This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

Have been using calendar for years, now no longer shows with email, why?

TomR1124
TomR1124
more options

Calendar has been a visible part of email screen. Today only email appears. No Task or event and no list of next 5 days events. I am not aware of doing anything to hide or remove the calendar. Showed this morning but not when I opened system this afternoon. I looked at calendar items but creating anew calendar requested action from left column on screen, only bookmark items listed.

TR 5/24/18

Calendar has been a visible part of email screen. Today only email appears. No Task or event and no list of next 5 days events. I am not aware of doing anything to hide or remove the calendar. Showed this morning but not when I opened system this afternoon. I looked at calendar items but creating anew calendar requested action from left column on screen, only bookmark items listed. TR 5/24/18

Modified by TomR1124

All Replies (3)

user01229325
user01229325
more options

Lightning is the Thunderbird calendar. It is an add on. Go to the add on tab and click extensions. Is Lightning there but disabled? Enable it. Is Lightning not listed? Type lightning in the search box and install it.

TomR1124
TomR1124 Question owner
more options

I attempted to follow you directions. Not sure I got where you directed me. Not sure I got to the screen for extensions. I got to Add on Manager, then clicked extensions. Lightning Calendar Tabs came up with Lightning Calendar tabs settings.all four areas are check as enabled. I clicked OK and Lightning Calendar Tabs 2.0 appeared. Automatic Updates was defaulted, I shifted to On. Lasted updated Nov. 23, 2017.

user01229325
user01229325
more options

Lightning not lightning calendar tabs. Lightning is the calendar and task manager.