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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 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.
כל התגובות (8)
There are several possibilities; Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;
- Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
- Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
You can check for issues caused by a corrupted or incomplete Visual C++ installation that is missing runtime components (Redistributable Packages) required by Firefox, especially VCRUNTIME140_1.dll.
Install both 32-bit and 64-bit "Visual Studio 2015, 2017 and 2019" downloads, (x86: vc_redist.x86.exe and x64: vc_redist.x64.exe) from https://support.microsoft.com/help/2977003/the-latest-supported-visual-c-downloads
You may not need the latter (32-bit version) if you use 64-bit Firefox. You may have to reboot the computer. ++++++++++++++++++++++++++++++++++++++++++++++ In another thread, a user reported that a recent update of Malwarebytes Anti-Exploit (version 415) may be causing symptoms similar to the VC Runtime problem. If you have MBAE, it should have a setting to exempt Firefox. You could test whether that makes any difference.
By the way, if you are on Windows 10, did you install updates today? Another user mentioned KB5010342 as a potential culprit. However, we don't have much information about that yet, so I think it's premature to try to roll it back.
Aha. I do use Webroot so that's what causing it. That explains that then. I don't want to shut off my protection so I'll wait till either Mozilla or Webroot get it patched (hopefully soon).
Thank you everyone - I would have never digured that out on my own.
There is a mitigation for the conflict in Firefox 98, now in beta testing. If you wish, you can confirm by installing Firefox Developer Edition, which will sit alongside regular Firefox and use its own profile folder. https://www.mozilla.org/firefox/developer/
If all goes well with the patch, we can hope it will be added to a Firefox 97.0.1 update. For now, though, I don't have a way to make 64-bit Firefox 97 work with the combination of Webroot plus the recent Windows update.
People are working with Webroot to issue an update.
Until then, a user posted that another workaround would be to run Firefox 97 in backwards compatibility mode. I haven't tested this myself, but here is how you would set that up:
(1) Open the Properties dialog for your Firefox shortcut. Either:
- right-click a Desktop shortcut, then click Properties
- right-click a pinned Taskbar icon, then right-click the Firefox (or Mozilla Firefox) item, then click Properties
(2) Switch to the Compatibility tab
(3) Check the box for "Run this program in compatibility mode for"
(4) If the selector for that option is not set on Windows 8, switch it to Windows 8
As a result of this change, you may notice that some Windows 10-specific features and styling are disabled. However, I am not aware of any major changes. If you experiment with this, let us know your experience.