AuthenticationResult.UniqueId Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the Unique Id of the account in this TenantId
It is set as the oid (ObjectId) claim, or if that claim is null
, as the sub (Subject) claim which is guaranteed not-null.
public string UniqueId { get; }
member this.UniqueId : string
Public ReadOnly Property UniqueId As String
Property Value
Remarks
The oid claim identifies a user in all apps - Microsoft Identity Providers issue ID tokens with this claim, although it can be null in rare cases. The sub claim is "a locally unique and never reassigned identifier within the Issuer for the End-User" as per https://openid.net/specs/openid-connect-core-1_0.html and it is a mandatory claim with OIDC compliant issuers. Guest AAD accounts have different oid claim values in each tenant. Use Microsoft.Identity.Client.Account.HomeAccountId to uniquely identify users across tenants. See https://docs.microsoft.com/azure/active-directory/develop/id-tokens#payload-claims