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Firefox suddenly stopped working - Windows 10 PC

Hey folks, hopefully you can help with this mysterious issue! I've been running Firefox successfully on my Windows 10 PC for a long while now. Last night, for some reason… (read more)

Hey folks, hopefully you can help with this mysterious issue!

I've been running Firefox successfully on my Windows 10 PC for a long while now. Last night, for some reason it simply ceased to work. New windows and tabs would not load any content. I also couldn't access the Settings at all (clicking on Settings in the browser menu produces no results or feedback.)

Yesterday, I had Firefox open all day (I usually have my computer on all day), and it was working fine. Around 8 or 9pm, I first noticed that none of my open tabs were loading any content, and the tabs had the "loading" animation playing. New tabs would also not load any content. I assumed it was an internet issue as I did see my internet connection get disrupted once or twice. I did not see anything (apps, etc) on my PC updating.

This morning I found Firefox was still not loading anything, although my internet connection was fine. I tried opening Chrome, and it ran just fine. Everything else that it is internet or cloud based on my PC is running fine too. So it seems to be an issue just with Firefox.

I have listed my steps to troubleshoot below, but I want to note one weird thing I observed: Even when Firefox is closed, and Task Manager doesn't show any Firefox processes open, my PC seems to think Firefox is running. For ex. while trying to uninstall Firefox or delete certain files, I would get a warning to "close Firefox first" or "can't perform this action while app is running." After seeing these, I would again confirm that Firefox appears closed and Task Manager shows no related tasks.

My PC build: - Windows 10 Home, 64 bit - Version 20H2 at start of issue (updated to 21H2 during troubleshooting) - OS build: 19044.1526

Things I have tried for troubleshooting already: - I have WebRoot on my computer due to my job, and I asked our IT staff if they could see WebRoot blocking anything related to Firefox on their end. They said it was not. - Used "Firefox Refresh" - Uninstalled and reinstalled Firefox - Cleared app cache / app data - Updated Windows from 20H2 to 21H2


Note: This message was sent on a different computer & browser

Asked by Irene91 6 months ago

Answered by Amelia 6 months ago

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kb5010342 breaks Firefox 97.0 64-bit

After MickeySoft's Patch Tuesday today, I found that KB5010342 prevents Firefox from running. I'm running Win10 Pro with FF 97.0 64-bit and with this patch installed, FF… (read more)

After MickeySoft's Patch Tuesday today, I found that KB5010342 prevents Firefox from running. I'm running Win10 Pro with FF 97.0 64-bit and with this patch installed, FF opens with a blank screen and no DNS lookup or anything. Other browsers like Chrome or Edge load and work without issue. After manually uninstalling this patch, Firefox again works like it should.

Any ideas on how to fix this? Thanks.

Asked by gumby_dammit223 6 months ago

Answered by James 5 months ago

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Firefox won't load -- can't even reach home screen

So yesterday I got a new computer and downloaded Firefox to be my default browser. It worked fine the first few hours -- I was able to log into my account, set up my exte… (read more)

So yesterday I got a new computer and downloaded Firefox to be my default browser. It worked fine the first few hours -- I was able to log into my account, set up my extensions, and use the browser as intended. A few hours in, though, it completely crashed on me. I am unable to go to new websites, refresh a page, open bookmarks, log in to my Firefox account, or even open settings; the home screen also doesn't load when I open a new tab. Literally the only thing I can do is freeze the Bookmarks Toolbar and customize the Toolbar. I tried closing and reopening, refreshing/resetting the browser, restarting my computer, going into Troubleshoot mode, deleting and redownloading the application, but nothing is working. I have no trouble with Firefox on my previous computer or my phone, and Edge is working fine on this computer. I don't know what to do anymore. Any help would be much appreciated.

Asked by nenecessitepasreponse 6 months ago

Answered by nenecessitepasreponse 5 months ago

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Firefox won't load

The Firefox browser won't load unless I restart my laptop. It works for a few minutes then I am unable to navigate web pages. I am not getting any error messages. If I us… (read more)

The Firefox browser won't load unless I restart my laptop. It works for a few minutes then I am unable to navigate web pages. I am not getting any error messages. If I use Microsoft edge I don't have issues.

