Diễn đàn hỗ trợ Firefox

Hi! So I have Windows 10, but don't know if that's what's causing these issues. Certain websites, that is, Instagram, Bluesky, Youtube, Yahoo, Facebook, and Norwegian news site NRK, as far as I've seen, are not loading properly. Insta and NRK are in simple mode, no matter how many times I refresh Yahoo initially says "failed to load", then resolves itself upon refreshing, but it's really annoying to have to refresh for every message and going back to the main inbox Youtube videos are stuck on the spinny wheel of death, and along with Reddit, one other symptom is that the profile pictures won't load. Reddit posts also won't load beyond the first few, and "continue thread" doesn't do anything Facebook won't load at all, still nothing as I refreshed just now. Bluesky, I'm not sure is Firefox's fault, or what, but I get the "Oops network error", at least on one user, it turns out, but not another, nor on Bluesky main page (I swear, it sometimes feels like at least Meta has something against Vivienne Medrano, because I was also having issues with Insta not showing posts in full screen mode before this became an issue, and it was only majority Hellaverse accounts that had these issues. The Bluesky account that won't load is also a Hellaverse account. Either way, that's not here nor there regarding this issue)

What on Earth is going on?! Is it that I have too many tabs? I do have around 1000 tabs, which I guess could be an issue, but it hasn't been until today, two or so hours ago. I was even fine last night! Is 1000 the limit, or something? I do have some ad removers, which btw, some other video watching sites suddenly won't load the videos unless I turn the adblocks off, not cool

Please respond quickly, I am losing my mind here /halfjoking -Helene

Hi Firefox support,

I’m experiencing a persistent issue with Google Fonts (.woff2) on Windows 10. Only on some but not all pages whoch are using Google Font woff2: Fonts display correctly after starting Firefox, but as soon as I reload the pages with for the first time, they appear corrupted and remain broken. Private Browsing mode renders the fonts correctly, and Chrome does not have this problem.

Below is a detailed list of everything I’ve tried with ChatGPT so far to troubleshoot the issue.

(OS: latest Windows 10)

Browser: Firefox (freshly installed, no sync)

Behavior:

Example site: https://www.linguee.de/

Steps already attempted:

Disabled all extensions

Tested in Firefox Safe Mode / Troubleshoot Mode

Created a new Firefox profile

Fresh Firefox installation without signing in

Deleted all relevant caches:

%LOCALAPPDATA%\Mozilla\Firefox\Profiles\<profile>\cache2

%LOCALAPPDATA%\Mozilla\Firefox\Profiles\<profile>\storage

%APPDATA%\Mozilla\Firefox\Profiles\<profile>\startupCache

%LOCALAPPDATA%\Mozilla\

Verified / adjusted Firefox config in about:config:

browser.display.use_document_fonts = 1

gfx.webrender.all = false

WebRender running in WebRender (Software) mode

privacy.resistFingerprinting = false

browser.cache.disk.enable = false

network.http.rcwn.enabled = false

accessibility.force_disabled = 1

Disabled hardware acceleration for testing

Tested DirectWrite / Direct3D settings

Recalibrated ClearType

Ran sfc /scannow to repair system fonts

Temporarily disabled antivirus / web protection

Tested behavior in private mode versus normal mode

Observed that hard reload (Ctrl + F5) does not fix fonts

Noted that only .woff2 (Google Fonts) are affected; system fonts render normally

Summary:

Issue is not caused by extensions, profile, cache, or a fresh install

Private Browsing works → problem is related to persistent normal-mode caching or rendering

Only occurs in normal windows, consistently reproducible after first reload

Problem seems specific to .woff2 font handling and Firefox’s rendering pipeline on Windows 10

Why can't I go to saltlife.com when I've gone to this 333 times and ordered items from them for YEARS? Also, when I'm at Kohls.com, I cannot access a site, when shopping to access part of my shopping experience. Am I going to have to change my browser to be able to shop there? I have used Firefox for years, and up until now, I've never had this problem.

При попытке демонстрировать экране (для совместного просмотра фильмов, например) с использованиием дискорд (веб версии) нет звука стрима. Проблема наблюдается **только** в браузере фаерфокс. В дискорде просто пропадает кнопка "поделиться звуком стрима/поделиться звуком системы" Никак не могу найти в настройках способ предоставления сайту доступа к звуку стрима/системы при демонстрации экрана. Может кто-то сталкивался с этой/схожей проблемой и у вас есть варианты решения?

i been using my bank to pay my bills. but all of sudden i can't . it says my browser is outdated, but it isn't. the rest of the banking site works fine just my bill pay. and it works fine for everything else online.

I have at least one question on the support forum which has never been answered. So I went to Bugzilla, and discovered dozens of YouTube issues under the Open/Unconfirmed status.

I can reproduce my problems. I'm sure others can reproduce their problems. Nothing is done. NOT EVEN admitting there is a problem.

If I can't use YouTube on Firefox (I can't), then why am I using FF? It is one of the biggest sites on all of the internet. But FF apparently doesn't care if it doesn't work.

What. Is. Going. On?

