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

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

When opening Thunderbird, I lost my calendar and all events

  • 1 resposta
  • 1 has this problem
  • 129 views
  • Last reply by Matt
  • Arquivado

When launching Thunderbird, my calendar and all events is missing. Email is fine. Calendar, completely gone.

When launching Thunderbird, my calendar and all events is missing. Email is fine. Calendar, completely gone.

All Replies (1)

On the toolbar > Tools > add-ons and select the extensions entry.

Make sure lightning is active and installed ( that is the calendar)

Matt modificouno o