Firefox Community Forum

It's great that Firefox now has tab groups - but I'm finding two things unclear:

1. How do you pin tab groups?

- I can't seem to make them stay the same place (e.g. at the start of my open tabs). - They seem to randomly move around in the pile of tabs I have open, making them harder to find.

2. How do you prevent new tabs from automatically being added to the tab groups?

- It's annoying that new tabs seem to get thrown into your tab group even if they're not related (i.e. weren't a link clicked within the group).

I'd appreciate any tips on these two points!

After a recent update, firefox has sometimes started shifting my currently-active tab to the end of the list when I click on it. It's messing up my organization, especially when I click on something in a tab group, because when it gets moved to the end, it removes it from the tab group. Any idea how to disable this? I can't find a setting for it.

On some websites, when logging in, my browser will suggest emails and passwords to log in. How do I turn this off? It's really annoying. It does it in private browsing windows as well. I've already deleted all passwords and disabled the password manager in Firefox, but it still happens for some reason.

I use the middle button only for toggling auto-scrolling on and off, or at least that's what I want to do.

That works, unless I mistakenly (often) click the button while over a hyperlinked image or link. In that case, the link opens in a new tab which disrupts my workflow.

How can I set up the mouse in FireFox so that clicking the middle button will ONLY toggle scrolling on and off and never open a link that may happen to be under the cursor?

I've been looking for a solution for this online for ages, and hope there is a setting for this. It's a frustration many times daily.

Whenever I close Firefox and try to reopen it, it brings up a system error that says, "The code execution cannot proceed because C:\WINDOWS\system32\pmls64.dll was not found. Reinstalling the program may fix this problem." I've tried completely deleting Firefox and reinstalling and it opens a new tab, but when I close it i get the same error message.

I manually pinned some websites on the shortcut row. But when I visit other websites that aren't pinned on shortcuts, they automatically get added to shortcuts.I tried unchecking sponsored shortcuts and also turning off recent activity. But yet when I visit any website that isn't pinned, it automatically gets added to the shortcut.How can I set it up so that only the website I pinned on shortcuts remains and other websites don't automatically get added on shortcut?

sync from my other computer's Firefox doesn't seem to be picked up on the sync for the older computer. any help in transfer of data between the copies of Firefox would be helpful

Firefox keeps randomly crashing and won't open, sometimes I can get 10 minutes before it returns to crashing all over again. Doesn't even OPEN troubleshoot mode, it just auto crashes.

My drivers are up to date, my windows are up to date, Firefox is up to date, Internet Security software is up to date.

I need this running ASAP for work, each crash report has a different code too which hurts.

First crash happened in the afternoon, yesterday. bp-6580ff2f-d79c-4472-89f6-542c60250604 4/06/2025, 5:15 pm

The rest are all today. bp-79fddad8-e05d-4376-884f-f81670250604 5/06/2025, 2:05 am bp-d3e94b00-0c80-4db1-94e0-9c1410250604 5/06/2025, 2:05 am bp-9191a616-31cc-44e0-83a0-5e0d20250604 5/06/2025, 2:05 am bp-18adbdcb-ea8a-44cd-b4a0-18c4e0250604 5/06/2025, 2:05 am bp-f27c149e-2355-4632-8d0e-28fcc0250604 5/06/2025, 2:05 am bp-cfc523e7-c87f-42ac-bd2e-ddea90250604 5/06/2025, 2:05 am bp-bcee28d7-140f-4ad2-846c-308750250604 5/06/2025, 2:05 am bp-500792c2-0995-4a9e-8e87-600ad0250604 5/06/2025, 2:07 am

Firefox will not open on my MacBook Pro. Mac OS 15.5.

Terminal report: 2025-06-04 10:47:20.009 firefox[2076:19473] Server doesn't exist or doesn't provide correct selectors.

Behavior: Clicking Firefox to open results in a window asking for permission to install a new Helper tool. If I grant access I soon see a new window that says the Helper has been installed and I can go to my settings and manage it. Meanwhile the Firefox icon keeps jumping up and down and won't finish opening so I have had to force quit. If I do not grant access to the installation by clicking "cancel" I get the same result: Firefox dances and won't open. I have tried simple solutions like force quitting the dancing icon and restarting after getting the "installed" message. No difference. No difference also if I cancel the installation, force quit and restart.

