This article is currently a work in progress
To learn more about modern authentication, visit:
In order for Office clients to use modern authentication flows, the Office 365 tenant needs to be configured support modern authentication flows. You can find more details here -
The Office 365 tenant/resource host (Exchange Online, SharePoint Online and Skype for Business Online) will need to be configured to accept a modern authentication connection. We recommend Exchange Online be enabled for modern authentication when enabling
modern authentication for Skype for Business.
Here is the per service state of modern authentication by default:
Because Skype for Business clients connect to both Skype for Business Online and Exchange Online, tenant level modern authentication settings should match for Exchange Online and Skype for Business Online.
This article explains how to enable your Skype for Business Online tenant to support modern authentication.
Set-CsOAuthConfiguration -ClientAdalAuthOverride Allowed
Via Exchange Online remote PowerShell: How to enable your tenant for modern authentication
Run the following command.
Set-CsOAuthConfiguration -ClientAdalAuthOverride NoOverride