Firefox Community Forum

I have a local file I wish to view in firefox without starting a HTTP server (it's only docs for a crate I'm building) however Firefox is unable to open the file despite the file existing and having correct permissions. The file was in a separate mount (disk) to where Ffox is installed so I copied to to /tmp/ to remove that as a variable but still no joy..

➜ ~ file /tmp/index.html /tmp/index.html: HTML document, Unicode text, UTF-8 text, with very long lines (3556) ➜ ~ ls -la /tmp/index.html -rwxr-xr-x 1 ben ben 4208 Dec 30 14:04 /tmp/index.html

Am I missing some new setting which allows local file browsing using the good old 'file:///' protocol?

Thanks, Ben

OS Info: PRETTY_NAME="Ubuntu 24.04.3 LTS" NAME="Ubuntu" VERSION="24.04.3 LTS (Noble Numbat)" VERSION_CODENAME=noble

F/Fox version: 146.0.1 (64-bit)

As of 12/9/25, Firefox seems to now prevent Theme add-ons from working if there is a contrast setting configured in Windows configuration. (Version 146.0) Previously, this allowed a very aesthetically pleasing view. I would greatly enjoy having that option again. Thank you.

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]

when I go to a web site I get an error msg saying You don't have permission to access "http://www.att.com/" on this server. why and what does it mean and how do i fix it?

I use Firefox because it has less AI bull than other browsers, and even then I still have to use config to get rid of all the stuff you've already added. It's irritating to have to do it. Stop adding more and remove the garbage AI stuff you've already added. Thanks

O, woe, I feel like Jacob Marley wailing in torment, ha! My correctly-set selection of "Always ask you where to save files" still does not function in 146.0 on Windows 10 after I have gone through every permutation of settings, updates, restarts, etc., I can think of. Why does it always every time only automatically download to the download "Save files to" location (which one MUST set with no option to not set a download location). I have even selected "Ask whether to open or save files" on the "What should Firefox do with other files?" section. I want to be asked each time where to download just like Firefox used to allow and still falsely promises. Am I doing something wrong, or is it a vast Left Wing conspiracy with which Firefox is colluding to oppress people who want choice over their lives like me? :-)

I tried logging into my account on a website. I decided to click on the passkey option to log in. Firefox had ask to access my passkeys and I mistakenly declined. But the pop-up doesn't happen again. It goes straight to "authentication failed" without trying to ask me again to access the passkeys. I don't see any setting for this in the settings page.

How do I change the permission to let Firefox access my passkeys? Or how do I make Firefox and Windows ask for my permission again?u I'd like to not have to reinstall Firefox if I could.

In version 146.0.1, or perhaps even earlier, I noticed that if you set a Primary Password to log in to the browser, you can reset it and log in simply by clicking the "Cancel" button. This allows you to access all of your user tabs and links. I hadn't noticed this before. It defeats the purpose of setting a Primary Password. I noticed similar issues in the Tor browser, but you can't set a Primary Password there at all, even though the feature is there, and it's built on the Fire Fox engine. Please fix this issue. No buttons should allow you to log in without entering the correct Primary Password.

Since Version 145.0.2, November 26, 2025, 1. firefox won't print anything anymore. No matter the way that I select something to print (print to PDF, print to printer), firefox won't print anything anymore. The print options screen does pop-up when "print" is selected , but when "print" is selected on the print screen pop-up nothing happens. This includes the "print to PDF" function as no "save to" file folder pop-up opens to select where you want to save the pdf file to. After an update prior to the "Version 145.0.2, November 26, 2025" firefox no longer allows you to move your tabs from their original positions to the left or right along the tab bar in the browser. I use to be able to click on & select one or more tabs and move those tabs anywhere to the left or right of their original position to anyplace along the tabs bar. NOW at present, the only way to move any tab's position is by "right clicking" on the tab, select from the drop down "move tab" and selecting 1 of the 3 options ("Move to start", "move to end", & "move to new window"). You can also add tabs to groups through the "right clicking" process. Unfortunately you can't simply move tabs in any other ways without using those "right click menu options. This is VERY frustrating because I constantly move tabs (or strings of tabs) to better group them without having to add them to specific "groups". And speaking of groups, you can no longer rearrange the tabs in "groups" either.

