Firefox Community Forum

I cannot connect with my on-line banking site. When I try, I get the message "Bad Request--Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. I am able to access the site using another browser, so there cannot be a problem with the site itself. This situation has only existed since Firefox did an update. So, the problem must lie with Firefox. If it is not fixed, then I fear that I will have to discontinue using Firefox as my online browser. Please have someone from technical support contact me. [edited email from community support forum]

Please return my Computer to using Firefox default as my browser as it was 2/01 /2026.Ive tried several times to do this w/o success . I was using windows 11 and have been trying to get rid of MS365 which I never used but have been charged for a solution , but have been blocked and refused cancellation after they asked me to change my email address and PW . Insanely confusing !

I am 70, sorry if I am not clued into all the latest. I have used Firefox forever because it delete cookies and tracking. Thanks for that. I had a update last night and now I can't get into my gmail account. Thanks

I need help recovering my phones my settings my photos on my accounts and passwords have been changed on two devices by a person that was not supposed to be using any of my accounts including my Mozilla

Dear Folks at Firefox, Mozilla

In last few days I really have a big problem with trying to browse with my favorite browser Firefox. It is that cursor always goes to address bar instead of search bar when I am trying to surf the web. I tried all the fixes that I found online with changing things in about:config still with no solution.

I am running on Windos 11 and using latest Firefox version.

Kind regards Aljosha Mileta

I can't delete the malware "Startfenster. I tried to find help with "Google"-Search. Without any success! This malware exists for me in "Firefox" only. Other browsers are not affected. Perhaps anyone can help me... Thank's!

I am having a problem with Firefox. Some websites do not load correctly and certain extensions do not work as expected.

I have already tried restarting Firefox and checking my internet connection, but the issue still happens.

Please advise how to fix this problem. Thank you.

How to edit shortcut keys for the extension- Read Aloud: A Text to Speech Voice Reader ?

When trying to assign a new shortcut of my choice, it gets deleted automatically.

I was able to do so in Chrome and Edge browsers.

Please help me to assign the same shortcut keys in Firefox also..

Moderator note: This question has been edited to correct the formatting.

Not sure if this is the correct topic, but I have been using Firefox for over 20 years, and after the last update, there is an icon missing from my Firefox browser page. It's the "file" icon in the very upper left corner of the window that allows "new tab", "new window", etc. I'm still using windows10, on an ASUS PC, but never had the problem until just recently. I've restarted the computer, reloaded the window, nothing works to restore that icon/function. Thanks - Mike B