Asked by mikeld5742 6 months ago

Answered by James 5 months ago

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Wont load

Hello All, I'm having a issues with firefox on windows 10. I have been using it for years and this is the first time i have had this issues. Firefox will not load, if it … (read more)

Hello All, I'm having a issues with firefox on windows 10. I have been using it for years and this is the first time i have had this issues. Firefox will not load, if it dose it just a blank screen, I can not go out to any web page. I have tryed the work around, uninstall and reinstall noting is working. Has any see this before. My last step is looking like reinstalling windows be seeing how firefox is working on other PC i have in the house i do not wish to do this. Can any one please help me.

Thanks

Asked by gennisthegreat2 6 months ago

Answered by FredMcD 6 months ago

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Firefox only opens in background of PC (seen in task manager)

Firefox will only open in the background of my computer no matter how many times I try to open it. I have reinstalled Firefox and deleted and reinstalled its files many t… (read more)

Firefox will only open in the background of my computer no matter how many times I try to open it. I have reinstalled Firefox and deleted and reinstalled its files many times. When I try to open Firefox, my mouse shows that it loads and then it only opens in the background. I have tried safe mode and editing my profiles too.

Asked by Sammy Taffet 6 months ago

Answered by cor-el 6 months ago

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App will only open as a background instance whenever I try to run it.

So I got on my computer today, and I tried to open Firefox, but it wouldn't open, I would get a loading icon on my cursor and then nothing. So I restarted my computer, sa… (read more)

So I got on my computer today, and I tried to open Firefox, but it wouldn't open, I would get a loading icon on my cursor and then nothing. So I restarted my computer, same issue. Reinstalled Firefox, same issue. I then reinstalled after having deleted the %appdata% folder for Mozilla, but that also changed nothing. So I looked in Task Manager, and it would just open instances of Firefox as a background app no matter how many times I clicked. I've also tried using other browsers with no success. (Also, I'm runnning Windows 10, 64-Bit version, and had not installed any programs recently before Firefox stopped working.) I would greatly appreciate if I could get some assistance with this because I prefer Firefox much more than Microsoft Edge which is the only browser I'm able to use right now.

Asked by Soren 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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Update to Windows 11 broke Firefox?

Firefox has been awesome. But, my computer just updated to windows 11 and now it doesn't work. Sometimes I try to open the browser and nothing happens (but I somehow end … (read more)

Firefox has been awesome. But, my computer just updated to windows 11 and now it doesn't work. Sometimes I try to open the browser and nothing happens (but I somehow end up with something like 7 instances of it running in the background, according to task manager), sometimes I get it to open, but it won't load my homepage or anything, and sometimes it seems to work fine but only for a little while - then it just stops responding.

I have no idea why this is happening or how to fix it. I tried the browser reset, which helped for a little bit but then the problems came back. I think having a theme installed makes it worse, but now I can't even get settings to open so I can try turning it off to see if that helps.

Any ideas? Not being able to use the internet on my computer is a pretty big deal. I'd prefer to not switch browsers, but I don't know what other option I've got at the moment.

Thanks!

Asked by eosmialo 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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Firefox Stopped Working...

The Firefox on my PC abruptly stopped working for pretty much no discernable reason and I don't know what to do. I've tried restarting the PC, uninstalling and reinstalli… (read more)

The Firefox on my PC abruptly stopped working for pretty much no discernable reason and I don't know what to do. I've tried restarting the PC, uninstalling and reinstalling Firefox and nothing.

I dont get an error message. It just...doesn't start. If I reinstall it, I'm able to get the browser pulled up but then nothing on it works. It won't take me to any websites, it won't open the settings, it won't do anything. Refreshing the browser doesn't work either.

Failing that, I hopped on my phone and attempted to troubleshoot using information on this very site. I discovered that the problem might be stemming from corrupted profile data. I attempted to load the profile manager from Windows using command prompts...but that command doesn't do anything either.

I attempted to find the profile data on my computer and delete it...didn't work. I tried to reinstall Firefox to have it generate new browser data and that didn't work either. I dont know what to do and I dont know I'm supposed to fix this.

