Federating Microsoft 365 / EntraID Guest Accounts with Okta23 March 2025·530 words·3 minsMicrosoft Azure GuestAccount AzureGuest Office365 Okta OIDC EntraID B2BHow to handle EntraID B2B guest accounts in Okta: tenant-specific OIDC endpoints, username mapping, and the common pitfalls that block sign-in.