Join us to show up for other Firefox users 🦊. Earn fun badges and Mozilla swag vouchers! Find out more: https://mzl.la/askafox150

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

Thunderbird has been upgraded to 60.2.1 but it does not display Tasks and Calendar. Please fix the problem.

This is the first time I have a problem with Thunderbird.

This is the first time I have a problem with Thunderbird.

Chosen solution

So the solution is:

remove the lightning add-on in Thunderbird; exit from Thunderbird; install xul-ext-lightning package with

sudo apt install xul-ext-lightning (it will pull more packages in).

restart Thunderbird.

Read this answer in context 👍 1

All Replies (1)

Chosen Solution

So the solution is:

remove the lightning add-on in Thunderbird; exit from Thunderbird; install xul-ext-lightning package with

sudo apt install xul-ext-lightning (it will pull more packages in).

restart Thunderbird.