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Thunderbird opens duplicate window on start

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  • 1 has this problem
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  • Last reply by Wayne Mery

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Latest Thunderbird version 38.4.0 (reinstall was not help) shows main window and after 2 seconds another one with the same content.

Latest Thunderbird version 38.4.0 (reinstall was not help) shows main window and after 2 seconds another one with the same content.

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Sound like an addon we know - minimizetottray.

Does problem go away if you start Thunderbird in safe mode?

https://support.mozilla.org/en-US/kb/safe-mode