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Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release. 143.0.1 Firefox Release

September 19, 2025 Version 143.0.1, first offered to Release channel users on September 19, 2025 Fixed

   Fixed a tab crash experienced by some users caused by DLL injection. (Bug 1872261)

   Reference link to 143.0 release notes.

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Putting people before profits since 1998 ___________________________________________________ Wierd. Thanks. Greg

You sent me an email that says I have successfully created a password on "Windows 10" "I have Windows 11" ?? I need tech support because I don't know how to log into my account. Can I get a call at [edited phone# from public community support forum]. Name Paul Yoshida.

How to make Firefox my default browser on my new computer a Windows 11 computer. I’m to the point where I’ve got a pop-up window, which says sync Firefox on your phone or tablet. I am asked toOpen Firefox on my mobile device. Then Go to the menu and tap sign in. That’s where I am. Now I’m asked to tap “ready to scan” and hold my phone over the code. Unfortunately, my Firefox app does not show a ready to scan option after I get to sign in. Help!!

Hi,

On some websites (e.g. archlinux.org) most numbers are not rendered. See attached screenshots showing the same page on Firefox and on Konqueror.

In my font settings, I do allow pages to change fonts. Some pages (e.g. this one) do change the fonts and appear well. However, if I disable the feature, then they also break.

I'm using: firefox 145.0.2 (64-bit) archlinux plasma-desktop 6.5.3 wayland 1.24.0

Any idea?

Whenever I search something and there is a youtube video included in the search results, all links direct to that video. In the example image it show me hovering over a website link and in the bottom left hand corner it instead tries to open a youtube link at the bottom of the page.

Hello,

I have today encountered a reproducible issue with Firefox 145.0.2 (64-bit) on my system (CachyOS Linux). Whenever I press the "Print" button in the printing dialog for a PDF file, the browser freezes and no longer reacts to anything. I had to kill the process manually and try again. I have then downloaded the PDF and opened a different application to print it - that worked fine. Is this a known issue with Firefox? Does anyone have an idea how to fix this?

I already tried resetting the printer settings in the browser, but that did not change anything.

Thanks, Stefan

This falls under: Accesibility, or passswords, or privacy & security... Or, this fumbducker shosn't doe nit. Anyhow, if you've more smarts and knowledge than me, I need to solve the above mentioned problem. Many thanks.

So I started using Firefox on my older and newer laptops, but I've noticed that on my older laptop it has started giving me the message "You must log in to this network before you can access the internet", although I am already signed in on my Mozilla account there too. My newer laptop has had no issues for the record. Both systems are running windows 11, both have the same account that I am using, etc. If it makes any difference, my older laptop is using an ethernet cable whilst the newer one is connected via Wi-Fi. When I ran into this issue yesterday on my old laptop, the issue somehow resolved itself after I created a bugzilla account, although I am unsure if this was coicidence, so now I am confused why the issue has showed up again. Awaiting any kind of help or advice, thank you.

Moderator note: See also /questions/1551659 for a screenshot.

Hi. When I click on the arrow to go back to previous page, nothing happens. This occurs on any website I am connected to. Any suggestions would be greatly appreciated. Alan

Hello,

I am experiencing an unwanted UI behavior in Firefox. When I select text on any webpage, Firefox displays a floating “Ask ChatGPT” bubble above the selected text. This happens regardless of the site. I want to disable this feature, but Firefox provides no setting or preference to do so.

This is not caused by any extension. I verified this by checking about:addons, and I only have the following extensions installed:

DuckDuckGo Privacy Essentials

Firefox Translations

Gibiru for Firefox

None of them inject any ChatGPT functionality.

I then opened about:config to disable the feature, but the usual preferences do not exist on my system. Keys such as:

ui.textSelectEnabled

browser.selection.menu.enabled

browser.ml.chat.enabled

browser.ml.chat.openai.enabled

browser.ml.enabled

are missing, and Firefox only shows the “add new preference” (+) icon. That means Firefox did not expose any toggles for this behavior.

I am including a screenshot showing the unwanted “Ask ChatGPT” popup that appears when selecting text.

I need instructions on how to permanently disable this text-selection popup, or confirmation on whether this is part of a controlled rollout or experiment that cannot be disabled on my version of Firefox.

Thank you.

I am logging in to my browser as normal, but am still getting the notification "You must log in to this network before you can access the Internet". This is cutting me off from regular internet access as if I was not logged in.

I have recently switched computers, and since it has been a while, I can't remember the setting on the 'about:config' page that I need to change to where when I open a new browser tab, it opens at the end of my list of tabs, rather than as the next tab. Thanks!

Cannot open my cart nor add items to my cart on https://www.guitarcenter.com/Black-Friday-Electric-Guitar-Deals.gc?filters=categories.lvl0:Guitars&icid=LP12589#paginationTopAnchor I can take that same URL and immediately open it using Google Chrome.