Migrating users to Azure AD to enable authentication with Yammer

Yammer Enterprise users require an Azure Active Directory identity to log into a Yammer network. By default, if you have synchronized your on-premises Active Directory with Azure AD, you don't have to do anything to enable this. If you are using a standalone Yammer subscription, your users will be required to have an Azure Active Directory identity (either self-service signup or administrator-created).

Self-service signup

If you do not currently have Azure Active Directory configured for users, you will need to configure it through the Microsoft Online Services Module.

To obtain the Microsoft Online Services PowerShell, launch an elevated PowerShell prompt...