Firefox Community Forum

As of 7/10/2025, Xfinity Streaming does not open through Firefox. I much prefer Firefox to any other browser so I am a little mystified as to why all of a sudden Xfinity Streaming does not open. I receive my Comcast email through FireFox but when it comes to streaming content, the Xfinity logo just sits there and does not open.

Recently I have had several experiences with captcha when paying for something with a credit card. I check the box saying I'm not a robot, get a green arrow, but then the purchase does not go through. Error message says I failed to satisfy the captcha, even though I was never shown the grid of images. Just now I tried the same operation with the same company invoice using Chrome, and it went through successfully by just checking the box I'm not a robot. This is very inconvenient.

Hello,

I'm facing an issue where my microphone does not work in Google Meet when using Firefox, even though I’ve granted all necessary permissions. This problem is specific to Firefox, as the microphone works perfectly fine in Google Chrome.

I prefer using Firefox because of its convenient screenshot features, but this microphone issue has caused major inconvenience during important meetings.

Kindly help me resolve this issue.

Thank you.

I am trying to sign-in to a site we use and when you hot sign-in the page goes blank white??

The site works on Microsoft Edge so I know its noit the site.

Please advise.

I have used Firefox for many years and been most satisfied. However, for the last several days when I click to load one of my bookmarked You Tube pages, I get a blank screen except for a shaded 3-line menu and three circles, none of which are responsive. If I click to the home You Tube page I get a shaded outline of the videos but no images and the shaded spots do not respond.

I have cleared cookies and site data and temporary files several times, which will allow me access to ONE You Tube channel, but if I click to another, the same blank screen appears and I cannot return to my accessed channel, it also has blanked out.

Quite puzzled about this, every other site I frequent works perfectly well on Firefox, but You Tube does not. However, You Tube works PERFECTLY WELL on Microsoft Edge and, I suspect, other browsers, so I do not think it is a problem on their end.

Please advise what the next step(s) should be.

In trying to access (log in)Social Security Administration, I received "Bad Request""your browser sent a request that this server could not understand. Size of a request header exceeds server limit" I was able to log in with Chrome. Can this be corrected by mozzilla?

Ever since I updated last week, one website that I use will not work. Whenever I try to log in to the M&T Online Banking website, it blocks me and says "M&T Online Banking Is Temporarily Unavailable." The app works on my phone and I can log in through Chrome, it's only on Firefox that I'm getting this problem. I called M&T Bank and they confirmed that it's a problem with Firefox. Something is blocking me but I don't know what it is. I am not using a VPN or adblocker.

Hi! I'm experiencing an issue where videos on YouTube stutter or play choppily when using Firefox. This happens even when the internet connection is strong and works fine in other browsers like Chrome.

Here’s what I’ve noticed:

The issue occurs on both 720p and 1080p videos.

It’s more noticeable when switching to full-screen mode.

I’ve tried disabling hardware acceleration, but it didn’t help.

Firefox is up to date (v126.0).

I’m using Windows 11 and have an NVIDIA GPU with the latest drivers.

I’d appreciate any suggestions or fixes. Thanks in advance for your help!

I had switched to Firefox from Chrome because they banned AD BLOCKERS. But now I have to go back because FACEBOOK VIDEO CHAT won't work ( according to Facebook) because they introduced end-to-end encryption. Can you give me a fix?

Hi!

Yesterday, April 5, 2025, my Firefox started displaying this message for every search typed in the browser:

"Our systems have detected unusual traffic on your computer network. This page verifies that it is really you, and not a robot, sending the requests. Why did this happen?"

I tried a few solutions: I cleared the cache, restored Firefox, reinstalled Firefox, restarted the internet modem, reset the computer's DNS using the ipconfig/flushdns command, scanned for malware with Windows Defender, and scanned for viruses and malware with Kaspersky, but the problem persists, both in the normal tab and in the private tab.

I contacted my internet provider, and they said there is no problem on their side.

In Firefox, I always use the default search engine "Google".

When I change the search engine to "Bing", the problem does not occur.

The problem does not occur in the Google Chrome browser, only in Firefox.

I am using Firefox 115.22.0esr (64-bit), Windows 7 operating system and internet connection via network cable. I only have one computer connected and I don't use VPN.

Please, can you help me?

Thank you!

channel 4 repeatedly gives me this message when i enter my e mail address. there is nothing wrong with the address. Sorry, something went wrong. Please try again or use a different browser. after dozens of attempts it has let me in for the last few days. Today it does not

I can no longer open my gmail in firefox. I need to open chrome to load my gmail and I never use chrome. So why can't I load gmail into my firefox account. Everything else is loaded except my gmail.

I have loaded Messenger onto my new computer as well as Firefox. When I go to Messenger the Voice and Video icons at the top right are greyed and when hovering over the icons, I get a message that video calling etc is not supported. i had no trouble on my other computer but am not sure how to activate the video and voice options. Can you please help me solve this issue. Thank you

https://www.pge.com/ https://my.dmv.ca.gov/

Websites such as the Sites above are not working in Firefox or other Open Source Browsers. I am being forced to use Chromium in this case to complete payments and add items to the DMV Cart and complete a payment for example. I do not want to have to do this. I do not want to be forced to use a Closed Source Browser such as Microsoft Edge or Google Chrome or Apple Safari. Or, Even the Open Source version of Google Chrome Chromium. Companies like PGE are deciding to drop support for Firefox as the State not enough users use Firefox. They are forcing the market to use a Non Open Source Browser. This is a Problem. This is not good for Competition and the Internet as a whole. Not good for me as I am a Linux User. The PG&E website does not even load when using Firefox. The DMV site loads but does not allow one to complete any Payments for Example. At this time one can only view Information on the DMV website.

I do not seem to be able to connect using PureVPN. Their Helpdesk advise me to sign into Chrome or Edge, neither of which do I wish to do. I wish to stay with Firefox. However, I am also a 'recipient' of the latest Windows 10 (so-called) upgrades, so it may not be anything to do with you guys. Can you help, please? Cheers, Mike Courtnadge

We are getting errors that css values not defined as if the css file is not loaded from our CDN, which is only happening in Firefox and not other browsers that we support.

We confirmed something changed in Firefox that is triggering this around FF version 132. With the ESR (currently 128.5) and the page is working correctly. When we switched back to latest 133 and the bug is there

In the situations it happens, sometimes our css is NOT being loaded. In others, it is loaded and doesn't work but I see things trying to render before the file shows up in the console network logs. When it works...it is coming up cached. So this feels like a race condition of some type

I'm pretty sure the rule is that css is blocking, because we discussed race conditions when we implemented this, so this might be a Firefox bug? If this is a Firefox bug that isn't in an esr yet, we want to get it filed against firefox and fixed before the next esr.

We even tried a hacky patch on our code's method that is in question, as well as tried putting the expected css font-family style into a <style> tag in our index.html. The patch worked on Windows. It did not work on Mac. Stepping through the code, we see `undefined` / `null`. This definitely implies that the css styles simply have not been applied when the first component asking for the theme is routing through this code.

So again: our Firefox > 132. ESR up to 131 doesn't produce this issue, so something changed in Firefox 132.

If we tried loading our css file in a parent page (just loading, not using) to get it into the mix sooner, it doesn't help. An iframe is still loading faster than its parent frame is loading that css file from the CDN.