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Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system.

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Thunderbird wont open/start and gives this message in a message window

Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system.

Any Help would be appreciated.

Thunderbird wont open/start and gives this message in a message window Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system. Any Help would be appreciated.

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