Firefox Community Forum

When I go to the website https://www.rebateinternational.com/RebateInternational/contactUs.do and I try to fill out the webform on that page and use autofill to fill in the e-mail address, it gives me an error message that says "please enter a valid email address" even though the e-mail address is valid. Also, if I do not use autofill, but simply type everything in manually, it still gives me that same error message. This problem does not occur in Google Chrome, but it does occur in Firefox. Sometimes I can solve the problem by erasing part of the email address and then re-typing that part, but that doesn't always work. It also doesn't work if I erase the entire e-mail address and type it in manually. The problem does not appear to be caused by add-ons and does not appear to be caused by hardware acceleration, because I have disabled add-ons and have turned off hardware acceleration. It also does not appear to be caused by cache and cookies, because the same problem occurs after I clear the cache and cookies. I will appreciate any response you can provide to help solve this problem.

Hi everyone.

This could be related to the corrupted file I had that was solved here: https://support.mozilla.org/en-US/questions/1492585

I mean something else could have been corrupted. I've been getting the following error on a website:

> "The site at [url] has experienced a network protocol violation that cannot be repaired. > > "The page you are trying to view cannot be shown because an error in the data transmission was detected."

I thought it was a website issue. But it worked fine in Edge.

I tried the Ctrl+F5 but nothing changed (also tested the website in private browsing in both FF and Edge; still works fine in Edge).

Thanks!

Edit: I launched the factory settings profile from about:profiles (last used years ago when I moved my main profile from an older PC) as a test and the issue persists.

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

Hi, I have a virtual synth called Omnisphere. I open Firefox and go to YouTube, and I'll select a video to play. (I typically do this so I can use the Omnisphere synth to play along to for practicing my keyboard skills. YouTube will play just fine, but when I open Omnisphere, then try to play the YouTube video simultaneously, YouTube will just hang and won't play. I close Omnisphere and YouTube will play fine again. I know you'll think this is an issue with my virutal synth Omnisphere, but the strange thing is, that that same company makes another virtual synth called Keyscape, and when I try playing Keyscape and YouTube together, it works just fine. To me, this seems to be some kind of sharing issue, and likely a sharing setting of some kind. The audio settings in both Omnisphere and Keyscape are identical, so why would one work, but not the other?. I couldn't find any kind of virtual device sharing settings in Firefox or YouTube. The company that makes these virtual instruments has told me that it works fine with Google Chrome and Microsoft Edge, that's why I'm leaning towards the browser being the issue. Any idea what could be causing this? Thanks very much, I appreciate it.

Paul

I can no longer access my local TrueNAS server nor router via Firefox. My current version is 133.0.3. Safari has no trouble. Firefox gives no warning, no Advanced button, no option to bypass security. All I get is: "Unable to connect An error occurred during a connection to 192.168.0.102.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web."

I have tried so many settings, troubleshootings, workarounds, I can't begin to list them. It happens in troubleshooting mode. I have created SSL certificates on the server many different ways to no avail. I'm thinking I will have to abandon Firefox with it's obscure, no-way-through security. But I wanted to ask for help first. Please help.

Hello, Thanks in advance for your help. I am having trouble logging into "trusted" web sites with Firefox and every update seems to add to my problem. By "trusted" web sites I mean sites like Charles Schwab, Spectrum and iCloud as well as my city's water department and my local hospital's portal. It doesn't matter whether I use "normal" Firefox or its privacy mode or safe mode-the problem persists. I am running Firefox version 134.0.2 but the problem goes back several months. I have Windows 10 and use Malwarebytes Browser Guard. The only other add on I use is Print Friendly & PDF. It doesn't matter whether these addons are running or not. The problem seems to involve either a loop, blank fields or very odd error messages. Some examples are below:

iCloud allows me to get to the point where it asks me to supply the 6 digit verification code. I enter the code and the site loads. Approximately 2 seconds later, before I can navigate to anything in iCloud, I am taken back to the log in screen to start over. The loops repeat as often as I want to try. Clearing cache and history does nothing. Since there is nothing abnormal (no error message or blank fields) I have not included a screen shot.

Spectrum allows me to enter my credentials waits a while and then gives me an odd error message about Feature Unavailable and suggests that I try logging in from home. I might add that all of these problems occur while I AM at home. Screen shot attached.

Charles Schwab allows me to get to the log in screen but the screen is unusable. There is a message that the session has timed out and I need to log in. The log in sections of the screen are blank which leads me to believe that the page is not loading all the way but that is a guess. Screen shot is attached.

I can log into all these pages with Edge (which I dislike using) with no problems at all.

I have Firefox set to automatically delete cookies and site data when closed. Privacy is set to Standard.

I would really appreciate any help that you can give me. Please note that the screen shots are BMP files that I had to rename to GIF files to get them to upload.