Please help!

I have been using Firefox for the last 5 years, I have been content with their services and for that reason I keep using it. Lately I had computer issues so I had to reset my computer and start over this includes Firefox as well. Anyhow because of my lifestyle i do different things like school work, farming, and other stuff. Windows has a feature called "Desktops" this feature is very handy to me as it lets me organize my tabs and windows base on the topic like school or work, (To illustrate this I included a picture of how I have it organize.) well, sometimes my computer shuts down by accident or intentional. Regardless if it was shut down by accident or not, I would boot my computer up and lunch Firefox, and Firefox would open my tabs and windows in the Desktop that It was previously at. For example, I would have all of my school related tabs and windows in the School Desktop, and all of my Work related stuff in the work Desktop, after booting Firefox would automatically place my tabs windows in those compartments, well now Firefox doesn't do that anymore and it is frustrating because every time I boot my computer up after an update or a restart, when Firefox is lunch Firefox will place all of my tabs and windows in the first Desktop, and this is frustrating because every time that happens I have spend time on sorting my tabs out to the right compartment, and to be honest I'm getting sick and tired of doing it because i lose time. So to anyone who reads this, can you please help me figure out what is wrong, because if it is a setting then that's is understandable but if it is Firefox then it would break my heart because as an user and a fan It would break my heart to stop using Firefox as my primary app.

When I open a pdf file it is automatically saved to my desktop, which is my selected location. I have also checked the always ask where to save files. In settings I have indicated I want pdf files to be opened by Foxit Reader. Other files set to ask open or save.

I also have gone in into about:config and set browser.download.open_pdf_attachments_inline to true based on a previous reply in this forum about this issue.

What can I do to stop the PDF files from being automatically saved to my desktop?

Hey team at Firefox, I stream a lot of movies illegaly, animes and shows too on Firefox and one of the most common exploits used by bad people is spyware and injection of malware seems inevitable. even with all the amazing protection features offered by you guys and UBlock origin don't seem enough at all. using a VPN and a amazing browser suite can only go so far. i had the idea of sand-boxing on my PC but a pain to do it every single time and keep a track of everything i am doing. The idea here essentially is to somehow sandbox certain tabs or windows entirely and to be able to pick up where u left off. this paired with the Firefox advanced features and all the amazing extension still available here instead of chrome will make the experience even safer. Hopefully this is something you guys can actually do. More than that i hope this reaches the relevant people at the company not just drowned in a pool of support tickets. I expect no credits or anything like that. I just want to know if its possible and this reach the devs so maybe they make it happen. I do think this is a great idea and a possible feature on here. i can think of more ways to use sandboxing like that but this is just how i want to use it. Kind regards.

When I go to view an already open tab it will sometimes randomly move it to the very end of my tabs all the way to the right. I don't want it to move tabs without my intervention. Clicking on a tab should keep it in place.

This has been an issue for about 2 months now. I'm not sure what's causing it or even if it's entirely a Firefox issue as I have noticed something similar happen in another program with tabs that I use often. It still seems like a Firefox issue in that moving a tab all the way to the end is a very specific task that can't normally be done accidentally.

Is there a way to prevent this from happening or has anyone figured it out?

This person has the same issue: https://connect.mozilla.org/t5/discussions/stop-reordering-my-tabs/td-p/93219

Firefox keeps crashing and Hanging and I get the error message "gah your tab etc" I have followed the advice for fixing the problem but it keeps coming back Its really annoying when you are trying to do something I'm no computer whiz and I have looked at the crash reports, its just gobble gook to me, I need help to fix the problem.

I am using Latest version of Firefox (139.0.1 - 64 Bit). I have tried the "hardware acceleration" option on/off and Safe Mode as well. None of it can make Prime Video, Amazon Music or Spotify work! Surprisingly, the podcasts work in Amazon music but not the songs.

I am able to use these in Chrome.

Thanks in advance for the possible resolution steps!