Firefox Community Forum

I have enabled the option to open the previous windows and tabs. I had one window that I always closed last as it had a lot of groups that are important for my work, so it used to open every time I started Firefox. Sometimes, even if I closed the window by mistake without closing other windows, I was able to get it back by pressing ctrl+shift+n.

But yesterday, I might have closed it by mistake and when I pressed ctrl+shift+n , it didn't come back. I wasn't able to access my window and now it's all gone. I don't see anything in recently closed windows in history.

I need those tabs back as they are very important for my work. they were a lot of tabs. I had many groups but now all are gone. I tried by using the previous.jsonlz4 in the sessionstore-backup by renaming it in the default-release profile as sesstionstore.jsonlz4 but still wasn't able to access my window.

I didn't clear my history as the tabs opened in the window still show up in the history.

Kindly help as soon as possible

Whenever i put javascript code into the url box when making a bookmark, (trying to add a bookmarklet to my bookmark bar.) after i click save, the bookmark just doesnt even show up, its like firefox isnt even making the bookmark. i dont even know whats going on it was doing this before i had any addons

How come FF translates sites in tiny, irrelevant languages like Bulgarian, but not from major languages like Chinese and Arabic?!?

I wish I could dump Edge, but this FF deficit forces me to keep Edge on my computer...

I'm having issues using Firefox with the Facebook site. Groups are slow to load and sometimes the chat and notification windows take forever to load with shimmering panels or a wait cursor displayed. I've cleared the cache and deleted the cookie, but that didn't rectify the issue. I don't have a problem with Edge.

Mozillers,

I depend heavily in my environmental and other work on Firefox and am grateful for its ability to restore previous tabs when my laptop, not infrequently, stops working abruptly.

Now the much-used bookmarks have disappeared. A search site states promisingly:

"To restore Firefox bookmarks, use the built-in backup feature by going to Menu > Bookmarks > Manage Bookmarks > Import & Backup > Restore, then select a dated backup or a manual file (like a JSON backup) to bring back lost bookmarks..."

But my Firefox's Bookmarks drop-down menu has no Manage Bookmarks option. PLEASE, what must I do?

Elsewhere I managed to find this file which apparently contains recent bookmarks:

"C:\Users\User\AppData\Roaming\Mozilla\Firefox\Profiles\unk14jlv.default-release-1647366062305\bookmarkbackups\bookmarks-2025-12-26_95_4IdGtYxezJpwuH1UIiT1bRwe1K6bcGO8rv0mqa9rUWU=.jsonlz4"

But attempting to open it with Applications\firefox.exe (default) accomplishes nothing.

FOOL-proof instructions would be wonderful. Thank you.

I am an application developer for a customer information system and we have dozens of clients using our web based product.

Some users recently updated to firefox version 123 and are reporting issues in two different areas of our product. Both of these areas involve java script. These clients running under prior version of firefox did not have any problem and if they switch to another browser the issue is resolved. But they need to run using firefox. I have the recent version of firefox and an older version and am able to re-produce the behavior. I will also provide a screen shot of the page working and the page not working as well.

The issue is, we have a payment page in our application. The user enters a payment amount and our page then fills in several values for them and as other values are entered eventually an Add Payment button is enabled. What is not happening is when the payment is entered the action is not run and the page treats the field as not existing and eventually displays a required field icon. There is nothing the user can do at that point to get the Add Payment button to get enabled.

The bookmarks on my taskbar are all of a sudden not showing up. I'm unable to drag them there like I used to. Also, the history and menu button on the upper right don't work now. I've restarted with no luck.

West Virginia has a website to download old death certificates, but they wont load. There's nothing but a blank page. I'm not positive that it's a Firefox problem, as a friend of mine who uses IE cant load them either, however, she CAN load them on her Tablet. As a historian, I really need to get these records for my research, so I was wondering if someone could go to the site and see of the records appear for them to be downloaded. This is a direct link to one of the records:

link text

While this is the main page were you enter the name you are looking for: link text

If you discover anything, please let me know. Thanks!

Since latest upgrade (1/16/2026) I cannot log in to Outlook email. This is specific to Firefox 147.0.1 (Chrome and Pop Peeper logins to Outlook work fine). I tried clearing cache, updating, restarting, rebooting, trouble-shooting mode, private window etc. to no avail. I get 400 error from Outlook.

Gmail is not working. I enter the link https://mail.google.com in the address bar and nothing opens (white screen). This has not worked for about 2 months (maybe even more).

The last couple of weeks I have this pop up interrupt my screen quite often several times in a row.

I have searched every article online that is remotely similar to this problem and none of the solutions have  worked. 

Any ideas on what I can do to stop this annoyance?

When I open Firefox. Firefox Will NOT open any websites. If I disable ublock origin then enable again Firefox works but I get all the ADS. What I have to do is: Close firefox and restart Firefox but then I get this message "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." Sometimes I have to restart Firefox as many as 10 times before Firefox works. I got to the point where I stop after the second try and just switch to Brave browser.

Before: Firefox use 99%. Brave Use 1% Now: Firefox use 75%. Brave use 25%

I have been trying to get on the Malwarebytes website, but I keep getting;

Your connection is not secure

The owner of links.malwarebytes.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

links.malwarebytes.com uses an invalid security certificate. The certificate is only valid for the following names: *.fortinet.com, fortinet.com Error code: SSL_ERROR_BAD_CERT_DOMAIN

This happens with all of my web browsers. Is it safe to allow Fortinet ?

