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Thunderbird 78.1 does not work with Mas OS 11.1. Big Sur

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I just installed Mac OS 11.1 and now Thunderbird 78.1 isn't working. Is there a fix available?

I just installed Mac OS 11.1 and now Thunderbird 78.1 isn't working. Is there a fix available?

Modified by Wayne Mery

All Replies (3)

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Hello there Dean Ford we have read your message We try to help you.


How does the software respond to your macOS?



Greetings Firefox volunteer.

Modified by День сумо

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It seems to be working now but for the first 8 hours nothing I tried (rebooting, reinstalling, etc) helped. But now it's working. (???) Thanks.

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Hello there Dean Ford. Thank you for using Thunderbird.




Greetings Firefox Volunteer.