Diễn đàn hỗ trợ Firefox

Clearly your crappy browser system won't stop crashing my tabs with its stupid updates randomly out of no where while I'm in the middle of working on something. I can't even report bugs in games anymore because I go to pastebin to post a crash log, and firefox decides to say 'RESTART FIREFOX TO CONTINUE USING' for no reason. I am very angry, this happens so often its ridiculous. I have updates set to "check and choose" and yet your browser keeps crashing all tabs all windows telling me to restart to continue using, and only today did I realize it said it was related to an update. This is unacceptable behavior. This browser is becoming unbearable. Crashing/updating in the middle of my work is very bad, and this is getting old. Obviously this time it was an unwarranted update, who knows if my browser has even been crashing at all. Just keeps getting disabled for your forced updates. I need them disabled, NOW. I choose when to update. NOT YOU.

I have a problem. When watching videos on YouTube, especially in 4K, it starts to freeze, and the loading screen stays on indefinitely. The same thing happens when you fast-forward or rewind the video. Switching the video to 1440p or 1080p helps, but over time, even at 1080p, it starts to freeze. but if I switch back to 4K, everything works fine, but only temporarily or until I fast-forward it.

I can provide browser data files. I'll say right away that I've tried a lot of things, and even everything that ChatGPT recommended didn't help. I tried changing the about:config settings related to the video player and codecs.

The only thing that helped was installing a plugin (h264ify by erkserkserks) that disables av1, and in that case the video works fine, BUT only at 1080p, which doesn't suit me, as I would like to watch videos in high quality.

If I disable hardware acceleration so that videos are rendered on the processor, then everything works fine and everything runs smoothly, except that the processor is loaded at 60%. This may be a solution to the problem, but I would like to figure it out and solve it completely, rather than looking for a compromise.

Motherboard: ASRock B850M Pro-A (BIOS date 02/21/2025, DMI BIOS version 3.20) CPU: AMD Ryzen 5 8400F 6-Core Processor RAM: Crucial CP16G60C36U5B (Crucial 2x16 - 32GB) Video card: NVIDIA GeForce MSI RTX 3080 Ventus 3X OC LHR (MS-V389) (Driver version: 32.0.15.7652, Development date: May 14, 2025, DirectX version: 12 (FL 12.1)) Video card driver 576.52, May 19, 2025 The entire system and browser are installed on an M.2 NVMe CT1000P3PSSD8 SSD (Crucial P3 Plus 1TB PCIe 4.0 x4) (there are also other drives) (2 monitors 1440p) Windows 11 Pro If any data is required, I can provide it. All drivers and everything else are installed in the latest version (unless new ones have been released or it has not updated itself). All Visual C++ and Windows components are installed, I don't think there is a problem with them.

The problem only occurs in the Mozilla browser; there are no problems in any other browsers. I also noticed that on some websites where I watch movies, there is a problem with the video. Unlike YouTube, they load normally, but in dynamic scenes, the image breaks up, similar to the image breakup in games when vertical synchronization is turned off. That is, the video is divided into two parts, and one of them lags behind by a fraction of a second. I tried resetting the browser settings, but it didn't help. Everything works fine on my MacBook and in other browsers and devices, so it's not related to the internet.

Please help me figure this out and solve the problem because I've already tried everything, and I don't want to switch to another browser because I've been using Mozilla for over 15 years. Also, if you need any information or a detailed explanation, I can show you or even record a video. Everything worked fine on Windows 10 on the same system, but Windows 11 is not running as smoothly. (To clarify, this is a clean system; I did a complete clean install of Windows 11, although when I upgraded from 10 to 11, everything seemed to work fine).

I would be grateful for any help.

I have not changed any settings related to fonts in firefox (running on windows 10 desktop), but I have this issue where flag emojis are displayed as a letter code on the page itself, but still display correctly in the tab at the top. is there a known fix for this?

