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Says firefox is already open when i try to open it

  • 5 ردود
  • 5 have this problem
  • 3 views
  • آخر ردّ كتبه clenjamin

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Ive already tried reseting it and it didnt do anything. It says firefox is already open and i need to close it before i can open another but theres none open. Ive also tryed the task manager said no fire fox was open

I also uninstalled it and re installed it

Ive already tried reseting it and it didnt do anything. It says firefox is already open and i need to close it before i can open another but theres none open. Ive also tryed the task manager said no fire fox was open I also uninstalled it and re installed it

Modified by clenjamin

All Replies (5)

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Let's try the following:

  • Restart your Computer
  • Uninstall Firefox from your Control Panel (Make sure to leave your personal information)
  • Go to Computer, then C:/ then to Program Files (It may be called Program Files (x86).
  • Find the Mozilla Firefox folder, delete it (or rename it)
  • Open another browser Window, go to www.getfirefox.com.
  • Download and install Firefox

Does this fix your problem?

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i searched for firefox and couldnt find anything

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please help dont want to change from firefox

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update** i found the mozilla folder as you said i deleted it, reinstalled and it still doesnt work it says the same thing.

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Im also getting this error message when my computer starts up.


windows application error, the exception unknown software exception (0x40000015) occurred in the application at location 0x0049f9bd