Firefox Community Forum

I had some AI models downloaded, but noticed recently that the AI tab grouping wasn't working. I saw that the models for this were listed as being 0 bytes in size. I deleted all installed models and now can't install any as they always show as being 0 bytes.

I'm able to install the models when using a new profile. I have tried in troubleshooting mode and disabling all extensions using my profile normally but neither of these actions have worked.

I'm running Windows 11, 25H2, on ARM64, with the latest version of Firefox installed.

Hello,

I am writing to inquire about the difference in the fullscreen video transition animation style between Firefox on Windows and macOS.

Observed Difference:

• Windows: Uses a smooth fade-in/fade-out animation when entering and exiting fullscreen, which provides a polished user experience.
• macOS: The transition is present, but it lacks the distinct Windows-style fade effect and feels less smooth or different in style compared to the Windows version.

Settings Checked:

• I have confirmed that the about:config preferences full-screen-api.transition.duration.enter and full-screen-api.transition.duration.leave are both set to 200 200. These settings did not enable the identical Windows fade animation on macOS.

Core Question:

• Is there any current method (e.g., through advanced settings, flags, or extensions) for a user to apply the exact same smooth fade-in/fade-out fullscreen transition animation seen on Windows to Firefox for macOS?
• If there is no current way, is this difference due to limitations with the macOS graphical environment, or is there a plan to unify the animation style in future updates?

Moderator note: This question has been edited to fix the formatting.

One page of my online scheduling software often doesn't load all the way. It's a list of clients, not super-long. It often only loads the first 10-15 names (out of about 80). Eventually this pop-up appears: "This page is slowing down Firefox. To speed up your browser, stop this page."

I'm on a Windows 10 desktop with PLENTY of speed/memory. That's not the issue, unless Firefox isn't using the computer optimally.

I've been having tons of issues with Firefox so a few days ago I did a "Refresh." This helped, but obviously didn't fix this particular issue.

Against my better judgement I download the latest update for Firefox, now my computer is a mess. Things like the row of saved sites between the search line and the space where web address shows is gone. I can find the web sites , but I want the line back. I don't understand ANY of your directions or support pages. I am old and can't keep up with technology any more - I'm about five years behind.

If I just uninstall the latest version of firefox will that fix it? Or will it uninstall ALL of firefox. And please don't give me long involved directions or I will just give up because I don't understand.

Which version of Firefox (Windows, Mac & Linux) will make the local network access (LNA) enhancement generally available? We at Box would like to inform our joint enterprise users and administrators to expect this enhancement and provide them guidance on how to manage this change.

After a PC reboot, when I launched firefox, all of my data was gone (extensions, bookmarks, passwords, etc) and it was as if I was launching Firefox for the first time. I wasn't sure if something happened to cause firefox to become corrupted, so I did a complete reinstall (uninstalled firefox + deleted all mozilla folders + deleted mozilla registry entries).

After reinstalling, Firefox now does not ask where to save files. Both "Always ask you where to save files" and "Ask whether to open or save files" are enabled in firefox settings. browser.download.alwaysOpenInSystemViewerContextMenuItem , browser.download.alwaysOpenPanel , and browser.download.always_ask_before_handling_new_types in about:config are all true as well.

Is there anything I can do to fix this issue and get firefox working as normal?

gmail wants eat my cookies and will not let me play because I have them blocked. I restarted my computer but changed nothing since yesterday when gmail was perfectly happy with my crumbs?

I have the settings set to ask where to download files I'm saving to my computer. When downloading and/or printing a document, Firefox saves a copy to my desktop even after the "save to" prompt and saving the file to a specific location. How can I stop this?

Thank you in advance!

Here is my situation. Firefox 145.0.2 is NOT open. A link from another app (like Thunderbird) opens Firefox, but it opens without a title bar. How can I make it open Firefox with a title bar?

I have Google Calendar open in a Firefox tab. I want to add the tab to my Mac desktop Dock for quick access. I've tried dragging the tab to the Desktop and then dragging from Desktop to the Dock without success, and searches generally return how-tos for only Chrome or Safari. Help!

I made the mistake I will never make again of signing into a Mozilla account in Firefox. Suddenly everything about the browser was completely different. I realized it had synced to my primary computer without asking me a [expletive] thing about what I wanted to sync or if I wanted to do that now.

