Firefox instantly hangs at startup

When I try to open Firefox it flashes an error instantly "Screenshot attached (Error)" and the past in the background report.

Pop lasts for 1 or 2 frames so its went very quickly, try to click on safe mode or refresh does nothing.

I tried to uninstall and reinstall Firefox.

I tried to uninstall Firefox and ensuring that everything is removed, Run applications to delete all the files and all add-ins, cache cleaning and then restarted the computer and run again clean it before reinstalling. Still the same error.

Firefox worked very well for many years, I update it every time there is an update. He was working a little more than 2 hours. I closed it to work on something else, when I back to open again this starting happening in Firefox.

Other browsers work fine. IE Chrome and Edge everything works fine.

Could you please advice what I can try next. Thank you.

Oh, thanks for the recent report of incidents. It is a problem with the secure certificate.

I suggest renaming the cert8.db file in case it is damaged, although if you deleted all your Firefox data, this will probably not help.

This file is located in your current Firefox profile folder, you can find by following the steps in this article: profiles - where Firefox stores your bookmarks, passwords and other user data.

Firefox starts after that?

You can also try the following if you delete your Firefox program folder when reinstalling previously:

Clean reinstall it

We use this name, but it isn't about deleting your settings, this is to ensure that the program, files are clean (not incompatible, corrupt or exotic code files). As described below, this process does not disrupt your existing settings. Don't uninstall NOT Firefox, that does not need.

(A) download a fresh Installer for Firefox 42.0 https://www.mozilla.org/firefox/all/ in an ideal location. (Scroll down your preferred language).

(B) the release of Firefox (if any).

(C) simply rename the folder of the current programme, either:

(Windows 64-bit folder names)

C:\Program Files (x86)\Mozilla Firefox

TO

C:\Program Files (x86)\OldFirefox

(Windows 32-bit folder names)

C:\Program Files\Mozilla Firefox

TO

C:\Program Files\OldFirefox

(D) run the installer downloaded to (A). It should automatically connect to your existing settings.

Firefox works normally?

Note: Some plugins can only exist in this OldFirefox file. If it is missing something essential, present in these files:

  • \OldFirefox\Plugins
  • \OldFirefox\browser\plugins

Otherwise, there is no reason to keep the old folder except research/curiosity.

Tags: Firefox

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