These are both some of the most basic and general functions for firefox that no longer work in firefox 64 bit on windows 10 OS (my primary PC, but the same holds true on Windows 11). You should also note that recent updates also occured on both Windows 10 & Windows 11. I am still currently able to print from and move tabs in the Edge browser which I have had to start using more & more since these functions stopped working in the firefox browser. I've always preferred using firefox even though it is a huge resource hog, but if firefox doesn't fix these problems soon. I will have to resort to using the Edge browser over using the firefox browser. That reminds me of a 3rd problem with your "unload tab" function, 3. The "unload tab" function ONLY works if you click on and open the single tab first. The "unload tab" function ONLY WORKS for a SINGLE TAB at a time. When/if you select multiple tabs and select the "unload tab" function in the "right click" drop-down, ONLY the first tab selected and that you are currently on, using, and viewing will "unload" while NONE OF the remaining selected tabs will "unload". You need to make a way to "unload" ALL TABS that you are NOT currently viewing/using as "unloading" tabs one at a time is painfully tedious. The "unload tab" function would be a great idea to reduce firefox from being the huge memory hogger that it is, but only if you make using the "unload tab" function's use less tedious. Perhaps Mozilla should consider making the "unload tab" function less necessary, by either making the "unload tab" function automatic and not NEED to run every opened tab until said tabs are actually in use & actively being used OR BY making firefox less of the enormous resource hog that it has become.

Hi, i synced everything, in your browser, checked it few times, i had all my bookmarks from chrome to firefox few months ago, reinstalled windows, downloaded firefox and connected to account its clean, no of my information is there, wtf? i forgot the password, so recovered it. Give back my data for fuck sake, or it was mistake comming from chrome to firefox?

I have messenger loaded but with Firefox i can not video call when i want to call a friend or family. I have no way to call any one i do have a web cam. do i need to go to Chrome every time i want to call. Messenger has stopped desktop messenger that was how i could call but now i can not is there some way to Facebook video call on Firefox please let me know thanks I want to stay with Firefox why is there no way to get video calls on Facebook??

I was positively surprised recently when the new Firefox profile manager (about:profilemanager) was introduced. https://www.tech2geek.net/how-to-use-the-new-updated-profile-manager-in-firefox-2025/ is an article about that.

However, I thought it's just a new visual UI with an in-browser switcher for the existing profiles (that I already had setup). However, it does not appear so.

The differences I see:

1. 1. 1. old profile management

• was managed by `about:profiles` or when starting FIrefox with `-P`
• is saved in `~/firefox` and the `profiles.ini` clearly and quite obviously mentions them there, so it's easy to manage them.

I also found this old support article: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

1. 1. 1. new profile management

• automatically asks on startup if more than one profile exists
• is managed by `about:profilemanager` or with the Firefox burger menu
• seems to be saved in `~/.mozilla/firefox/Profile Groups` (Linux path here) in some .sqlite files, and I do not quite understand the format. Not mentioned in `profiles.ini`.
• also, when you change something here (even like opening a profile?), you cannot open `about:profiles` anymore, because it says "Some Firefox process has made changes to your profile, […] you need to restart Firefox", only after a restart further changes would be possible, which I find quite confusing but it also indicates somehow the features belong together?

And this seems to be the new one: https://support.mozilla.org/en-US/kb/profile-management#w_whats-the-difference-between-profiles-and-multi-account-containers

1. 1. Questions

• What are the differences here (I may have missed)?
• How can the new profile feature save so few files? Is it technically called "profile groups"?
• And the most important: How can I migrate an old profile? (In order to use the new features and GUI etc. I quite like)