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Firefox won't start after it has been closed down. Why is this?

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JohnASimpson
JohnASimpson
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After I close Firefox I sometimes get the following message when I try to restart. 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." The Windows Task manager insists there is no Firefox process or application running. Why is this?

After I close Firefox I sometimes get the following message when I try to restart. ''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." The Windows Task manager insists there is no Firefox process or application running. Why is this?

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cor-el
cor-el
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See "Hang at exit":