I recommend that you enabled for modern authentication both Exchange Online and Skype for Business, if you want to use MFA. Modern authentication brings Active Directory Authentication Library (ADAL)-based sign in to your Office 365 applications, and without this enabled, end users will have to use “App Passwords”, witch is a true nightmare for any user and it department.īy default Office 365 tenants (Exchange Online, SharePoint Online and Skype for Business Online) will need to be configured to accept a modern authentication connection. The key to a successful MFA deployment starts by enabling modern authentication. Therefore the requirement for multi-factor authentication is something that most customers wants to implement as part of their cloud strategy. But when customers are using cloud services like Office 365, OneDrive and SharePoint that boundary moves from a physical boundary to the user identity. Most customers today has a strategy about MFA when employees are trying to access corporate company data from outside the company perimeter. As a Cloud Consultant working with products that are part of the Office 365 and the Microsoft Enterprise Mobility +Security Suite (EMS), I often get a lot of questions about multi-factor authentication (MFA), and how to get started.

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