Firefox Support Forum

There's not really much skirting around it. Yesterday, I came across this sudden error with my Firefox browser on PC (see annexed image), which basically rendered me unable to open it for some reason. It did get fixed that same day somehow, though for a short while, as I was faced with the same error message again today and once again haven't been able to open my browser, much to my frustration.

I tried searching about it on the internet, but didn't find anything of help – most videos about it refer to a mistake on the Windows OS with the same code (0xc000185); asking around to people I knew didn't do much, either.

Today I tried a bunch of stuff to see if it resolved my problem in any way, such as: 1. Restarting my laptop (didn't work); 2. Installing both suggested and optional updates available to my Windows version (put me at ease a little, but still didn't work); 3. Searching for malware (antivirus didn't find anything, so I'm thankful this one didn't work); 4. Verifying system files with 'sfc /scannow' (all was good, so it didn't work);

I was also going to try doing a 'chkdsk /f /r', but I didn't have time to, as I had to leave for something. There are also other things such as creating another profile, which I'm considering; updating Firefox, which I can't do because I can't open the browser to check if there are any updates; and reinstalling Firefox, which I'm slightly afraid to do and will leave as a last resort because I don't want to risk accidentally doing it wrong and losing all my history, bookmarks, etc.

Any help would be incredibly welcomed. Thanks in advance.

P.S.: The text on the error message reads (translated from PT-BR): "The app couldn't be started correctly (0xc0000185). Press OK to close the app." Sorry if the photo isn't very good.

Looking for a fix on a right-click issue that I keep having...

When using Linux Mint (Cinnamon), the right-click context menu occasionally becomes misaligned with the cursor position. Attached image shows a right click on the text box in the right browser window triggering a popup in the left browser window.

This most frequently happens when:

• Multiple windows are open AND
• The window being right-clicked on is "snapped" into place (by dragging to the side of the screen)

Error seems to occur most frequently on windows snapped to the right-hand-side of the screen.

Context menu placement is offset by an arbitrary amount determined at time of window-snapping. E.g., moving the cursor down 1 inch in the example image below will move the menu down 1 inch as well. Un-snapping the window, and re-snapping can adjust menu-cursor-offset distance.

When I open a locally downloaded pdf in firefox, the background is displayed as what was previously displayed on that portion of the screen, and scrolling simply overlays moved text over what was previously displayed. Does not appear in screenshots. One of the images shows what the pdf looks like prior to scrolling, and one after.

If you experience horizontal lines appearing when scrolling after installing firefox possible fix is finding layers.acceleration.force-enabled and set to true after going to about:config in your address bar search for this and set it to true. My real question I ask myself is, why isn't this enabled by default when installing firefox? I swear I remember doing this last Win 11 install as well. My third time installing windows unfortunately, just had a nvme ssd drive fail on me. 😭😢 Ofc, it had to be my Gen 4, C: drive with my old User account on there as well. :// Lesson learned, always backup important data frequently as desired. :( Oh well, just lost all my saved games and few songs, no big deal I guess.

Firefox uses about half a gig on my disk, that's: '~/.mozilla' and '~/.cache/mozilla' can that be reduced? Either some setting that limits disk use or even a manual deletion of ancient stuff?

Firefox Desktop issue,

McAfee malware has entered the Firefox browser a couple of days ago claiming viruses have been detected & requires me to click on their popup to remove it. Additional warning follow and reoccur every couple of minutes. I don’t have McAfee Anti-virus software on my computer & have not installed any new software for some time. The anti-software I have works fine (Spybot & Microsoft Security Essentials) and detects no problems. The first application I initiate upon boot-up each morning is Firefox and that’s when the problem begins. It is somehow related to Firefox. I cannot find any processes in play.

