We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

What happened to my existing calendar when the Thunderbird update was automatically installed??

more options

Thunderbird automatically updated and when it did it wiped out my calendar. I don't want to install a new calendar, I need my existing calendar. What happened? How do I get my existing calendar back?

Thunderbird automatically updated and when it did it wiped out my calendar. I don't want to install a new calendar, I need my existing calendar. What happened? How do I get my existing calendar back?

All Replies (1)

more options

Sounds like you did not upgrade Lighting when Thunderbird upgraded. Go to the Add on tab and upgrade lightning.

FYI The program files in Thunderbird are separate from your data. Reinstalling does not lose your eata.

That being said, As With All computers backups are never a bad idea.