Firefox Community Forum

Hi!

We have a intranet site that works in Edge and Chrome without issues with the site added to "internet options". But for some reason we are getting 401 Unauthorized when trying to access it from Firefox. I have tried adding the urls to: network.automatic-ntlm-auth.trusted-uris network.automatic-ntlm-auth.allow-proxies: true network.automatic-ntlm-auth.allow-non-fqdn: true network.auth.force-generic-ntlm: false network.auth.force-generic-ntlm-v1: false

Ingocnito mode , same error. I have tried disabling all plugins. Disabled DNS over HTTPS.

HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/10.0 WWW-Authenticate: Negotiate X-Powered-By: ASP.NET Date: Mon, 25 May 2026 08:15:41 GMT Content-Length: 0

Regards Rasmus

Hello all

 Firstly I have been using Firefox for about 2 decades and it has always worked perfectly - you can take a bow.
Now for my problem
I have been using Firefox for internet banking for many years without any problems - the usual login, password ans secret questions. Just after Xmas my bank updated it's website and suddenly nothing works. I was told that it now only works on Chrome and NOTHING else - not Firefox, Edge or anything else. I am able to log-in but can't see my account balances or perform any other functions - it just jams up to the point that I even have trouble closing Firefox.
I use Firefox exclusively because I don't trust Chrome or Google - they are just a massive data collection/sharing operation. I have Chrome Mask installed but it just doesn't make any difference.

 Is there anything that I can do or add-on to over-ride this problem?

I am running Mint Linux 22.2 with Firefox 151.0.1

A client of ours has recently raised an issue with with us stating where right-click, Paste does not work when adding text to a new LinkedIn post

After investigating, we have been able to reproduce the same behavior on our devices.

However, from our testing, we can right click to past on comments, messages and searches just fine

Troubleshooting already attempted:

Cleared Firefox cache Performed Firefox refresh Tested across multiple devices

We have confirmed this occurs on:

Clients device My work desktop My work laptop My personal desktop My Personal Macbook

This issue appears to have started after updating to Firefox version 151.0.0. I know this as i have tested this on my work laptop, appeared to work fine then stopped working after manually updating from 150.0.3 to 151.0.0.

Please let us know if there are any known issues, additional troubleshooting steps, or if further diagnostic information would help I have attached screenshots of the issue.

I have also tested this in the Google Chrome web browser and appears to be working correctly as also seen in the screenshots.

Since last update...the reaction emojis on Facebook are blacked out. The entire bar of emojis are not visible. It is all black. Yet the words are visible when hovered over. There seems to be nothing wrong with the FB site and it has been suggested it could be the browser. So if you have any reports of glitches like this ...would be nice if you could fix. Screenshot Impossible to take. Thanks

Hi everyone,

I'm having a frustrating layout issue specifically when using Firefox (both on desktop and mobile). When I try to load a menu page I frequently visit, like this online [sheetz menu](https://sheetzmenuguide.com/), the fonts are overlapping, and the pricing tables are completely misaligned.

It makes the text almost unreadable, and some buttons are clipped off the edge of the screen. However, when I open the exact same link in Google Chrome or Safari, the site renders perfectly and everything is aligned correctly.

I have already tried clearing my browser cache and cookies, and I even disabled my extensions to see if an ad-blocker was causing it, but the issue persists. Is there a known rendering bug in the current Firefox build causing CSS grid or flexbox elements to break on certain sites?

Any suggestions on how to fix this on my end would be greatly appreciated!

I use WhatsApp web with Firefox 151.0.3 on a Macbook Air. In WhatsApp web, you should be able to emoji over a message sent by someone else. One clicks on the smile icon at the side of the message, the emoji pallet appear above and select one of a handful of emojis. Since a recent update, the pallet no longer opens. It's just white space, the cursor does not change allowing you to pick one of the emojis. See screenshot. Is there a fix for this please?

I recently switched to Mozilla Firefox and noticed that one of my business websites won't open in the browser. I'm not sure whether the issue is with my website or Firefox itself. Has anyone experienced something similar?