I’m using Windows 7 Pro

Sincerely, [removed email from support forum]

I tried all six free malware scanning programs suggested but nothing found

After update 126 "open previous windows and tabs" no longer works. It is checked but open tabs are not reopened when firefox is restarted. Using macOS Ventura 13.6.7

firefox has fully stoped working for me, i cant open even one tab a message appears that says' guh your tab has crashed' i cant do absolutely anything, please i need help

I got this messages on the logs and sometimes the session freezes when I'm using Firefox: mai 24 20:12:16 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 50331 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:12:16 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 50253 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:12:34 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 52142 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:13:28 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 51884 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:14:07 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 52087 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:14:13 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 50755 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 mai 24 20:14:19 glados firefox.desktop[9642]: [Parent 9642, IPC I/O Parent] WARNING: process 50806 is a zombie: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:245 lines 8174-8233/8233 (END)

I am having problems playing a particularly demanding video from YouTube (https://youtu.be/-W_nFlIAWFM) which runs at 4K/30 fps. It is a video taken from a drone flying over the Matterhorn in Europe. Here is my configuration: 1. I have a 200Mb connection to the internet and bandwidth testing confirms that it runs at a consistent 195 - 202 Mb. 2. I am using Firefox 126.0 on a dual boot machine running Ubuntu 22.04 LTS and Windows 10 (both OSes show similar stuttering and pausing). 3. My hardware is a Gigabyte Aorus Z690i motherboard with 32 GB of RAM and an Intel i5-12600K processor and an NVidia GeFroce RTX 2060 Super graphics card. I have tried disabling "Use hardware acceleration" in Firefox and also disabling all add-ons and rebooting. This hasn't resolved the problem. When I watch the same video in Google Chrome, it seems to display a much slower frame rate than 30fps but doesn't stutter. I have concluded that this video must be a super demanding one to render. There are many picture elements changing constantly. But is there a way to watch this at 4K/30fps with it playing smoothly and at the correct frame rate?

Firefox was running in full screen. Without me doing anything it reduced it's size to about 1/4 screen. Everything I attempted to correct this has not worked . Any thoughts or suggestions on how to correct this is appreciated.

Hi, there - Over the last few months, I've noticed some things that make it impossible to get to websites. I keep getting "Secure Connection Failed," for example, with getting to Chewy.com. I just tried to sign into the ssa.gov website, but it comes back repeatedly as "403 forbidden." And another big one is trying to get to outlook.com. It never fully loads. I cannot get my email. I've been having to use Edge more and more, and I don't like that for privacy issues. Also, sometimes I cannot finish buying things on some websites without changing over to private browsing. Thanks.

I have used a free Hit Counter for many years that I got from https://www.freecounterstat.com/

I have 3 such counters and have stopped working in the latest version of Firefox on my desktop. They work with Firefox on my iPad and Android phone. They also work fine if I use the Edge Browser but I prefer using Firefox as I have for many years.

The embedded code is pretty simple, here it is for one of my counters... <a href="https://www.freecounterstat.com" title="visitor counter"></a> Can you help? Thanks, Bill T

Hello, so when I watch youtube on FF my cpu usage goes up alot and the fans go nuts. I have a very capable i5, rtx3070 machine and this issue started just a couple of days ago. I have not done any changes or updates which could trigger this problem. The problem starts mainly when I Watch in full screen mode or have multiple non-fullscreen vids active. All other apps show no signs of problem. I can watch the exact same video in Edge, no fans/high cpu, VLC works fine, Chrome is OK, it's only in FF that the problem occurs.

I have tried the following: 1.Reinstalling FF 2. Activating HW acceleration in FF and forcing it in Windows11 3. Theatre mode is off and all other YT settings are off. 4. Updated Nvidia and windows 5. FF is the latest version. 6. Disabled all my addons/plugins

No clue what can cause this..

Hi I had some tabs open in private browsing which have frozen. Each tab has history but won't let me go back or forward. I have tried closing the tabs and pressing undo as this sometimes works but it didn't help. I really don't want to lose the tab history as it is in private browsing so won't be saved in history. Does anyone know a way to restore the tabs?

Hi Support Team, Hope you are doing well. Do you have any issues with the service as I see from https://downdetector.pl/status/duckduckgo/ 144 was reported?

If you can just email me about reason if there was any malicious activities I happy to help.

Thanks RO

Had an update for Firefox happen last night and now the Duck Duck Go extension will not work. Just goes search not found?

Here is the error - There was an error displaying the search results. Please try again. When I turn off the extension Firefox runs fine.

I had turned off the extension first and turned back on same issue. Removed extension and reloaded same issue. Restarted router same issue. I have uninstalled Firefox and then reloaded same issue with Duck. Duck Duck Go works in my Edge browser