Firefox Community Forum

Good morning,

Every time I try to sign into my msn email in Outlook I get a message telling me that I need to sign in with a Security Key and that this is Firefox requiremqnt. I don't have a security key.

Can you please help.

Kind regards.

Greg.

Hello Since last update (145), I'm experiencing an issue where Firefox becomes unable to access the internet following a temporary loss of connection during the normal use, until I completely quit and reopen the browser.

I'd appreciate any advice on how to resolve this.

Thanks

I am subscribint to TheHybridLayer.com and the video requires access to player.vimeo.com. Unfortunately, the pop up message is saying that "Did Not Connect: Potential Security Issue." Please help me address the issue since I overwhelmed with this.

Current situation : I am using Macbook Air 11" 2015, MacOS Catalina, Firefox 145

I have my desktop extended across two displays. If I disable Hardware Acceleration in Firefox, entering fullscreen causes the window to be slightly offset down and right, leaving a thin band on the top and left sides of the screen where the desktop background and taskbar are visible behind the Firefox window.

From testing I have determined that this issue does not occur if I only have one monitor enabled or the monitors are mirroring the same display. I have also determined that the issue only occurs when Hardware Acceleration is disabled.

How do I get rid of new, but stupid vertical sidebar? I do NOT NEED OR WANT even MORE junk taking up the screen space. Is Mozilla part of Microsoft now? How do I get rid of that junk?

Heya,

I am the maintainer of the British Dictionary.

For one year that I have been working in the "shadows" on my version of US+Canada+Australian, to be released on 1-JAN-2026.

Can I add your list of proper names (~5000 words) to my dictionaries and release the dictionaries as LGPL?

https://searchfox.org/firefox-main/source/extensions/spellcheck/locales/en-US/hunspell/dictionary-sources/5-mozilla-added.txt

Thank you!

As of Nov. 12th, 2025 (Firefox Version 145.0 (64-bit)) entering full screen for a video reveals desktop/other program windows.

Tested with different websites, YouTube, Amazon Prime Video and Hulu. Issue is consistent across.

In the images provided there are two sets, one full screen the other not. Set desktop background to bright green to highlight issue.

If it matters, using dual monitor setup (BenQ Mobiuz EX2510) both are 1080p 144hz side and issue occurs on both monitors.

Have already tested basic troubleshooting issues such as restarting Firefox and computer.

Thank you.

do know computers very well, have used firefox for all my web browsing, firefox kept crashing according to screen so it opened saved apparent older version and I lost all my bookmarks and passwords, please help

I restarted my computer, but my tabs did not reappear. I restarted, but I have lost all my bookmarks, and I cannot add bookmarks. All Mozilla recommendations have failed.

Hi all,

I just updated from v143.0.3 to v145.0 and once again some small breakages in my userChrome.css have occurred.

Things have become too rounded, including tabs, the URL bar, and the chevron button.

I've solved the tabs radius issue with the .tab-background {} selector.

However, my URL bar now has rounded corners. I would like it to be square.

Please see the attached images for before & after views of my URL bar.

I have this code in place...

#urlbar > #urlbar-background, #urlbar[breakout][breakout-extend] > #urlbar-background, #searchbar
{ border: 1px solid #a1a6b5 !important; outline: none !important;   border-radius: 0px !important; }

I've also tried this as a standalone...

#urlbar-background {
  border-radius: 0px !important;
}

But the above has no effect, although it did previously.

Is there a new way to control the radius of the URL bar?

Also, my chevron button became too rounded. Is there a new way to control that as well?

Thanks.

Hello. The last few days iv noticed that if i have firefox on my second monitor maximized, i have a thick white line at the top now, yet iv never had this before in all the years iv used firefox

Is anyone else getting this?