Форум сообщества Firefox

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!

Full access to one of my favorite websites -- BillO'Reilly.com, which I visit daily -- has been compromised through Firefox. If I access it's home page, it briefly appears in color -- then quickly changes to black and white! This is the case in pages throughout the site. Only O'Reilly's "No Spin News" program comes in color but, only if you're a paid subscriber to the site. The site comes in perfectly on other browsers (e.g. Chrome and Edge) and I have informed the site's technical staff about the issue.

Please look into this.

--Thanks, Steve Saucedo

  Firefox User Since Its Beginning

I had an issue with the hidden task bar not showing up when I moved my cuser to the bottom of the screen, so I was "playing around" and messed it up. I created another profile, but lost all my bookmarks and so forth. I copied files from my old profile to the new profile, but now I can't get to michaels.com - it won't load. Also, I have my yahoo mail tab looks like it's loading, but I got in my email and when I went to blackforrest.com it does the same thing.

I still have the issue of my task bar not "unhidding" when I go to the bottom of the screen. I have to minimize my screens to see the task bar.

Can you help, please?

If I enter file:///d:/web/index.html in the search box then it returns the expected web page but if I edit it into a Firefox home page shortcut then I'm told a valid URL is required. A bit of research here makes me think I need to edit policies.json but I can't find that file in Windows 10, Firefox 139.0.1. I note that the posts giving the advice are six years old and Firefox has changed greatly since then. Please could someone tell me the current method to achieve what I want?

Jonathan

Secure Connection Failed

An error occurred during a connection to eazypay.icicibank.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

If I enter file:///d:/web/index.html in the search box then it returns the expected web page but if I edit it into a Firefox home page shortcut then I'm told a valid URL is required. A bit of research here makes me think I need to edit policies.json but I can't find that file in Windows 10, Firefox 139.0.1. I note that the posts giving the advice are six years old and Firefox has changed greatly since then. Please could someone tell me the current method to achieve what I want?

Jonathan

Hello, My Mozilla browser has been displaying new websites in black and white for two years or more (NYT, SMH, NZ Herald, Gdn - see screenshot attached). Substack, random theatre co, Airlines, conferences etc etc everything else appears in colour!

I am not great on tech so I have looked at Settings and asked google and got nowhere. Thanks people for any advice - It will be appreciated.

(PS seriously Mozilla help please do not offer those asking for help a manual troubleshooter link without stating it will wipe their help request when they use it. This is just mean of you).

Hi, Re Firefox browser how do you get back 2 windows with tabs that disappeared when restarting the PC. They are not in history anymore at all, they are gone. What opened up instead after the restart, was 2 lots of Windows & tabs that just disappeared in the same way, from 3 years ago, & they reappeared on the browsers. Can you tell me what is going on please & how to fix this problem in losing them in the first place? This problem has happened several times before & is very upsetting. Can you help in finding my recent loss of windows/tabs please? Regards Doug

I am getting problem to login https://investorkazi.com/wp-login.php after clearing my browsing data and history, its showing me (You have exceeded the maximum number of active login sessions allowed per user). But i am not Exceede, I just cleared my browsing data and history on my laptop, i request you to logout from all my previous visited website active accounts. so that i can login this website ( You have exceeded the maximum number of active login sessions allowed per user).

bold text It is not possible to watch videos in 1080p since the moment I installed the latest update. I have to reduce to 720 or 480 to get smooth motion. Running Windows 10. How can I fix this?