I have only one instance of Firefox to run.

How can I correct my installation so it does not think something else is running/updating Firefox?

Thanks,

Craig

I updated firefox, and all my addons and sign ins are gone now. Search history and tabs remained intact. It also created a folder on my desktop, but I'm not sure how do I "extract" my old data from it.

I realize this is in a beta OS, but I imagine it'll need to be addressed at some point.

Anywho, when using vertical tabs, the left side expand/collapse button lives underneath the close, minimize, full-screen OS buttons.

If I turn on "always use private surfing", can I not have shortcuts on my Firefox landing page?

I had six shortcuts on my landing page; however, I turned on "always be incognito", and my shortcuts disappeared, and I do not see an option to add them back.

Are they mutually exclusive? If not, how do I FIX THIS?

If I turn on "always use private surfing", can I not have shortcuts on my Firefox landing page?

I had six shortcuts on my landing page; however, I turned on "always be incognito", and my shortcuts disappeared, and I do not see an option to add them back.

Are the two mutually exclusive?

I have three computers on a home network. All 3 have Firefox on Windows 11 Bookmarks on Two are in sync. The third will not. When I login it has my email and password but creates a new profile.

Every time the browser autofills a password it asks me for my Windows password. I don't want this behavior, as this makes password autofill completely pointless. How do I disable this "feature"?

I'm using Firefox-bin on Gentoo, wayland, and for a long time with all updates on my main firefox profile smooth scrolling can not be disabled: Both UI settings called "Use smooth scrolling" and manually setting general.smoothScroll on false - does nothing. Setting general.smoothScroll.mouseWheel on false actually disables smooth scrolling for mouse wheel, but smooth scrolling still happens on keyboard scrolling (holding up or down arrows).

On same browser I have two different profiles: On one of them smooth scrolling were disabled long ago On another one I successfully disabled smooth scrolling this day (it's some default one that I haven't used)

There are no extensions that could override this and I tried disabling them and rebooting and trying again too. I haven't touched any other scrolling relating options except enabled "autoscroll" and tried disabling apz.gtk.kinetic_scroll.enabled but it made no difference.

I found only few entries that describes same thing from long ago but they seem to not be applicable to this one. This bug is only mildly annoying because I rarely use keyboard scrolling and general.smoothScroll.mouseWheel = false already solved half of issue but I'm worried a little if something is wrong

I have not changed any settings related to fonts in firefox (running on windows 10 desktop), but I have this issue where flag emojis are displayed as a letter code on the page itself, but still display correctly in the tab at the top. is there a known fix for this?

I would like to know what happened to all of my bookmarks I had when I opened my firefox, nothing is there and I can't seem to find out how to restore them.. what ever you have done to firefox, mozilla I hate to say I don't like it at all.. thanks

<title>bionomial expansion</title> <meta charset="UTF-8"> <script src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"> </script> <script src="https://cdnjs.cloudflare.com/ajax/libs/polyfill/7.12.1/polyfill.min.js"></script>

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\[   (1 + x^2)^{-1/2} = \sum_{n=0}^{\infty} \binom{-\frac{1}{2}}{n}  x^{2n} \]

\[   \binom{-1/2}{n} =\left (\frac{(-1)^n (2n - 1)!!}{2^n n!}\right ) = 1 - \frac{1}{2}x^2 + \frac{3}{8}x^4 - \frac{5}{16}x^6 + \frac{35}{128}x^8 + …   \]

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?

Hello dear helpers, When I click on a webpage link (or right-click a link to open a tab in a container), Firefox repeatedly opens the same tab all across the tab line; maybe 20 or more of the same tab. I would be grateful for help if anyone knows how to solve this. Thanks, -AnneF

I downloaded the most recent Firefox update (version 139.0.4) and since then, Firefox has been prompting me to restart to continue using Firefox every day. When I give the go ahead to restart, I get a pop up that says I need to either exit the Firefox client completely, or create a new profile to continue using it because Firefox detects an older version (this is even after updating it manually).

It's made about 5 profiles since the 10th, and they're all still in tact. I clicked my very first one and it very much still works (and even gives me a popup when I open it in a new window that says Firefox is using the latest version). It's been really disruptive to my work flow as it has happened several times in the last two days. I keep checking my settings and it says that I'm updated to the latest version of Firefox, but it continues to kick me out.

When I use non-incognito browser to go to https://www.truist.com and enter a login and password that is valid I receive a JASON response message window that says {"type":"about:blank","title":"Bad Request","status":400,"detail":"Failed to convert 'userIdEncrypted' with value: ","instance":"/dias/authenticate"} If I use a new private window I can login normally. Others have said the same thing but the suggested remedies do not work. I have delete all cach, cookies, and site data associated with the truist.com domain and the same problem happens. If I use Edge all works well with the truist.com site. Where does this useridEncrypted come from? Anyway, I thought I would try to clear out the userid which was prefilled in with the help of Firefox and just retype my id. Viola, everything worked. So wherever Firefox is retrieving the saved login id from, that must be corrupted somehow. Hope this will help somebody that is experiencing this problem.