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Firefox does not always stop when pushing Alt+F4

  • 3 replies
  • 10 have this problem
  • 38 views
  • Last reply by philipp

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When I push Alt and F4, it often occurs that the window closes but the process does not stop. After I closed Firefox and wanted to start it again, it opens only every second or third time without error messages. When it does not open properly, it shows following error message, "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." When I have a look at the task manager, it shows that the process firefox.exe works, but doesn't show any activity (FYI, the memory usage is normal). The process is shown there as a background process (FYI, a Win 8 feature, and background processes are only visible in the detail view of task manager). When I stop the task, Firefox opens regularly. So, the problem is that when Firefox should be closed as the windows get closed, the process doesn't stop. That problem happened quite rarely with the previous version of Firefox, with Firefox 29, it transpires as often as described above.

When I push Alt and F4, it often occurs that the window closes but the process does not stop. After I closed Firefox and wanted to start it again, it opens only every second or third time without error messages. When it does not open properly, it shows following error message, "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." When I have a look at the task manager, it shows that the process firefox.exe works, but doesn't show any activity (FYI, the memory usage is normal). The process is shown there as a background process (FYI, a Win 8 feature, and background processes are only visible in the detail view of task manager). When I stop the task, Firefox opens regularly. So, the problem is that when Firefox should be closed as the windows get closed, the process doesn't stop. That problem happened quite rarely with the previous version of Firefox, with Firefox 29, it transpires as often as described above.

Chosen solution

hello Haris Trgo, unfortunately this is currently a bug in the current firefox version when you have set your history to be cleared at firefox shutdown - that is investigated and in the process of getting fixed by mozilla's developers with a high priority.

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Chosen Solution

hello Haris Trgo, unfortunately this is currently a bug in the current firefox version when you have set your history to be cleared at firefox shutdown - that is investigated and in the process of getting fixed by mozilla's developers with a high priority.

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Hi Philipp, may you please give me the URL of the thread of the bug as I'd like to stay tuned to that problem?

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of course, this is the related bug report at bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1005487 and the underlying technical work that has to be done for the bug to get resolved is tracked at https://bugzilla.mozilla.org/show_bug.cgi?id=965309.