Office 365 / Exchange Online – IMPORTANT – Connecting to your Exchange Online mailbox will require MAPI over HTTP
Starting October 31, 2017 (in about a year), accessing your Exchange Online mailbox with Outlook client on Windows will be made using MAPI over HTTP. This means that all client which do not support MAPI over HTTP (Outlook 2007 [by the way you should already have moved on as this is not supported anymore]) will […]