(See the attached image... the big blank space is where the video should display)

I am using Windows 11 on a Dell laptop. I have the latest version of Firefox installed. I have used Firefox as my default browser on this machine and O/S for the last year with no problems. I can use Firefox to get to other websites without issue, using either a 5G cellular connection or a WiFi connection direct from the Dell laptop. I DO NOT use password vaults or any kind of automated password entry, and I do not have any bio-metric access functions activated on the laptop; I enter usernames and passwords manually, as needed. I have accessed my Outlook Hotmail account using Firefox without problem up until about 4 weeks ago. Now, I can enter my username successfully, but when I then enter my password I get a rejection screen response from Microsoft (clicking on it, I then get a "help" screen about what to do after getting a 404 message). After navigating through a maze of screens from Microsoft I will get an opportunity to verify my identity by using my cell phone and entering a 6-digit code (essentially a form of "2 factor" identification) and then I will get access to Outlook on the Firefox browser. I should mention here, that I don't use 2 factor ID on my email or with Outlook, and after entering my password, I would have been connected to my email directly. I do NOT have this issue when I try logging in to Outlook using Chrome or Edge on the same machine. I have: rebooted my machine, reinstalled the latest version of Firefox, cleared cache, used Firefox in Safe Mode, cleared cookies and browser history, turned off tracking protection, cleared URLs from tracking protection exceptions, and tried various combinations of all of the above. I also ran "scannow" and "DISM" functions to make sure Windows is not corrupted. Nothing has fixed the problem, and, Microsoft Support claims that since the other browsers work, the problem must originate with Firefox (surprise, surprise! ...). Any assistance in what steps to take to get Outlook to accept passwords that are sent through Firefox would be greatly appreciated!

streaming sites that load on chrome, opera and brave do not load on firefox since the last update, the throbber is the only thing that loads. Running win 11 pro on a powerspec computer, 32 gig ram, onboard graphics, intel core I9 processor 12th gen I believe, has been checked and not one which had the issues

Hello, I am facing a strange issue while using Firefox browser. When I try to play LetterBoxed NYT, the game sometimes gets stuck on the loading screen or loads very slowly. The same website works fine on other browsers like Chrome and also on Android devices, so I’m not sure if this is a browser compatibility issue or something related to caching, cookies, or browser settings.

I have already tried clearing cache, disabling extensions, and updating Firefox to the latest version, but the issue still appears occasionally. Could this be related to browser security settings, DNS resolution, or performance optimization? Please guide me on what settings I should check or change in Firefox to make this web game run smoothly.

When trying to log into my bank, I get the following message: "Bad Request: Your browser sent a request that this server could not understand". I have tried to clear cookies, to no avail.

In Firefox (up to date yes) when I embed a YT video to the forums I use, it comes up with an YouTube Configuration Error 153.

How do I fis this? YT embedded on Chrome & Brave etc play perfectly, but Mozilla always sends me to YouTube itself.

When I try to stream a tv show, I can click on my cable provider, Verizon Fios, to login for access. The sso.verizon.com site doesn't resolve for me to enter my login credentials. I am able to successfully do this on other browsers such as Chrome and Edge. Why won't firefox resolve for me to login to verizon?

I used to be able to have all sorts of tabs open for an entire month. Now, I can't keep them open even for a day. It seems to be a problem selective to Youtube (other tabs like Yahoo Mail still work), leaving my Alienware 15R4 laptop fans running really loudly for a few days now, since updates ran (not sure if that's related), and leaving me having to shut down and reboot the browser, daily, instead of once or twice a month. Is there anyone working on getting us back the old Youtube, or replacing Youtube with something like what it used to be? I am running adblock plus and uBlock Origin, should probably turn them off to see if they're related to the problem, huh? I'd hate to start having to use a different browser.

Windows 10 Home V 22H2 Alienware 15R4 Firefox 147.0.3

Amazon Account Services Login and Security When trying to confirm changes to your account information

“The site you are trying to reach cannot be found. Cannot connect to the server named specs.openid.net. If the address is correct, try the following:

   Please try again later.
   Please check your network connection.
   If you are connecting behind a firewall, make sure Firefox is allowed to connect to the web.

This message appears and I can't proceed.“

It displays fine in Google Chrome and Microsoft Edge. My main browser is Firefox. Is there something wrong with my Firefox settings? firefox 147.0.3 64Bit

Using Drawings in Microsoft Word (web app) breaks after inserting more than 2-3 text boxes and shapes. The error typically displays as "This page is slowing down Firefox..." Steps to Reproduce: -install Firefox on a Windows 11 machine -sign into Microsoft 365 web -create a new word document -click "insert" in the top list -Click "Drawing" in the menu that appears -Insert multiple shapes and text boxes with text

Hello everyone,

I’m experiencing ongoing problems with Firefox and hope to get some help or clarification here.

Main issue: I’m unable to sign in to my Outlook / Microsoft email account using Firefox. The login page does not load correctly, or the sign-in simply fails (Error 400). When I use another browser (for example Microsoft Edge), the login works without any issues.

System information:

Operating System: Windows 10 IoT Enterprise 2021 (LTSC, supported until 2032)

Firefox version: 147.0.3 (64-Bit)

Additional problems: Besides the Outlook login issue, Firefox has recently become more problematic during normal daily use:

Text selection with the mouse often does not work correctly

Clicking and dragging to highlight text is unreliable or stops working

Pages sometimes feel unresponsive, (ChatGPT)

Overall, the browser feels less stable than older Versions on Windows 10 22H2

These issues seem to be getting more frequent over time and occur on multiple websites, not just Outlook.

I switched my system to Windows 10 IoT Enterprise 2021 (LTSC, supported until 2032) in the hope of improved performance and stability.

What I have already tried:

Clearing cache and cookies

Disabling all add-ons/extensions

Testing in Private Browsing mode

Restarting Firefox

Unfortunately, none of these steps resolved the problems permanently.

My questions:

Is Firefox fully supported on Windows 10 IoT Enterprise 2021 / LTSC for the long term (until 2032)?

Are there known issues with Microsoft / Outlook sign-in specifically in Firefox?

Are there known stability issues (text selection, mouse interaction, page responsiveness) in recent Firefox versions?

What settings or troubleshooting steps are recommended to improve stability?

Thank you very much for your time and support.

Best regards, Marco Klecker