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I often get this message. Firefox is already running but is not responding.To open a new window you must first close the excisting Firefox process or restart your system.Thankyou Colin.

  • 1 reply
  • 3 have this problem
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  • Last reply by John99

Harryman.63
Harryman.63
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So this message appears mainly if I were changing web sites.Can't carry on until I have cleared everything from screen,gone on to my Thunderbird e-mail then Firefox will load again.I can then just carry on till next time.

So this message appears mainly if I were changing web sites.Can't carry on until I have cleared everything from screen,gone on to my Thunderbird e-mail then Firefox will load again.I can then just carry on till next time.

All Replies (1)

John99
John99
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Please look at "Firefox is already running but is not responding" error - How to fix

The initial problem is solved by killing any process firefox.exe, ( & maybe also plugincontainer.exe) Make sure you always close firefox by using the option Firefox Button -> Exit

You may need to investigate further and clear some of the duplicated files that may exist.