Greetings,

For the past three days (A/O 06/01/2026) I, (and others who have posted on various sites) cannot access a functioning log-in page for Google or Gmail via Firefox. If I (and others) use an alternate browser e.g., Edge, the log-in page functions and displays as it should. However, when using Firefox, the page displays as the image I've included - no functional 'log-in' icon and no Username or Password box. Using 'Private Viewing' makes no difference. As other browsers work, I will assume this is a Firefox issue. As there is no way to submit trouble tickets, I'll leave this here in hopes that someone from Firefox will pursue the issue.

Thank you in advance for any information or resolution.

Hello everyone,

I am facing an issue with my website https://ppscjobz.pk.

The website opens normally in Google Chrome, Microsoft Edge, and on mobile devices, but some users have reported that it either loads very slowly or does not open correctly in Mozilla Firefox.

I have already checked:

SSL certificate Website hosting DNS settings Cache and cookies Mobile responsiveness

However, the issue still seems to occur for some Firefox users.

Website URL: https://ppscjobz.pk

Has anyone experienced a similar issue with Firefox? Are there any Firefox-specific compatibility settings, security policies, or browser configurations that could cause a website to load differently?

I would appreciate any suggestions or troubleshooting tips.

Thank you!

When I click the "story continues" button in a Yahoo news article in Firefox, nothing happens. In Chrome, it works fine. An example page with a button of this type is here .

Nothing jumps to mind about a setting that would be responsible for this, but I'll put it out there. Any thoughts? Or is this just a Firefox bug?

ok now every time Firefox updates im on a a page and yes i do have ad ons or extensions which Firefox offers and if we are not supposed to use the why offer them Ill be on a page mostly A Facebook page and it keeps asking me to stay on or leave page on Facebook page stay on page or leave page I try to hit stay on page and i can not i have have to ht leave page what is going on and why i hate this thing why do i have to keep refreshing the page why is this happening do i need to remove the add on you support this is just not right

I go through the process up to 2FA then I get this message " Looks like there’s a problem with this site The server at outlook.live.com sent back an error: 401 Unauthorized".

I recently tried MS Edge even though I always use Firefox. I went through the login process including 2FA and got right in to my email. Can you help?

I prefer to use Firefox and have used it for years.

Thanks

With Mozilla Firefox for Linux Mint 150.0 after logging into Chase Bank , when trying to pay off my credit card, I get a message: "It looks like this part of our site is not working right now". However the site works perfectly with Chrome, thus the problem must be with Firefox. I have cleared the Chase cookies and still getting the same result.

Hello, I can't log in to Facebook, only through Firefox, and that's the problem. Edge and Chrome work fine. I've already deleted cookies and temporary files, and still nothing. This problem has been occurring for a while.

Hello everyone,

We recently received feedback from a few users who reported issues when submitting forms through Firefox, while the same forms appear to work normally in Chrome and Edge.

The website belongs to Avenue Billing Services, and the issue seems inconsistent. Some users can submit forms without any problems, while others experience submission failures or no response after clicking the submit button.

So far, we have:

• Tested the form in Chrome and Edge successfully

• Verified basic form validation settings

• Checked for server-side errors

• Cleared browser cache and cookies

Before diving deeper into debugging, I wanted to ask the community:

• What are the most common causes of form submission issues that appear only in Firefox?

• Are there any Firefox-specific settings, privacy features, or extensions that could interfere with form functionality?

• What tools or methods do you recommend for troubleshooting browser-specific issues?

Any suggestions or troubleshooting tips would be greatly appreciated.

Thank you.

I am running Windows 11 Pro and Firefox 147. Beginning the second week of Feb, Chase bank will not allow me to log into their system. They say I have to have Windows 10 or higher and Firefox 128. I am running 147. What else can I do?

I watch TV on my computer. All channels but ITV have sound, ITV does not, it did have until a week ago. ITV has sound on onother browser, so why no sound on Mozilla

I could not get into my Fidelity Investments account today. (I signed up last week using same computer w/Firefox) I got to the login page but Fidelity gave me a "can't complete at this time, try again" notice. So I called them up and they suggested I use chrome. I don't want to use chrome. I tried reentering with the VPN off and on. No go.