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firefox wont open as it says its already running but processes are clear

  • 5 replies
  • 3 have this problem
  • 16 views
  • Last reply by FredMcD

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Error message : Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. the process list has no firefox in it i have uninstalled re installed rebooted and still this persists Any ideas ?

Error message : Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. the process list has no firefox in it i have uninstalled re installed rebooted and still this persists Any ideas ?

All Replies (5)

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after you click to close firefox i also get a message : Your Firefox profile cannot be loaded. It may be missing or inaccessible. I'm on windows 10 if that helps too

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If you're having trouble with your profile as well, check the instructions in http://kb.mozillazine.org/Profile_in_use regarding access rights and the lock file.

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Do you have the Firefox icon on your quick launch? Right click on it, and select Open New Window. Sometimes this works. If it opens, close it by Menu > File > Exit.


This is not a cure but will make it easier if Firefox locks up in Windows. https://support.mozilla.org/questions/997866 {web link}

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it just doesnt open says its already open i have deleted program all cookies histories etc re installed and it still says Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window ?

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Do the above, but choose New Tab