Thanks again,

Charley

I can only open 2 tabs while using my Seeking Alpha financial program on Firefox browser. If I try to open a 3rd tab the Seeking Alpha program will not open. This issue just started within the past few days and doesn't occur when using Seeking Alpha program on MS Edge browser. Hopefully you can fix this problem quickly otherwise I will have to start using Edge as my default browser.

https://goinbali.com/ my website is still on development, but I can't open it using firefox. But it work on Edge and other chromium based browser. Already did : - disable ublock origin - updated to FF latest version

Hi. New issue today. Running FF V 137.0.1. that was updated on 4-8-25. Unable to login to Credit Union online banking. Cleared browser. Nope. Restarted FF. Nope. Restarted computer. Nope. Called Credit Union: They saw no issues with account, suggested trying MS Edge browser. Boo. Hiss. Tried Samsung Android Smart Phone running FF V 136.0. Works fine. Rolled back to a previous restore point that had FF V 137.0 running. Scary stuff. Same login problem. Fired up MS Edge. Works fine logging in to CU account. I see this issue comes up occasionally. Is there a fix in the works? Will it go away AIBM? Thanks for being there. greg

I can't log into my ATT email an the new Mozilla, I get an error message. But I can login from a Mozilla Private Window. I can also sigh in on Chrome and Edge. Just not Mozilla.

How can Mozilla fix this? Or how do I get this info to them so they can do repairs. It's not an ATT issue since I can login elsewhere.

Hello,

I apologize if the topic is incorrect, but I didn't know which applied to my situation the best.

Starting on Monday of this week (4/28/2025), YouTube no longer loads properly on Firefox for me. The entire page is covered in video slots with no videos and if I try using a link to a specific video, it will take me to the page, however the video will not load or play, additionally any other elements such as comments or suggested videos will not load. I am using the latest version of Firefox Developer Edition.

I have tried all of the following:

• disabling all of my add-ons
• clearing cache, cookies, and history
• uninstalling and reinstalling Firefox
• logging in and out of YouTube
• Reaching out to YouTube (they told me to just use Chrome)

I have asked my friend who also uses Firefox and YouTube works fine for him, so I'm not sure exactly what is making it not work.

Thank you for your time!

Ive been told that firefox does not support https://web.minidisc.wiki/ (Web minidic pro) and only google chrome does. I hate google chrome. how difficult would it be for firefox to support usb devices like a minidisc recorder player. I guess its down to drivers or some form of plug in? Could firefox be made to support my minidisc or is it too much of a security/software performance issue? Cheers Mark

On NY Post when I try to post a comment, it says I need to log in first. But I am already logged in! I log out and log in again, and it still thinks I am not logged in and am prevented from posting.

I can use a different browser with no trouble. What is the Firefox setting on Firefox that does this? How can I correct it?

Hi, I have noticed that for the last three weeks, i have been unable to access Whatsapp web using the Firefox, is there a problem? While using other browsers, the whatsapp web is accessible. Please rectify that coz firefox is my default browser. Thank you.

Regards, Georgiadis

Bonjour le monde,

I have recently installed a weather station on Weatherlink.com map page.

I can't see my station with Firefox my favorite Browser. I can see my station when I use Chrome.

May it possible for me set a parameter . I could be a non web conformity in the page of weatherlink. So you guessed I not a pro in IT so I will really appreciate some help in order to stay with my favorite browser.

Many thanks in advance. GD

Are you aware of the incompatibility of these two government websites that no longer are compatible with Firefox? The VA appointments of the HealtheVet site are no longer working and when I called for support they sent me to the chrome browser and says it is not compatible with Firefox. The same is now also true with the SSA website. This is a problem with Firefox or the government being forced to use chrome compatible sites only. YES, it needs to be fixed on one side or the other. Do I need to contact Congress?

Randy

Every couple of weeks Firefox decides it's not going to load my webpages. I've tried deleting the cookies which works, but then I have to input all my info on sites I use, and I find that very frustrating. I tried running it in troubleshoot mode, not sure exactly what did it then but it fixed temporarily, but it still keeps happening, and troubleshoot mode doesn't fix it any more

Dear Mozilla Community/Support Team,

I am reaching out to report an issue with my <a href="https://chipotlmenu.com">Wesbite</a>, which is not functioning properly when accessed through Firefox.

The website operates flawlessly on other browsers such as Chrome, Microsoft Edge, and Safari. However, on Firefox, I have noticed slow loading times, broken images and layout inconsistencies

This issue negatively impacts the user experience for visitors accessing the site through Firefox, which is a critical concern for me. I kindly request your guidance on diagnosing and resolving the problem. Please let me know if you need additional details or technical information to help investigate further.

Thank you for your time and assistance. I appreciate the dedication of the Mozilla team in supporting website compatibility and look forward to your response.

Best regards, Lily Floori Lilyfloori@gmail.com Owner, Chipotlmenu.com