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Keep your tabs. Free up memory.

Unloading a tab keeps it visible while freeing up memory and CPU.

Right-click on one or multiple tabs and choose Unload Tab to help Firefox stay fast.

When you come back, your tab will reload just where you left off.

duplicate of /questions/1546750 thread

In this version, do I still have another account and password from other application that already saved before in the past version?

duplicate of /questions/1549163 thread as it has a reply.

Today as I got to work (Windows 11 machine), I had a suspicious Firefox.exe file on my Desktop, it was not a shortcut, but exe file. I did a little investigation and research, and I noticed some difference from Program Files exe file and Firefox.exe on my Desktop:

C:\Program Files\Mozilla Firefox\firefox.exe

Size: 695424 bytes SHA-256 hash: EEB242895F8ED48B43EAAA9ECA06C6DDE54425F8AE0E16200D2D46F839B9A540 File version: 145.0.0.327 Copyright: ©Firefox and Mozilla Developers Date modified: 16.11.2025 12:35 Original filename: firefox.exe Digital Signature: Mozilla Corporation

and Firefox.exe that appeared on Desktop

C:\Users\User\Desktop\Firefox.exe

Size: 389248 bytes SHA-256 hash: E8DA5735FE1B5E92BA3636B8D17B5BEC0EA521DB6A8B5A52177FF3E8B2F60710 File version: 145.0.0.327 Copyright: Licence: MPL 2 Date modified: 16.11.2025 12:35 Original filename: desktop-launcher.exe Digital Signature: Mozilla Corporation

I scanned both files in VirusTotal, and they both seems clean and legit

I uploaded both files to:

https://drive.google.com/file/d/1kALgQbfhIpHqs1pN6dmTdF71nm10LlD-/view?usp=sharing

Can somebody assure me that both files are OK, and can somebody explain to me why Firefox.exe appeared on my Desktop, and why is there difference between two files in size, Copyright info, and original filename ?

I am looking to find a way to change the time in which I receive updates from Mozilla. Getting an update interferes with the operation of my laptop and to top it off, I don't know that there is an update coming through so I waste so much time thinking I have a problem with my connection, my router, my settings, my laptop. Hugely inconvenient. Why can't I set the time I want updates to come through and not interfere with me while my laptop is in use. This is enough to make me want to drop Firefox and switch out.

duplicate of /questions/1476458 thread

This happened too much, like 6 times when using firefox in this month. I dont want to shut the program because I got unsaved notes in it. I was listening to music and it just began to play it non stop. and it dont respond.

please help, a million thanks!

I try to restart network or suspend the process nothing works. If I could make firefox reopen to it's original state+ cookies; no site reloaded and get back my incogico it would be much appreaciated.

I wanted to set keywords for search engines (in order to quickly change them for a single query). This cannot be done for search engines by default (why?), so I had to delete them and create a new one with the same link and my own keywords. But now I can't give them the same name back, firefox says that such a search engine already exists. In general, it doesn't matter to me which letter is there. The main purpose of my appeal is to draw attention to the fact that search engines cannot be edited by default, because it is quite inconvenient. Thanks for the answer (I apologize in advance if I made a grammatical mistake somewhere, I used a translator) My OS: Ubuntu 24.04 LTS; firefox version: 145.0.2 (64-bit)

How about fixing this bug that was put in the last update. I have tried all the suggested fixes and nothing works. I am switching to another browser because I cannot complete a simple login with your bugged software update. I am not using my phone to fix a software issue you have created...do the update or you will be losing more customers.

I'm trying to stop Firefox from restoring tabs after I restart my OS. So far, I've done the following:

• Disabled `Startup > Open Previous Windows and Tabs`
• Disabled all extensions
• Confirmed I do not have a `user.js` file
• Set `browser.sessionstore.resume_from_crash` to `false`
• Set `browser.sessionstore.restore_on_demand` to `false`
• Set `browser.sessionstore.resuming_after_os_restart` to `false` (It was already set this way.)
• Set `browser.sessionstore.max_resumed_crashes` to `0`
• Set `privacy.clearOnShutdown.openWindows` to `true`
• Set `browser.sessionstore.max_tabs_undo` to `0`
• Set `browser.sessionstore.max_windows_undo` to `0`

(I've since reverted the last two and the extension changes after they didn't work.)

So far, Firefox will not restore tabs on application restart (manually closing and relaunching) or on crashing (after sending SIGTERM/SIGKILL), but it still restores tabs after restarting the OS (if I allow the OS to kill it during shutdown). I've seen a couple suggestions to disable history completely, but I do occasionally refer to my browsing history, so I'd prefer a less-drastic approach. Ideally, I just want Firefox to treat the first launch after a shutdown as a normal launch and not apply any special behavior. Any help would be much appreciated!

System: Fedora 42 (Workstation Edition) Running Firefox 144.0.2 on Gnome 48.6-1.fc42

I noticed that Firefox updated today or recently. I am having a lot of trouble with the browser today. Many complex pages aren't loading and just have overlapping photo icons. I can't use certain pages where I enter and save data. When I try these pages on chrome they open without problem. Is this some firewall that is over the top or is it something happening only today? Because if Firefox is like this now, I'll have to stop using it.

Hi there,

I've recently made the move to Windows 11, and since then I've been having loads of issues with firefox hanging and crashing. I've been able to correct the issue for about a week at a time by clearing my startup cache, but I did so incorrectly recently and it corrupted my profile, resulting in the need to create a new default one.

I'm able to launch firefox okay now, but when I try to sync my bookmarks and settings, firefox freezes every time immediately upon login. Is there a way I can sync my settings without using the firefox UI in order to circumvent the crashing issues present in the UI?

For some reason all of a sudden my bookmarks don't show their identification icons that are associated with that web site. Those icons are to the immediate left of the site address. I used to use those colored icons as a quick reference to select the web site I wanted. Being I have MANY bookmarks, those icons to the left were a GREAT help to locating a specific bookmark.

   I could locate a bookmark by the web site icon that is shown to the left of the site address. Now that icon just shows a non colored ball with globe in it.
  Is there a way to show a earlier date of my bookmarks? Maybe that way I could see the old bookmark menu the way it used to be shown when I accessed my bookmark menu? 
   Can someone please help. Thank you.

I have been using Firefox for many years and never had issues. Two days ago, I turned on my HP with Windows 10 and I got a pop up message something about Error Platform 126.0 XUL Runner is not compatible. I could not access Firefox, Google, or the internet. I uninstalled Firefox and reinstalled, but after that, everything runs very slow. Each time I go into a website, it can take up to over a minute to pull up! I cannot even delete email from my Gmail! It's piling up. Downloading can take over an hour! I checked all the trouble shooting forums in Mozilla and tried just about everything. I went back into "About:profile"s and created a new profile. It it did not make any difference. I also did a Firefox refresh. Did not help any. I went back into the profile I had before the XUL error because my bookmarks were there. Still slow. I cleaned out the cache, in both Firefox and my Windows 10. made no difference. I only have three extensions in Firefox. I don't know what else I can do to fix this. Also, my drivers and other software are automatically updated by Windows. My HP is only 2 years old as well. Everything was fine in Firefox until that XUL error message popped up and I had to uninstall and reinstall Firefox. That is when everything became agonizingly slow!

Update: My computer is barely usable anymore because of the Firefox issue. Having to wait for a minute or more for everything I do on the internet? I know it cannot be my computer itself because it is not even two years old yet. I may have to dump Firefox if I cannot get this fixed. I have Norton 360 and it is not malware or a virus. Firefox messed something up.