If you are looking to use Evolution with a company office365 subscription, then you will need to use the following URL with your ews configuration.

1. Make sure you have the ews plugin for evolution installed.
2. Use the URL https://outlook.office365.com/owa in the host URL for bootstrapping, this will switch to https://outlook.office365.com/EWS/Exchange.asmx after you click “Fetch URL”