Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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.

Learn More
This thread was archived. Please ask a new question if you need help.
Solved Archived

Unwanted TB flders cannot be removed

Thunderbird Settings
Matt replied 5 years ago
mozilla217
mozilla217

I'm running TB 78.13.0 on a macbook. For some reason system folders such calendar-data and cert8.db appear in the email account as sub-folders - see image 'Unwanted folders Screenshot 2021-08-22 at 23.06.54'. If I delete these sub-folders they are moved into the Trash (Deleted folder) but instantly reappear. Moreover the deleted items cannot be removed from the Trash - see image 'Deleted folders Screenshot 2021-08-22 at 23.09.31 '.

I'm running TB 78.13.0 on a macbook. For some reason system folders such calendar-data and cert8.db appear in the email account as sub-folders - see image 'Unwanted folders Screenshot 2021-08-22 at 23.06.54'. If I delete these sub-folders they are moved into the Trash (Deleted folder) but instantly reappear. Moreover the deleted items cannot be removed from the Trash - see image 'Deleted folders Screenshot 2021-08-22 at 23.09.31 '.
Attached screenshots

All Replies (1)

Matt
Matt
  • Top 25 Contributor

Chosen Solution

close Thunderbird and delete the foldertree.json file from the profile folder and restart.