firefox\Profiles\ 6p6hqx7v.App1d96b2329ff34563bd901f480a66632f\storage\permanent\chrome I that the correct location customized for my pc. 2. Could you supply the correct code for the css file. I am assuming I can use Notepad++ to create the file.

Thank you for your assistance. My email is jsschwab2002@gmail.com

Jonathan Schwab

I tried a 2022 sourced help answer result content but it was broken, and that seemed to be the most recent gainful help response connected to my issue, another variant from elsewhere did not work at all, it was probably older still, so I need working code for the most recent version of Firefox Browser, or however recent enough to not so conflict. Much Appreciated.

Hi ive noticed that randomly since the update when using firefox ill go to type something into the address bar hit enter and normally it would search with google however it registers me pressing search but nothing happens.

Im trapped as i cant search or choose any links and have to restart the browser unsure why this is happening its my first issue with firefox and the sole reason me making a account to post.

any help would be greatly appreciated

I started this thread because I believe it may be related to these problems/failures I'm having with exporting /importing Bookmarks, uploading images (on this site and elsewhere), which has also on occasion led to crashing my pc. Images from my previous thread auto-uploaded to this thread. I felt it might be better to separate the conversations until we get motre info.

Thru trial and error, it seems all these symptoms I will describe seem to be linked to my sessionstore.jsonlz4 file.

About six months ago I was having major problems with Firefox, navigation issues, broken toolbar buttons, blank toolbar button spots. I first tried to revert to a good working backup profile, which was fine until I did the file transfers from the problem profile to the backup, after which all the symptoms resurfaced in the backup profile. . I do what I always do by transferring certain files, but only those that make the transition without creating problems/conflicts; sessionstore.jsonlz4; places, cookies, etc.

I eventually chose to build a fresh profile, but the same problems occurred after the file transfer. Thru trial and error, I discovered that sessionstore.jsonlz4 was the root of the problems. I eventually went back and used the sessionstore.jsonlz4 from the backup file, but it was a real ordeal getting my session back up to date.

A couple weeks ago I started having problem here uploading images. I would select the file, but nothing would happen, and I was getting all these strange side effects.

But a few days later, Once again, I swapped out the profiles, these sorts of things started happening when I tired to export/import bookmarks

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If I move the cursor over the top of the screen, a bit more appears

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I'm writing in the backup profile now, because trying to upload from here or from Postimage, generates only these,

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or various distortions, i.e., but no ability to go any further in the process

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I didn't have any problem transferring the history, cookies, or bookmarks to this backup profile, but how do I go about fixing this without sacrificing the session. Is there a way to import only the session tabs without bringing in the corrupting elements?

BTW, still no "Preview Post" link on this page unless I submit this message first.