Exchange Data Provider for Lightning

"Requires additional items'

Asked by Leszek Koltunski on 2010-09-01

I have installed version 0.8 from official Mozilla repo ( and then I've tried 0.9 with the same effect ). Thunderbird 3.1.2 on Windows XP here.

The problem: extension does not seem to work and when I go to Thunderbird menu->Tools->Add Ons, I can see

Provider for Microsoft Exchange 0.9
Allows bidirectional access to Microsoft Exchange
Requires additional items

and the 'Options' and 'Enable' buttons are greyed out. I can only 'Uninstall' it.

What gives?

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Solved by:
Simon Schubert
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Simon Schubert (corecode) said : #1

Did you install lightning as well?

Of course not. What is it and how do I get it? When one goes to Mozilla's repo, it does not mention any 'Lightning' .

Best Simon Schubert (corecode) said : #3

Lightning is the calendar component for Thunderbird.

Thanks Simon Schubert, that solved my question.

It would be nice if you explicitly mentioned that first one has to install another extension called 'lightning' .
I for one cannot see that info neither in

nor in

Simon Schubert (corecode) said : #6

Simon Schubert suggests this article as an answer to your question:
FAQ #1281: “Requires additional items”.