FAQs
Issue in creating users in Entra after federating domain with InstaSafe ZTAA
Once you federate a given Microsoft 365 domain with an external identity provider, like InstaSafe ZTAA, you may no longer create new users in that domain from the Entra or Microsoft/Office 365 consoles. You will need to create the users in your source Active Directory and have Entra Connect sync them from the on-premises directory into the cloud. See additional explanation on this topic in the Microsoft troubleshooting article You can't assign a federated domain to a user in the Microsoft 365 Admin Center.