Firefox not responding on launch how to#
Firefox not responding on launch software#
Firefox not responding on launch password#

If you click the Firefox icon but no Firefox window opens and no error message is shown, a simple first step is to restart your computer and then try again. 'XML Parsing Error: undefined entity Location', 'Secure Connection Failed … uses an invalid security certificate'), see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems. The user that was used to log in to Windows at startup is still the active one. The Firefox application is started using the administrator Windows account.

Firefox not responding on launch password#

Enter the password required to log in to this account. From the Username drop-down, select Administrator or another user that has administrator privileges.

Find the firefox.exe program file in the Firefox application folder on your system.

You can either reboot the computer or, if you have an administrator account, you can execute the program as an administrator. If you receive the above error when launching Firefox on a Windows system, you may be required by Firefox to log in as an administrator.

Firefox not responding on launch software#

If Firefox still does not start, see the Firefox will not start due to security software section below. If you see the message, 'XULRunner - Error: Platform version is not compatible with minVersion '' ('' depends on version number), after a software update, use another browser to download the Firefox installer from the Firefox download page, save it to the desktop or other location, delete the Firefox installation directory and then reinstall Firefox reinstall Firefox reinstall Firefox. 5) Complete clean re-install (including deleting the Mozilla Installation folder).

Firefox not responding on launch how to#

See How to install Firefox on Windows for details. 3) Starting Windows in Safe Mode, then starting Firefox 4) Starting Firefox in Safe Mode while Windows is in Safe Mode.

Use another browser to download the Firefox installer from the Firefox download page and install it.

Delete the Firefox installation directory, normally found in one of these locations by default:.

(This will not remove your passwords, bookmarks or other user data and settings which are stored in a separate profiles folder.) The solution is to remove the Firefox program and then reinstall Firefox. This error is caused by a problem with Firefox program files. See How to run Firefox when your profile is missing or inaccessible for solutions. See 'Firefox is already running but is not responding' error - How to fix for solutions.

If you get the ' Mozilla Crash Reporter' window when you start Firefox, see Troubleshoot Firefox crashes (closing or quitting unexpectedly) for solutions.įirefox is already running but is not responding Specific error messages Mozilla Crash Reporter

2.4 Firefox will not start because of missing libraries.

2.2 Firefox will not start after installing add-ons.

2.1 Firefox will not start due to security software.

1.6 There was an error launching the application.

1.4 Failed to read the configuration file.

1.3 Your Firefox profile cannot be loaded.

1.2 Firefox is already running but is not responding.