This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Rohkem teavet

Teema arhiveeriti. Please ask a new question if you need help.

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

Dean Ford
Dean Ford
more options

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?

Muudetud Wayne Mery poolt

All Replies (3)

День сумо
День сумо
more options

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.

Muudetud День сумо poolt

Dean Ford
Dean Ford Küsimuse esitaja
more options

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.

День сумо
День сумо
more options

Hello there Dean Ford. Thank you for using Thunderbird.




Greetings Firefox Volunteer.