How do I unsync the second computer so that Firefox goes back to the way it was before the unexpected forced sync? I had those settings the way I wanted them for a reason.

Firefox 143.0.4 on Ubuntu 24.04

Hello! I saw this question (below) on the forum. I'm having much the same problem. Firefox is crashing nearly all my tabs, even those that had been previously loaded. I cannot use it at all. Clicking "Restore this tab" does nothing. (Firefox has crashed tabs in the past but in those times, "Restore Tab" actually worked.) I actually had to write down on paper the subject and website of each of my tabs (and I had a lot of them, so this took a long time) because when I clicked on each already-loaded tab, Firefox would crash it and I'd lose it--and then it would crash the next one in line before I even got to it.

I have been using Firefox for years and it has never given me this much trouble. I've had tabs stored on it for a long time. "Restore session" always worked if I had to restart my computer for something. It does not work now because every tab crashes with the notice: "GAH! Your tab crashed. Click 'Restore tab' to restore your session." But "restore tab" simply crashes again.

Firefox has allowed a Masterpiece Theater tab and a link to my local newspaper, Pioneer Press (I have a subscription). Others crash. Even some Firefox pages have crashed!

After writing down the info for all my tabs, and then clicking on each one so it would crash and then deleting them so that Firefox had no tabs listed, I tried restarting my computer but this did not help. I also checked Malwarebytes, my anti-virus program, and didn't see a problem there (and I've had it for two years, always using Firefox with not much problem). I think I clicked on "update Firefox" recently and it seemed to work for a while after that, but now this.

I know a little about computers as a user but I'm not very savvy about repair or about all the different commands and controls. Trying to browse through all your articles to find how to fix the problem is exhausting, time consuming and leaves me really confused because I don't really know how to do the things each article suggests. I don't have the time to read article after article and still not be able to fix the problem.

Do I actually need to delete Firefox and then reinstall it? I'd lose all my tabs (website history is still showing under "History), stored passwords and stored credit card information and all other stored information. I'd have to start over completely.

I love Firefox and don't want to switch to Google or some other browser but I might have to if this continues.

According to your instruction to the user below--please be sure to view her note--here are some of my recent crash reports. Thank you for any help you can give me. Please also tell me how to reply to you if what you suggest does not work.

FYI, I have Windows 10.

--Martha Henderson (crash reports below).

bp-c0fada24-adcc-4f0e-8675-212760251125 bp-f907e9c7-8ec2-48b7-a1b8-6dae40251125 bp-629ea128-83f7-4ac7-ba8c-991530251125 bp-420f47fe-6a45-416d-b25a-c3ee50251125 bp-a39e7bbb-cb91-4038-ab19-43e9f0251125 bp-5bf134fb-3a41-4b09-8b15-cc2190251125 bp-427e7858-be55-4d41-80cd-75da20251125 bp-56e2d61b-3193-436f-a6c4-d715e0251125 bp-94074f0a-1aa5-40c9-a56d-6cb7b0251125 bp-3748b89f-591c-4326-ada6-a093a0251125

"rose.treasure 11/13/25, 10:10 AM

No matter what I try to read or go to, Firefox crashes repeatedly. I literally cannot use it at all. I keep getting: Gah. Your tab just crashed. We can help! Choose Restore This Tab or Restore All Crashed Tabs to reload the page/pages.

Clicking those options fixes nothing! How do I go back to the previous version, please?"

I just went through this a few days ago but once again find the message ""The bookmarks and history system will not be functional...." I have recently downloaded and used CCleaner7 and wonder if that app is causing the problem. Help, please!

Everytime I search something firefox duplicates the tab and refreshes instead of searches. It will do the same when tapping a result link. I have cleared cache, deleted my data, restarted my phone several times and removed all extensions but the problem persists. Is this a common issue or is there any easy fix? Im ready to give up and go back to chrome if nog

I have done everything i can possibly do to stop this problem and now its random. last night i lost 33 important tabs. everything in the settings and config file is checked off not to close the tabs yet they randomy close anyway. this is a deal breaker for me after years of putting up with it. unless someone can help its back to google i go.