My organization has recently started using Office365. I hooked up to it for email, using IMAP and SMTP, no problem (except that it's slow). Now I want to have my Lightning calendar linked to it as well, i.e. to have automated synching both ways: I want to see in Lightning whatever changes are made via Office365, and have Lightning update the Office365 calendar whenever I make any changes. How can this be arranged?


  • There seems to be a tutorial about doing part of what I want here, but it's out of date and doesn't work (and it isn't a full solution even if it did work).
  • Just to be clear, you want your mozilla calendar to sync your office365 calendar? One way or both ways? – Raystafarian Feb 26 '14 at 15:44
  • @Raystafarian: both ways. – einpoklum Feb 26 '14 at 15:46
  • You can get read-only view of the o365 calendar using lightning and ics. In your o365 calendar settings, look under Publish Calendar and you can get the ics link to enter in Lightning. However, I found this to be read-only and can't figure out how to make it editable. – bgmCoder Mar 9 '16 at 21:30
  • @einpoklum Did you ever solve this? – bgmCoder Mar 9 '16 at 21:30
  • @bgmCoder: Nope. IT were not keen on helping me pursue this, I was busy with real work, and eventually I left the company. I'd still upvote good answers of course... – einpoklum Mar 9 '16 at 21:32

Yes, you CAN link the Office365 Calendars to your Thunderbird and it is possible to both read and write to/from the calendar.

  1. First, install the Lightning Addon in Thunderbird
  2. Next install the ExchangeServer Addon in Thunderbird
  3. Now refer to this thread for all of the settings2.

I've done this and it works.

It even links your addressbooks.

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