Firefox suddenly won't open, have run virus scan, reinstalled, and tried to run firefox.exe-p, none have worked and firefox.exe-p won't open either. Win 7

Question

At the top of the Firefox window, click on the Firefox button (File menu in Windows XP) and then click ExitOn the menu bar, click on the Firefox menu and select Quit FirefoxAt the top of the Firefox window, click on the File menu and select QuitAt the top of the Firefox window, click on the File menu and select ExitOn the menu bar, click on the Firefox menu and select Quit FirefoxAt the top of the Firefox window, click on the File menu and select Quit.
2. Press + R (click the Windows Start button and select Run... on Windows XP).
3. In the Run dialog box, type in:
firefox.exe -p
4. Click OK.
Acts the same as trying to open FireFox. Also when reinstalling it said FF was open. The only way to close it was to restart the computer. However when Shut Down button is pushed, FF is not listed as a program that is open.

Answer 1

Hi geneo3711, <br/> sorry you are having problems.
There are many possible reasons for problems lets look first at the ones I consider most likely:
In ordinary circumstances Firefox only runs one instance using one profile. If you have Firefox not shutting down properly that may prevent you from starting Fifrefox until you have found and killed the process. (Also look for plugincontainer which may also exist).
If you are certain Firefox is not already running then the problem is often that a Firewall or security related program is blocking Firefox. This is especially likely if you have installed new security software ,a new version of Firefox, or have tried to restore the computer.
See also
* [[Configure firewalls so that Firefox can access the Internet]]
*[["Firefox is already running but is not responding" error message - How to fix it]]
*[[Firefox won't start - find solutions]]
*[[Troubleshoot Firefox issues using Safe Mode]]
** much more detail including command line details <br/> http://kb.mozillazine.org/Safe_Mode <br/> http://kb.mozillazine.org/Command_line_arguments
Note on the command line options you may need to
*enclose most of the line within quotes
* include a space before the -p or -safe-mode