Diễn đàn hỗ trợ Firefox

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.

Greetings Ya'll, Firefox Bookmarks are no longer being initially placed in "Other Bookmarks, they are now being placed in the "Bookmarks" that is under the "Open Application Menu" Tab.

I've found that the "New Bookmarks" can be "Dragged" as a copy to "Bookmarks", from the "Bookmarks" located in the menu, for they will stay there unless I delete them

I can not move the "Bookmarks" back to "Other Bookmarks"

Would I lose My Bookmarks, If I "Refresh" Firefox, as suggested in the "Troubleshooting Section? If there is a chance of this happening then that would Absolutely Be Catastrophic!!

helloooo

i am experiencing an issue with firefox where backup (Firefox Backup) is not working since version 148.0

problem: - when I try to create a backup, i get the error: “Hmm, there was a problem with the backup. Please try again in a few minutes.”

what I have already tried: - enabled and disabled backup password - changed the backup folder/location - cleared browser cache - tested across multiple updates (issue persists)

- backup is enabled, but I cannot create one - the error occurs every time - restarting the browser and system did not help

When there is a field to fill in my credit card info, the info will appear and let me select the CC I want to use but when I move away from the field the CC info goes away.

Updated to esr 128.14 Now Reddit (Redgifs) Hosting site for gifs crashes Firefox and cripples my PC. I've tried restarting in safe mode, then refreshing Firefox. Nothing is working. Reddit support just has an issue with the Gifs not playing, but nothing as extreme as what iam experiencing. I believe it may be something is preferences or a codec or something that was changed in the recent update. Any advice/ help would be great. Edit: OS is windows 10 latest updates Amd- Ryzen 7/32gig 3.20 ghz PC. So can handle a little bit of heavy browsing.. FF 128.14 esr Ext- Ublock Origin

       Search By Image 
       Flash and Download Video. 

Even with Addons disabled still occurs. Really at a loss here.

Hello, Firefox won't save my download history between sessions, history is set to remember. I tried doing the refresh on the installer and even reinstalling firefox and deleting all mozilla folders in %localappdata% and %appdata% before reinstalling. it just forgets all downloads once I close firefox.

Video Link

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.

okay this just is bad as of today and last Firefox update and with all extensions off . this is what i got when i tried to post and watch a video. it happens on all the videos on Facebook i have tried contacting them as well and that is an almost impossibility it is only in Firefox they work in chrome and edge i even tried reinstalling Firefox ans still get bland black screen I have tried turnoff extension and still this is what i get

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.

FF is offering up possible login names for a particular site I have used previously even though I have removed all related browsing history, form data, and cookies (and cleared the cache). What am I missing? Is it using stored history for unrelated sites to guess at a user name, or is there some other hidden history I need to clear?

In this version of Firefox 152 for windows I'm currently unable to remove search related to google, ebay, perplexity and bing.

Please return possibility to remove those completely!

I don't want my browser to have anything to do with those listed above. I have had it removed in previous versions. Why did you add it to browser again?! Why don't you allow to remove it anymore?!

Please appreciate that alternative text is not always applicable.

I use the Add Image button to tick off things on a list (add image of a tick) - for my own personal use, not suitable for webviewing. Halfway through the task these Alt Text warnings just obliterate my view of the document; my attempts to not have to print it, or not have to use Adobe, are thwarted.

I'm looking at a page of grey blocks that contain a triangle which in turn contains an exclamation mark, and I can no longer see the actual document behind them.

Sorry if I've posted in the wrong place.

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.

How to remove google search from the address bar on the right?????

I want to find my most visited websites in the address bar without any unnecessary actions!!!

A new version of the "List All Tabs" appeared on my toolbar today, shown on the left and hovered over in the attached screenshot (ignore the Malwarebytes extension icon). The old icon for this button was a chevron with approximately the same functionality. I was able to remove the old icon, but I'm unable to find a way to remove this one. Here is what I've tried so far:

• Like the old one, the Customize Toolbar feature is unable to remove it since it is grayed out.
• For a while, I was able to remove the old icon by going to about:config and setting browser.tabs.tabmanager.enabled to false. This solution does not work for the current and some recent versions of the button.
• I attempted to create a userChrome.css file (following all the steps according to this this website) and added the following string: #alltabs-button { display: none !important; }

None of these attempted fixes have removed the button following a browser restart. Is there a way to remove it? I have no need of a button that shows me what tabs I have open when I can simply look at my toolbar.

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.

this issue has arisen suddenly over the last month. so i try to load bandcamp and for a few moments i'm able to go from page to page. after a certain short amount of time has passed between me opening the site and using it, just seconds, upon me clicking a link, pages initially appear to load [the refresh button switches to the X icon] before they quickly halt and keep me stuck on the same page. attempting to open a link in a new tab in this state gives a blank page - not showing as about:blank in the url but the intended destination. sometimes when i try to confirm a change on something i have uploaded to the site or try to log in, bandcamp gives an error reading "There was network error. Please try again."

so i originally thought it had something to do with using a VPN; initially i thought it was alleviated when i turned it off but i was wrong, problem soon reappeared. i've actually been using zen browser for a while, so maybe it was localised to that? i switch back to regular firefox and it was there too. troubleshooting mode didn't yield any difference either, so there's no conflict with extensions... clearing all bandcamp site data hasn't worked either, now because of this issue i just can't log back in lol. i ended up testing on a non-firefox browser, microsoft edge, and found that this issue isn't present there. so i'm kind of stumped on how to figure this out by myself now. keep in mind this is the only website that is affected by this issue

On two different Windows machines, current Firefox (153.0.1), the alt-d shortcut stops working: it does nothing until I restart Firefox. Then it works again for a while. I've tried about:keyboard and it's not reset there. I tried all combinations: Clear, Reset, setting it to alt-d explicitly. None of those worked. But when I set it to alt-a, that worked--but then resetting back to alt-d again didn't work. That shortcut is muscle memory at this point, so it's quite distressing. Not sure what diagnostics might be available to help here, happy to try anything.

Full disclosure: Both machines are Windows 10 but since that's stable, I find it hard to believe that's related.