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won't load, close previous, uninstalled, reinstalled, same message

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  • 1 has this problem
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Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window.

This message appears when I try to start THUNDERBIRD. I have switched off, uninstalled, reinstalled but still get the same message. What is the name of the process that must be closed and where do I find it to stop it please?

Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window. This message appears when I try to start THUNDERBIRD. I have switched off, uninstalled, reinstalled but still get the same message. What is the name of the process that must be closed and where do I find it to stop it please?

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