When I try to play a video on Firefox desktop, it takes it a long time to load. Once it has loaded, whenever I pause it for more than a few seconds, or if I try to skip around the video (either by clicking around in the loaded section of the progress bar or using +/- seconds buttons), the video begins buffering again before the video resumes. This makes it extremely difficult and frustrating to watch anything that requires me to pause, rewind, or fast forward. I've noticed this issue affect multiple video viewing sites, such as YouTube, Vimeo, and Netflix. My roommate also uses Firefox, but doesn't have this issue, so I know it's not a problem with my internet. I thought it might be a problem with my computer, but I tried to replicate the issue in Chrome and everything worked fine there. The issue has persisted almost a week. I have:

• Rebooted my computer several times
• Deleted my history/cache
• Disabled my extensions
• Turned off Java scripts in firefox (this disabled my ability to load sites like YouTube completely, so I turned it back on)
• Updated my computer
• Updated my graphics drivers
• Refreshed firefox
• Uninstalled and reinstalled firefox (and rebooted my computer)
• Uninstalled and reinstalled firefox AND deleted all the data it stored on my computer (and rebooted my computer)

I am currently using version 123.0.1 of Firefox. My OS is Windows 10 22H2.

Firefox updated to version 131.0 64 bit. Bill payment functions on my banking web site stopped working. I cleared cache and cookies and restarted PC but didn't fix it. I tried using Microsoft Edge and the banking web site worked as always. The bank IT person said it was a Firefox problem. Also, the site says not to block 3rd party cookies, enable cookie tracking and cross-site tracking. In Firefox, I made all changes to allow these things for this site but it still doesn't work. Looks like the latest Firefox update is causing a problem that always worked in the past, while trying to fix something else.

I have tried watching videos through chrome and other browsers by searching something via duck duck go and watching that video on duck duck go, and it works on other browser so it must be specific to firefox.

Whenever I try to watch a video, in the drop down bar firefox select to mute audio for some reason. I then select 'allow audio and video' and refresh the page but the video is still muted for some reason. This also happens when I try to use other video sites. This has only started to happen recently in the past two days (and yes I am updated to the latest version of firefox).

The RAM usage increases, from 1GB to 40GB+ within a matter of minutes of starting Firefox. I have not added any extensions in months. I turned of several with no improvement. I have 6 tabs opened. Firefox has crashed several times the past couple fo months. I have been away on travel for 2 weeks, and today the problem is much worse.

Firefox (37916) 51GB, Extensions (34308) 370MB, GPU (33072) 298MB , and everything else < 100 MB.

I really love Firefox - use across my 4 devices. Only on my desktop am I seeing this. Laptop, iPad, and Android all work fine. Running Win 11

Hi there!

I'm a long time user of Firefox, on and off since roughly 2004.

I just saw the Mozilla blog post about Anthony Enzor-Demeo taking over as Mozilla's CEO this morning and am writing here in an attempt to find a way to reach out to anyone within the Mozilla Foundation regarding the direction the Firefox application has been headed, and try to make myself and similar minds within the Firefox community heard about the changes that Mozilla has made to its policies and direction.

In February 27th of this year, Mozilla changed Firefox's ToS and Privacy Notices to incorporate legally binding policies for the application and strip it of its original privacy-first, open-source nature. This, while not a deterministic factor in how the application operates; illustrates a sudden, outward and hostile stance towards its existing user-base who is most commonly comprised of users dissatisfied with the lack of secure and private browser options available. Personally, I refuse to use Chromium-based web engines wherever possible and Firefox has been my one and only way to break from this "monopoly" of web engines.

Beginning to harvest user data for use by Mozilla and claiming ownership of any user content is immediately a massive breach of trust and contradicts what Mozilla as an organization has stood for since its inception. Going a step further to utilize this data to either be sold to advertisers as an asset, or to be used to train LLM's is exactly what I DON'T want to have happen with my data. I hate that this change happened and it massively reduced my trust in Mozilla and Firefox as a platform.

I never asked for this, Mozilla promised that it would never happen, and now I'm left betrayed by broken promises made with the express intent to turn a profit on my behalf as a user.

In Anthony's blog post, he mentions how AI has reshaped how people search, shop and make decisions in ways that were hard to see or understand. I outwardly disagree with this statement and feel as though AI has "infected" its way through society by brute force, being put in front of every user and shoved in every application. LLM's are not a catchall solution, do not help resolve issues in new and innovative ways, and are massively misused, causing excessive resource usage, gutting consumer markets, and decimating the tech industry by causing excessive amounts of data centers and global tech inventories to be purchased and built with no promise of delivery.

While I may want a fast, modern browser that is honest about what it does- I want that with no obscurity. I want a web engine that is open source, as lightweight and minimal in its design and coding as possible; and with no bureaucracy. I want to know how the engine works, to have the option to review its codebase front to back, to have my data stay as my data on my own local machine without providing it to a third party simply by using an application. Mozilla with its changes since February of this year have removed this as a possibility from their entire application suite.

I don't want AI in my browser- AT ALL. I have disabled it in every capacity that I can (frustratingly too, as these are all enabled by default and FORCE me to provide you my data without express consent.) and with every advancement Mozilla makes towards calling it "the future" and "the focal point", I lose trust. I don't want AI, I want the old privacy policy put back, and I really, well and truly and wholly, DO NOT WANT AI.

I NEVER ASKED FOR THIS, IT'S RUINING OUR LIVES, OUR SOCIETY, OUR PLANET, AND I WANT IT GONE.

Unless Mozilla stops this direction today, I will be seeking out new options, disallowing Firefox usage in any corporate environments within my jurisdiction, and actively informing friends, family and acquaintances of Mozilla and Firefox's fall from grace, and to utilize other user-centric options.

Thank you for your attention, have a great day, and I hope Mozilla can create action that will allow its users to trust it once again.