Forum Discussion
Deep dive:Exchange Online PowerShell and MFA
Just published a new post about this topic:
https://ingogegenwarth.wordpress.com/2018/02/02/exo-ps-mfa/
I hope this helps.
Ingo, ping the community folks to give your MVP badge, or someone might take decide you are just spamming :)
Very detailed article as usual, and thanks for making the MS folks look into their own mess...