Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Lightning has disappeared. It appears as an add on but it's not working.

karenlevison
karenlevison
more options

Lightning calendar and tasks column has disappeared. It appears as an add on. But the column does not show up. Also does not show up in preferences anymore. I'm using a mac, el capitan. Thunderbird version 38.7.2. Lightning version 4.0.7.2.

Lightning calendar and tasks column has disappeared. It appears as an add on. But the column does not show up. Also does not show up in preferences anymore. I'm using a mac, el capitan. Thunderbird version 38.7.2. Lightning version 4.0.7.2.

All Replies (1)

amanchesterman
amanchesterman
more options

Have you tried removing Lightning altogether and reinstalling it? (Not reinstalling Thunderbird, just the add-on.) I suggest remove > shut down and reboot computer > reinstall, in order to refresh the settings.