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Thunderbird 78.12.0 (64-bit) keeps crashing on Mac OS Big Sur 11.4 up to date.

  • 3 replies
  • 1 has this problem
  • Last reply by sfhowes

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Thunderbird keeps crashing several times a day. Restarted Thunderbird in save mode, but it still keeps crashing. Can provide Troubleshooting details if I could find a safe email account. Need it badly as I manage several email accounts.

Looking forward to response as soon as possible.

Kind regards. - Einar

All Replies (3)

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If you can open TB long enough to access Help/Troubleshooting, Crash Reports, post the last few IDs (e.g. bp-.....). If not, look in this folder:

C:\Users\username\AppData\Roaming\Thunderbird\Crash Reports\submitted (Windows)

~/Library/Thunderbird/Crash Reports/submitted (OS X)

Try running OS X in safe mode.


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I can. When I opening Troubleshooting Information and select send via email, I need the email address to send to. If I knew the email address I can send full report right away.

Kind regars



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Just post the ID here, e.g. bp-d290881b-263c-49b1-9613-b5....., and we can view the report at


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