Feb 20 2017 08:44 PM
https://technet.microsoft.com/en-us/library/mt775114(v=exchg.160).aspx
Yesterday I found that now we can connect to Exchange Online through Powershell even with MFA enabled account. This is a preview feature. IMO, this is one of the long awaited feature.
Feb 20 2017 11:23 PM
Hi NarisimaPerumal,
Yes, now we are just waiting to be GA to finally the clients have MFA in all Global Admins, this is required for security.