Firefox Community Forum

bold textBad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. I cant get into my Social Security account . PLEASE HELP.

Ernest Barrow. [edited email from public community support forum]

How can I configure questions so that responses might be useful? I am specifically looking for time choices e.g. current, last six months, this year, etc.

It is November 2025. Answers for 2015 are of no use with all the changes and updates since in the past ten years.

I have really liked using the "refresh" button with my Firefox browser. The "refresh" button has disappeared from one of my two Dell PC's (I use Windows Eleven, and my Dell PC's have solid state drive). I know there are two other "help" buttons ("troubleshoot mode" and "clear startup cache"). The "refresh" button has really helped me to keep my Firefox browser working properly with my two Dell PC's. Thank you for any comments you might have about this.

Howdy! Here are the details noted in my question.

Your browser is being managed by your organization. Policy Name Policy Value Certificates ImportEnterpriseRoots true

Today (06/12/2025) upon opening a new tab, Firefox slid the new option of uploading a custom picture to apply to the background. Tried the new feature, now I can not find the setting that allows me to change the picture. I read the thread "Customize your wallpapers". The instructions are as follows; You can personalize your Firefox New Tab page by adding one of the available wallpapers. Follow these steps:

  1. In the right corner of the New Tab page, click the gear IG settings icon.
  2. In the customization panel, under the Wallpapers section, you will see different categories like Solid colors, Abstract and Photographs.

       Click the category you prefer. For example, selecting Abstract will show a variety of abstract designs. 

The problem I have is the customization panel is no where to be seen, I have click on EVERYTHING possible, it is not in my settings, why? How do find this?

I tried to use a ftp link setting firefox as the default ftp app, not realizing firefox no longer supports ftp. I am unable to reset the default app and can't find the setting to do so. I downloaded filezilla and wish to set it to be the default app for ftp. Can someone help me with this? Before anyone suggests it, resetting firefox to default settings is not an option.

hi, I recently purchased a new wireless mouse and keyboard... and my only problem is that there are a couple extra buttons on my new mouse... roughly thumb position... and are by default set to navigate backward and forward.... I'm running ubuntu linux... which results in accidentally clicking back midway through a video or podcast and losing my position more often than you'd expect... any idea how I might either reassign or disable them entirely on the software side of things? thanks. -dan

Sir,

please update previous configuration and setting of internet browser setting which is necessary

Regards

Arun koul cell no [telephone number] India

Hi! Why I lost the customize button on my Firefox's home page? This happened after the last Firefox upgrade.

Your help will be greatly appreciated.

Vaggelis J Tsagris

[edited email from public]

Bookmarks, History, Downloads are all gone missing. Can't restore them, tried failed. Been using Firefox since Netscape Navigator, Don't want to change browsers. Can bookmarks, history, downloads come back or do I have to change browsers because this small problem. thanks [edited email from public]