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closing and restarting firefox task manager reports firefox already running

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When I exit firefox and later try to restart it without rebooting, task manager says it is already running and I have to close it before restarting. Task manager is reporting that 99% of its time is spent running Firefox.

When I exit firefox and later try to restart it without rebooting, task manager says it is already running and I have to close it before restarting. Task manager is reporting that 99% of its time is spent running Firefox.

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See "Firefox is already running but is not responding" error - How to fix, in your case it appears that Firefox is not closing properly, so the Firefox hangs at exit article may be relevant.

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first start task manager ,then click on processes ,then click on processes 'firefox.exe*32',click on it ,thenclick on end process