Recent answers to Firefox won't open unless i create new profile.https://support.mozilla.org/en-US/questions/9419712012-11-15T05:48:58-08:00If you check the Windows task manager, is Firefox doing anything in the background, or just frozen?
2012-11-15T05:48:58-08:00jscher2000https://support.mozilla.org/en-US/questions/941971#answer-381526<p>If you check the Windows task manager, is Firefox doing anything in the background, or just frozen?
</p><p>You can use Ctrl+Shift+Esc to open the Task Manager, and check the Processes tab for firefox.exe. Sometimes Firefox will hang when shutting down, and then be prevented from restarting. Other times, it may hang starting up due to configuration issues. If you don't find firefox.exe at all, that could indicate a silent crash.
</p><p>Some possibly relevant articles depending on the situation:
</p>
<ul><li> <a href="/en-US/kb/firefox-hangs-or-not-responding" rel="nofollow">Firefox hangs or is not responding - How to fix</a>
</li><li> <a href="/en-US/kb/troubleshoot-firefox-crashes-closing-or-quitting" rel="nofollow">Troubleshoot Firefox crashes (closing or quitting unexpectedly)</a>
</li></ul>