Please help, thank you in advance.

Asked by timothy.wolfe17 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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My laptop took an update on 2/8/22 and my Firefox stopped working.

My laptop took an update on 2/8/22 and my Firefox stopped working. The toolbars showed up, but nothing in the main window and most sites wouldn't open. I uninstalled an… (read more)

My laptop took an update on 2/8/22 and my Firefox stopped working. The toolbars showed up, but nothing in the main window and most sites wouldn't open. I uninstalled and reinstalled. It would work correctly for a couple of sites, but would just stop working. Only the toolbars (bookmarks and search) were on the screen. I removed the app data for Mozilla and uninstalled and re-installed again. It again worked normally, but only for a few minutes. Just toolbars and a white main window. My laptop was running Windows 10 when this happened. I went ahead and installed Windows 11 and did another re-install. Same thing. It worked for a short time and then quit. It doesn't seem to matter if I sign in and sync or not. I hope there's a fix for this. I love my Firefox! I'm using a different computer to send this. It is a Windows 10 machine that has the same update, and Firefox is working fine on this machine.

Asked by larrysportsman 6 months ago

Answered by James 5 months ago

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Firefox won't load webpages or settings

As of yesterday, Firefox won't load any webpages or firefox pages (e.g. settings, config, etc.). I've tried refreshing the install, uninstall/reinstall, and updating my M… (read more)

As of yesterday, Firefox won't load any webpages or firefox pages (e.g. settings, config, etc.). I've tried refreshing the install, uninstall/reinstall, and updating my Microsoft visual c++ redistributables and this problem persists. By "not loading webpages," I mean that it doesn't even show that it's directing to any webpages when I attempt to route to them. Any advice?

Asked by tomkalustian 6 months ago

Answered by cor-el 6 months ago

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new tabs are blank. can't open websites.

I've done everything I can think of. I've ended the task, restarted my pc, uninstalled, reinstalled. Nothing has helped. It's a miracle I can still launch the file, it ma… (read more)

I've done everything I can think of. I've ended the task, restarted my pc, uninstalled, reinstalled. Nothing has helped. It's a miracle I can still launch the file, it maybe starts once every 7 tries. I have no idea what happened or what I'm doing wrong, but its been like 2 hours and I'm still beyond lost.

Asked by saucedochristian86 6 months ago

Answered by cor-el 6 months ago

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Firefox 96 not loading pages, or even home page

Submitting using Chrome, which may have to become my default browser. Firefox 96.0. Windows 11 Pro Version 10.0.22000 Build 22000 Since installing FF 96, the program has … (read more)

Submitting using Chrome, which may have to become my default browser.

Firefox 96.0. Windows 11 Pro Version 10.0.22000 Build 22000

Since installing FF 96, the program has stopped loading pages. Will not even load home page. Starting in troubleshooting mode sometimes works, but sometimes does not.

No extensions are installed.` I have tried Refreshing. I have uninstalled and reinstalled. Neither helps. Multiple instances of FF are started with every launch, even when the launch results in a blank page.

Any advice would be helpful.

Thank you,

Steven Sacks

Asked by steven.sacks 6 months ago

Answered by steven.sacks 5 months ago

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Firefox won't open

Last night Firefox was running fine. I closed everything and left for a couple of hours. When I came back and opened Firefox everything was blank. There was a blank open … (read more)

Last night Firefox was running fine. I closed everything and left for a couple of hours. When I came back and opened Firefox everything was blank. There was a blank open tab, no response to any input in the address bar, nothing. So, I closed the window and tried again - this time it didn't even open. However, Task Manager showed Firefox running with 6-7 entries, all of which I used "End Task" on. I rebooted the computer and nothing had changed. It wouldn't open but it showed up a few times in Task Manager. I tried a Refresh - no change. I tried reinstalling - no change. I uninstalled and tried reinstalling - no change.

Finally, in desperation, I uninstalled, used "RegEdit" and deleted every entry I could that had "Firefox" in it. Then I reinstalled fresh - Firefix Installer didn't know it had ever been on my computer. Same result.

