We have Azure AD (AAD) in our company. Our mailbox will add .cn. For example, domain is email@example.com, mailbox is firstname.lastname@example.org. When vendor grant for us the permission to use their apps base on Azure, we can't login or login with error. We need to login with AAD password but after that will pop out error. Vendor can just grant permission to access apps base on mailbox.
Request Id: 0772fbf2-4493-4ea5-8913-0b4928382100 Correlation Id: 273c0277-0a3e-4a70-8292-ee37c1e43f5d Timestamp: 2020-10-13T07:54:24Z Message: AADSTS90072: User account 'email@example.com' from identity provider 'https://sts.windows.net/5dd15f43-6a13-4730-b092-b76a786f8f55/' does not exist in tenant 'Dick's Sporting Goods, Inc.' and cannot access the application '53b3e540-259e-4de3-b8f9-17826ae79e0b'(FlexPLM) 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