Microsoft Entra External ID and Swagger

Microsoft.Identity.Web Library

Microsoft.Identity.Web

Microsoft.Identity.Web version

2.16.1

Web app

Sign-in users and call web APIs

Web API

Protected web APIs call downstream web APIs

Token cache serialization

In-memory caches

Description

I need to setup on Microsoft Entra External ID authentication type, swagger. Swagger not autenticate user, why? It's Microsoft External ID problem?

Reproduction steps

Setup Swagger and configure External ID

Error message

AADB2C90205:+This+application+does+not+have+sufficient+permissions+against+this+web+resource+to+perform+the+operation

Id Web logs

No response

Relevant code snippets

builder.Services.AddSwaggerDocument(options =>
 {
     options.AddSecurity("bearer", Enumerable.Empty<string>(), new OpenApiSecurityScheme
     {
         Type = OpenApiSecuritySchemeType.OAuth2,
         Description = "B2C authentication",
         Flow = OpenApiOAuth2Flow.Implicit,
         Flows = new OpenApiOAuthFlows()
         {
             Implicit = new OpenApiOAuthFlow()
             {
                 Scopes = new Dictionary<string, string>
                 {
// I tryed in all formats such as { "https://b2cscdev.onmicrosoft.com/sc_businesslayer/default", "https://b2cscdev.onmicrosoft.com/sc_businesslayer/.default" },
                     { "api://08824a36-8993-4de5-b049-e15198a16786/.default", "api://08824a36-8993-4de5-b049-e15198a16786/.default" },
                 },
                 // or https://b2cscdev.b2clogin.com/b2cscdev.onmicrosoft.com/B2C_1_SignupSignin/oauth2/v2.0/authorize
                 AuthorizationUrl = "https://b2cscdev.ciamlogin.com/b2cscdev.onmicrosoft.com/oauth2/v2.0/authorize", // ?p=B2C_1_SignupSignin
                 TokenUrl = "https://b2cscdev.ciamlogin.com/b2cscdev.onmicrosoft.com/oauth2/v2.0/token"
             },
         }
     });

     options.OperationProcessors.Add(new AspNetCoreOperationSecurityScopeProcessor(JwtBearerDefaults.AuthenticationScheme));
 });

Regression