Install Thunderbird.
Install the Lightning add-on. You may also need to run sudo apt install xul-ext-lightning
. Install the Exchange Calendar add-on.
The exchange server URL is: https://outlook.office365.com/EWS/Exchange.asmx
Step-by-step guide
- Add new account
- In your address book select Add Exchange contact folder
Add the IT calendar
Here's the Server URL for copy and paste: https://outlook.office365.com/EWS/Exchange.asmx