Diễn đàn hỗ trợ Firefox

When: Immediately when i click the icon to open it. I never get a Firefox window at all, only the Crash Reporter. What I've tried: Uninstall Firefox; delete Mozilla folders from all 3 subfolders of C:\Users\[my username]\AppData; reinstall Firefox I also get this same result when trying the command firefox.exe -safe-mode or the command firefox.exe -p What I'm running: Windows 7 Enterprise, SP1, 64-bit Thanks in advance for any help you can give me!

A couple of days ago Firefox stopped working on my PC. Nothing had been changed. When it opens, it doesn't load, the cursor stays on the thinking circle whenever I move it over the page. I can't open the options menu, can't load a specific page if I type the address in, Bookmark toolbar is gone and when I retrieve it, my data is gone. I can't exit using the X in the corner, I have to go into the menu and use the "Exit Firefox" icon.

I have deleted and reinstalled approx 4 times. I have researched and researched, tried all the suggestions I have found on different websites and forums (Microsoft Edge and IE still work). A couple of things worked, but then I couldn't get Firefox to load any pages as they were ALL untrustworthy, so I imported my Anti-virus Software certificate, that fixed that problem but as soon as I exited and reloaded Firefox I was back to the beginning with nothing loading.

I'm usually pretty self sufficient at finding a solution without annoying anyone with questions, but after a few days of research and testing, I'm not finding anything that works and am at a complete loss.

Firefox suddenly stopped working today. When I open it, it tells me that it's already open (which it isn't) and that it can't find or load my profile. If I go directly to profiles and create a new one, I can open it, but all my bookmarks are gone. And then if I close and try to reopen it, the same thing happens--I can't open it and get the same error message.

One thing I figured out is that the profile can’t be read only, and I discovered that mine was (why I don't know), but when I try to uncheck read only, it instantly reverts back to read only, which is weird.

I’ve tried reinstalling Firefox several times, but it’s always the same, even with a brand-new installation, I can’t open it and get the same error message. What can I do if reinstalling doesn’t even work?

The title is pretty much self explanatory. Whenever I reboot my computer (Ubuntu 16.04), firefox loses ALL of its data. Any persistent cookies are removed, any customizations I make to the title bar are removed, my extensions are gone, and I have to sign into sync again. It's like a completely fresh installation.

Thanks for your help!

In general, Firefox was running very poorly, freezing up at times while loading sites. I once ran RogueKiller and it detected a rootkit affecting Firefox. Following this I decided to reset Firefox. I was also prompted to update Firefox to the latest version, which I also did. After this, Firefox does not open a window upon starting the program. It will show that it is opening on the task bar (I have Windows 7) and then after about 15 seconds the icon appears as if it is not open. Upon checking in Windows Task Manager, it shows that FF is running, albeit in the background. I have tried various anti-virus/malware scanners (Spybot, AVG, Sophos Virus Removal Tool, Malwarebytes, SuperAntiSpyware) and other scanners (TDSS Killer, CCleaner, AdWCleaner) but nothing malicious is detected (even in safe mode). I suspect some kind of deeper infection which is evading all these attempts. FYI Internet Explorer is also affected by the same problem. Thank you so much for any kind of help.

I have updated to Mozilla Firefox 47.0.1 (x86 en-US), and when I click on the FF icon, it starts to open then crashes without any errors displayed. I uninstalled ff, restarted PC, re-installed ff (3 times) Firefox just crashes. I opened up the latest text file in Appdata/Mozilla/Roaming and has only this data: 1468707761. I have raised this report via Chrome.

My PC is WIN7 upgraded to WIN10

Frequently when I re-start Firefox (it seems to crash about once a day), the firefox exe process hangs with NO I/O. Firerfox does not even get to the point of asking me if I really want to start in safe mode. I tried getting a dump via the Task Manager, but taskmgr tells me "permission denied". Attached is a screen capture of the latest occurrence. This is the latest FF 46.0.1 on Windows 7 Professional 32-bit.

--Barry Finkel

This just started yesterday. I have flash player plugin version 20.0.0.306 installed. When I set it to "Never Activate" in Tool\addons my homepage loads fine when I open Firefox. When i have it set to "Ask to activate" or "Always activate" my homepage will not load and i get a blank New Page. I reloaded firefox from scratch and reinstalled the flash player from the adobe update website. Kinda weird but I am wondering if this has been addressed or if anyone else it seeing this. i am running 64 bit version of FF on Windows 7 Pro. FF version is 44.0. Thank you !

The page isn't redirecting properly

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

   This problem can sometimes be caused by disabling or refusing to accept cookies.

Can't load Firefox!!!

Windows 7, HP Pavilion (originally Vista) PC, I have been using Firefox for a long time. Suddenly is produces 20 windows when i open the first one. Happened immediately after I upgraded my Maxthon Browser version. Coincidence ?

Two days ago firefox stopped working for me. When I click on the the icon nothing happens, the only way to get it to launch is to run the installer. I've tried all the institutions on the this site to fix the issue and nothing works. I've tired to completely remove everything related to firefox then install it, this doesn't work. My guess there is a corrupt file somewhere that I need to remove but I've tired every where I can think of.

When I start Firefox, the window opens up and "connecting" appears top left of screen, as normal... but it won't connect. It will not connect to homepage, or any other bookmarks, or clicking on a link in email. I have uninstalled and reinstalled (twice), but still have the problem. I am having trouble uploading screenshots. Thanks.

Hi, all of a sudden my FF crashed and won't open. I keep getting the crash reporter. I uninstalled and downloaded a new copy - same problem. It won't even create a troubleshooter file.

I have Panda antivirus software (free) and that just stopped working too. FF fix, or is this maybe a virus?

I have the most up todate version of firefox, but when i open a new session of firefox, i get 2 tabs. 1 is my homepage and the other page is my preferences.

I had googeled this and also looked through the settings for firefox, but i cannot figure out how to rememdy it.

When opening Firefox it takes 3-4 minutes to open a browsing window. In order to start browsing immediately, I need to open a New Private Window. While browsing in the private window, 3-4 minutes later the homepage browsing window opens. I am using Firefox 43.0.3.

I am using Firefox 43.0.2 (43.0.1 would always crash few seconds after start) on Windows Vista. I have tried uninstalling Firefox and making clean install. When I try to visit any URL (like www.google.com or about:healthreport) nothing will happen, no error message, no loading, just a very short loading icon hints that Firefox have tried something. Only URL like about:config and about:license seams to work.

Crashes a few seconds after opening. Displays "plugin-container.exe" at times. Have refreshed Firefox, still crashes. Uninstalled Firefox then reloaded, still crashes. Was working before yesterday. It has run long enough to restart in safe mode, then crashes. Have tried starting with add on disabled, still crashes.

I'm running OSX and every time I open Firefox, it freezes up. I can't type in the URL area, can't click on bookmarks, and can't select the profile folder. It's completely stuck with no functionality. I tried to uninstall and reinstall to no avail. I tried using Safari and it works fine but I want my Firefox back!

Thank you for your time and consideration :)

ALex