I have a 4k monitor, with Windows scaling set to 150% to make text readable. On firefox the text is still very small - I think it is not scaling according to the monitor setting. I also think this issue only started recently?

All other apps show the text at the scaled size on that monitor. Firefox seems to be the odd one out. Screenshot attached with another app to show the difference.

I am on a MacOS 15.5 and the latest Firefox build. Opening this link https://adobe.ly/444sG14 leads to the heavy stutter of the Firefox window.

Issue is just what the subject says - when I restart my computer, Firefox sync logs out and my browser resets to defaults. When I open my browser it's as if I'm setting it up for the first time.

I am signed into Firefox on two computers, but this is only happening on one of them. The setting to 'Delete cookies and site data when Firefox is closed' is not checked.

Any idea what could be causing this? Thanks in advance.

Hello, Today I updated my firefox and lost all data related with my firefox acc. Passwords, bookmark.

How can I recovert it? It was in sync before update it.

"autofill logins & passwords"

Recently firefox updated to v139.0.4 (64bit) after the update I disabled "autofill logins & passwords" but every time I turn on the pc the username/login, on webpages (amazon,facebook. webmail), populates the field.

I never had this issue until the update, previous version "autofill logins & passwords" has always been disabled ie never shows...

I do NOT want the logon info for "autofill logins & passwords" populated...

I am repeatedly (a couple of times a week for the last several weeks) losing bookmarks. It is possible for me to regain them when I follow the instructions given by Firefox, but I am frustrated with having to do it repeatedly. I am including below the instructions I am following so that someone out there might be able to identify the root of the problem. Help More troubleshooting options Profile Folder - Open folder Exit Firefox Rename or delete favicons.sqlite and places.sqlite Delete favicons.sqlite-shm, favicons.sqlite-wal, places.sqlite-shm, places.sqlite-wal Reopen Firefox

I updated to Windows 11 Pro, version 24H2 on May 2, 2025.

My suspicion is that a "helpful" friend made some sort of error. Earlier this spring, he deleted Microsoft Defender Malware Bytes (I think) because it was interfering with bookmarks. Maybe it has something to do with running Windows 11. If all that sounds confusing, it's because of my lack of technical expertise. I will be grateful to anyone who can help me.

Quite often when I enter a url Firefox will start showing connections of the status bar. It appears to be forwarding the url to other sites before showing what I expect.

I don't understand why this happens. Using the Windows 11 browser goes right to url with no waiting.

i can't find the setting to have Firefox open a new tab when a site is selected from bookmarks. It is opening the bookmark site in the tab that the user is on at the time of opening bookmark site, thus overlaying the current site (tab). Thank you.

Hi there, so my old laptop of 10 years, finally crossed the rainbow bridge! Dead in the water! I have a shiny new machine. And now I need all my passwords, etc. How can I make this happen? The old laptop is a goner, no hard drive, no nothing. Any help would be greatly appreciated. I read other threads and most seem to talk about copying info from the old profile/whatever. I am unable to do that. Thanks in advance!!!!

Dear FF/Mozella staff,

  I have been using FF for many years with Windows 10, every time I launch FF it starts up, brings me to my start screen of favorites, and then shows itself still downloading on the top taskbar pane, but everything is already loaded on screen. The cursor will then not change to the hand pointer to follow links on screen. the bookmarks open to blank or unresponsive pages. Closing and reopening FF gives the error message that processes are still running and do I want to open a new window with FF, but that is unresponsive as well. 

back to internet explorer, Thanks for that

Recently the Temporary Cached File cannot be totally cleared, it remains always now at a minimum 2.6mb, why??? Before earlier this year it was 0mb when temp. cache cleared, what is going on?

I downloaded Firefox to update my address bar so that various search engines could be used. This was ok for the evening. But next time I booted up, FF reverted to what I had before. How do I make the address bar searches permanent. The FF version I am currently using is 139.0.4.