Firefox Community Forum

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

The most recent update has caused an issue with LinkedIn. The problem only occurs with Firefox, not with Chrome or Edge. Do you know what it is? How to fix it? The profile photos are being overwritten with the name of the person and title.