Honestly, I'm completely out of ideas. I can't try anything in Firefox because it won't open and I've deleted all the files and reinstalled and still no joy. Obviously, there is some file it's trying to use that is corrupted or something that isn't just a part of Firefox.

Any suggestions???

Asked by CoolNQuiet 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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Firefox Browser is not working, but I know internet is connected because other browsers are working (Edge and Chrome).

I opened Firefox today like I do every day and every tab I open gives me nothing. I thought the internet might be down, but after talking with co-workers, they have inte… (read more)

I opened Firefox today like I do every day and every tab I open gives me nothing. I thought the internet might be down, but after talking with co-workers, they have internet. I opened Chrome and Edge, and can connect to websites with no problems. I can't do anything on Firefox right now. I couldn't even connect with support through Firefox. I restarted my computer twice hoping that would be a good starting point, but no change in Firefox.

Asked by akdbach 6 months ago

Answered by TyDraniu 6 months ago

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Browser on Laptop suddenly stop displaying under search bar

My firefox on my laptop was working just fine until it stopped displaying anything under the search bar. I tried reloading, End Tasking the browser, Refreshing the Instal… (read more)

My firefox on my laptop was working just fine until it stopped displaying anything under the search bar. I tried reloading, End Tasking the browser, Refreshing the Install, Uninstall re-install, reboot computer and nothing is letting my laptop firefox display.

it wont even let me access settings or other menu options. It sometimes books up troubleshoot mode but that also has the same issues.

laptop is windows 10 lenovo. firefox is 97.0 64bit version. was working 2 hours ago.....

Asked by smuwen 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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Unable to load any site all or open firefox settings

So I have no idea what happened besides a windows update since the last time I used the browser. I had 3 tabs open when I left yesterday for work and when I came back non… (read more)

So I have no idea what happened besides a windows update since the last time I used the browser. I had 3 tabs open when I left yesterday for work and when I came back none of the 3 were loading just white screens and the loading icon next to the website just constantly spins I left it loading for 2 minutes before giving up.

I decided to try clearing out the cache, cookies, history, and basically all the options but passwords. Then I went ahead and tried again still no improvement. If I try opening a new tab and closing the others the same thing no difference.

I then noticed a windows update was going so I let it finish then restarted the computer and when it was ready checked firefox again and still nothing. So now I'm using Edge to type this out and am having no issue getting to any site that I was trying earlier.

Is there anything else I can do? Or is it like I gotta wait for a firefox update to come out?

Asked by gamefrek184 6 months ago

Answered by James 5 months ago

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Firefox Unable to load pages, or show any response at all

Well firefox was fine yesterday, today i open my computer up and it will not load anything. No home screen, type something in it doesnt try to load. I cannot open setting… (read more)

Well firefox was fine yesterday, today i open my computer up and it will not load anything. No home screen, type something in it doesnt try to load. I cannot open settings, i can click it, but it does nothing (the hamburger drop down works)

I have: Checked firewall Reinstalled firefox 3 times, to default settings x2 Restarted my computer x2 Shut down my computer Reinstalled microsoft visual c++ 2015-2022 Updated windows Shut down firefox many times within task manager Refreshed firefox Clear startup cache Safe mode (forefox) Checked antivirus (Not in order)

Edge works fine, but firefox is goofy.

Pc information: Amd ryzen 5 3600 6-core 16.0gb ram 64bit Windows 10 home Version 21H2 Osbuild: 19043.1526 Ethernet connection (also tried wireless, same results) 1tb free space

Firefox information: 97.0

The picture is about as much as it’ll do, sorry for the photo of screen, i am typing this on mobile

Asked by toddo212213 6 months ago

Answered by jscher2000 - Support Volunteer 6 months ago

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Browser opens, but no pages load and the button to log into my account does not work

I could not find the same problem, or any solution, when I searched the knowledge base. i have uninstalled and reinstalled Firefox twice. The problem started after a Fi… (read more)

I could not find the same problem, or any solution, when I searched the knowledge base. i have uninstalled and reinstalled Firefox twice. The problem started after a Firefox update on 2-12-22

Asked by dianne.dichter 6 months ago

Answered by James 5 months ago