We have an existing subscription that we'd like to give a user access to with their existing Microsoft Account. When we go into Azure subscription's access control and add the user, the only option we see "Azure AD user, group, or application" which creates a Azure AD user. We're wanting to add a Microsoft Account. We have an existing user that is added like this already, and they can switch between subscriptions easily in the top right Azure menu. We just can't figure out how to do it again.
Here is what it looks like with a MS Account added…
VS a AD user.
Best Answer
You need to add Microsoft Accounts as guest users, click on the "Add Guest User" button in the Azure AD user page.