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.

My computer, being 7 years old (and without the space to upgrade to WIN11), has always been a bit slow with low RAM and storage. The swap from Chrome to Firefox essentially gave it a second life, as Firefox didn't need a lot of space to run. Recently, though, it locks up with almost every search, refusing to let me x out a tab and try to save myself for 3 minutes or more, and the bluescreens have come back, too. If chrome hasn't also gotten worse, I'm considering switching back. Does anyone know what happened? I haven't installed anything new.

It's really frustrating and disappointing, because I thought I had a solution when I swapped to Firefox.

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.

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!

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!

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 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.

Hello,

To explain the issue at hand I will copy the email I sent on Sunday to the Mozilla support team, by a member of which I was subsequently redirected here.

I am looking for a solution to a serious issue that occurred on my Mozilla Firefox browser on Thursday this week. It concerns a website called blankslate.io, which I use very frequently for taking various notes. On this site, it is possible to create a permanent account for storing one's notes, which I did not do because I thought it would not be necessary (though after this incident my mind on that has been changed). Without a permanent account, the notes taken there are saved locally only on the specific browser in the specific device. Onto the issue itself. My PC had been running critically low on memory, and, because of some misleading information I had received, I thought it was not possible to free more than only a very small amount. On Thursday, while I was playing a game, the remaining amount ran out (which surprised me because there had still been enough for everything to function properly when I checked before starting to play). To free some memory space, Firefox then performed an action which I will not be able to identify (please describe to me what this action was if you can) that resulted in me getting logged out of websites in which I have created accounts. I had no trouble logging back in everywhere except for blankslate.io, where, because of the way the notes are saved on the specific browser only and my lack of a permanent account, I now have no way of accessing my work, the site displaying a message of "This note is private" if I try to open one of my saved notes from either my browser history or my frequently visited sites. Neither is there any way of contacting the website's developer, because of the site's nature, or finding advice online, as the site is not a widely known one. Is there any way for me to regain access to the notes I had saved on this PC's Firefox browser? I still have access to all of the notes I had saved on a different browser or on different devices, so all of my work has not been lost, but this PC's Firefox browser contained, among others, my single most important note, one I have been using daily for 5 years and am highly distressed about not being able to access anymore. Please get back to me at your earliest convenience and, if it is possible to provide me with a way to resolve this issue, I will be immensely grateful.

Thank you for taking the time to read my request, I truly hope there is some way someone can help. (I can add the optional troubleshooting information as well in the case the issue can be solved with its help)

Hi. I am wondering if there is a way to make the collapsed sidebar hide completely when the mouse cursor is not touching the left hand side of the screen.

I know its possible to make the sidebar expand on hover but id like if its gone until i hover over it.

Looked trough a lot of the help articles and googled about it, but could not find any solution to my "problem"

( picture shows the collapsed sidebar, would like that hidden fully unless you hover over that space )

Thank you Stig

When using the Vertical tabs layout, is it possible to display the contents of my Bookmarks Toolbar on the vertical sidebar? (screenshot attached)

I know that on vertical sidebar, there's already a star button at the bottom to open bookmark. But I want to display the contents of my Bookmark Toolbar directly on the sidebar. Is it possible?

the crash reports have been submitted 748057a7-6757-6eb2-955e-9602f9e91008

is there anything else I can do to get this looked into/resolved?

Laptop System: Acer product: Nitro AN515-57 Linux Mint 22.2 Zara \n \l

Hello. I can't print pdf files from Firefox but I can print them from Safari on my Mac. Using Firefox, I keep getting "The operation couldn't be completed. Permission denied." I have looked through Firefox settings and can't find anything about pdf file printing options.

I am informed here that my cookies are not enabled and that they should be , buy following EVERY link I can find from "settings" to "privacy and security" there is nothing that says "enable cookies" ,also as usual the last link given never allows me to find an answer? Where is this answer is all I am asking for, nothing too difficult is it?