A Closer Look at the Lightning Calendar Add-On For Thunderbird

One of the main points of criticism in regards to the email client Thunderbird was the missing calendar. While it was possible to install an early version of Lightning in previous versions of the email program, it was not really comparable in functionality with the calendar in Outlook or Google Calendar.
With the release of Thunderbird 8 came the release of Lightning 1.0. We already mentioned that in the Thunderbird release review we posted yesterday.
Lightning in terms of compatibility has made a step backwards. The calendar only supports Thunderbird 8 and later versions, which can be a serious problem for users who do not just jet want to upgrade to the new version of the desktop email client.
Mozilla has this to say about Lightning:
Lightning 1.0 is the fully integrated calendar Add-on for Thunderbird that lets users organize their schedules and life’s important events as a natural part of their email experience. Lightning gives users the ability to manage multiple calendars, create daily to do lists, invite friends and colleagues to events and meetings, and subscribe to publicly available calendars. With over a million active users, Lightning 1.0 is the calendar solution that users rely on to help them manage their daily lives at work and at home.
When you look at the release notes of Lightning 1.0 you will notice that there are not really that many notable changes to report. Most of the changes are bugfixes that resolve issues of previous Lightning versions. Lightning 1.0 has received some cosmetic changes, most notable new user interface styles for all calendar views.
When you install Lightning in Thunderbird you will notice - after a restart - that it adds a column on the right side of the program. Here you see the current date and calendar week as well as events for today, tomorrow and "soon". Lightning adds the Events and Tasks menu to the top menubar.
An import option is available supporting iCalendar and Microsoft Outlook comma separated value files. It is furthermore still possible to synchronize Lightning with Google Calendar and other remote calendar locations (via New > Calendar > On the Network).
New Lightning users should take a look at the known issues highlighted on the Lightning 1.0 release notes page.
Are you using a calendar application? If so, which?
Update: Lightning has been updated many times since it was released as a stable extension. The most recent version of Lightning is 2.6.4 which is compatible with all recent versions of the Thunderbird email client as well as SeaMonkey.
If you are new to Lightning, you may want to browse the official help topics which include guides on how to get started and configuration.
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You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!