I created an app with teh Microsoft App registration portal.
I can use this app with the a user in the Azure AD tenant that created this app. The Azure AD tenant is linked to an office 365 business subscription.
If I try to use this app with a user thatbelongs to a life.com tenat, an error is shown right after the Microsoft sign in screen:
Message: AADSTS50020: User account 'firstname.lastname@example.org' from identity provider 'live.com' does not exist in tenant 'My-Tenant' and cannot access the application 'asdf-asd-1234-asd-12341234' in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.
According to the app manifest other tenants are allowed:
"tags": [ "NoLiveSdkSupport", "appModelVersion:2", "accessTokenVersion:1", "availableToOtherTenants:true", "supportsConvergence:true", "emailAddress:email@example.com" ],
How do I register an app that can be used by users from all Microsoft tenants?