How to block non-modern authentication to Office 365 services. (Manual)

With Azure Conditional access you get more control over your data, get better security and visibility! To use this feature you will need to buy and assign Azure AD Premium or EM+S E3/E5 licenses to your users.

This manual can be used to enforce the use of the Outlook app on IOS and Android devices by blocking all apps that do not support Modern Authentication like iOS mail and Google mail client.

Step 1: In the Azure Portal go to Conditional Access. On the first page that you get create a New policy

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