Firefox 커뮤니티 포럼

I recently switched from Debian to Fedora Workstation. Everything works fine, even better under Fedora, except Firefox. There is this quirk, where whenever I wake up my system from suspension, and I try to search something, Firefox just shows a loading sign as if it was loading the page, but I see via the inspect tool that it isn't even sending any HTTPS requests to the server. I know this problem specifically affects Firefox, because other programs that require an internet connection, such as fetching mail via Thunderbird or installing packages via DNF work completely fine. In order to get Firefox to actually work, I have to completely close and reopen the application, forcing me to lose unsaved work in some cases. I've tried everything, from restarting my machine to waiting to see if it will be patched in a future update, but nothing has gotten better. Please help me. Thank you in advance.

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2026-08-17-03-45-35-b60b99.png

Unable to load https://fingtrainer.com as of yesterday. Been downloading the flingtrainer for single player games for a long time now and there is no issue. Try to disable/change enhanced tacking, dns, site were included in exceptions and reinstalling firefox does nothing. While the learn more link provide image solutions, none of them does anything and the disable button for the enhanced tracking is not working. Other browser like opera gx is able to load without any issue. Please assist with a solution or kindly revert the settings.

Server Not Found

Firefox can’t connect to the server at flingtrainer.com. Did you mean to go to www.flingtrainer.com? What can you do about it?

   Check to make sure you’ve typed the website address correctly and try again in a few moments.
   Check your network connection.
   Check that Firefox has permission to access the web (you might be connected but behind a firewall).

YouTube videos are playing choppily in Firefox. The video frequently stutters/freezes or does not play smoothly, even when the same videos work normally in another browser. I have restarted Firefox and my device, but the problem continues. I would like help identifying whether the cause is hardware acceleration, Firefox extensions, graphics drivers, or another Firefox setting, and I would appreciate step-by-step troubleshooting instructions.

I've tried several times with different updates to use the AI-enhanced tab groups, and it has never given me actual useful suggestions of group names. It always shows me the most generic of names and chooses almost randomly what tabs to group. This is a thing that AI should be good for, but it looks like it's unaware of what is the content of my opened tabs.

Is this feature improving or I can disable it and stop it from consuming my CPU?

Can not change default Firefox home page in settings. I am 78 years old & know nothing about computers. Thank You

Moderator note: This question has been edited to correct the formatting and add OS info.

I'm not a tech savvy user. Although I am using a personal network could Mozilla be interfering with the link of my Linux computer to the HP printer? Any suggestions on how to remedy this?

I have linux LMSDE7 Mint, Firefox will not sync. I click on the 3 top right corner lines, sign into Mozzilla, the bookmarks have not synced. Then if I go back to the same lines, it has still the "sign in" field, clicking has no reaction. It seems that mozilla is not signing in I have an other linux version, winux, there I have no problems, it syncs ok.

In the past weeks Mozilla VPN is not working in Italy. As of today, I cannot connect to any of Mozilla VPN servers. Everything fails, ping is stuck. I am connecting via Vodafone Italy as my ISP.

After I received a notification of a suspicious sign in from Brazil I attempted to change my password.

All went fine until after I received and entered the 6 digit OTC. When I clicked "Submit".... nothing. I tried to reset the password in a Private Window with the same lack of success. I can request the code, receive it via email, and enter it but am unable to submit it.

My account was accessed again from Jakarta and it now appears that the password was changed. On the Profile page it notes that the password was created 08/13/2026.

This is Firefox on Linux Mint 21.3

Hello,

I am trying to set up firefox to add a passkey to sign in into bitwarden.

In bitwarden I added my Yubico key in order sign in into my account. Unfortunately, when I try to log back into my account with my Yubico key it doesn't work.

Does firefox support passkey ?

Thank you very much in advance for any help.

I get the most generic error when trying to set up a backup password. This happens for any kind of password I try to input, including the same one used in my Mozilla account. This happens whether the password is simple or complex, regardless of length or characters.

Anyone succeed with running Firefox in headless mode under Ubuntu?

I tried:

firefox --headless --safe-mode -P headless https://quan.hoabinh.vn

but got this error:

[12545] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM

• • • You are running in headless mode.

[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt

I installed Firefox as from "https://packages.mozilla.org/apt" repo.