C
C#hunterlan

No authenticationScheme was specified, and there was no DefaultChallengeScheme found.

Hello, there! I added JWT Authentication to my ASP.NET Core Web API project by this code snipper: 
builder.Services.AddAuthentication(a =>
  {
    a.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
  })
  .AddJwtBearer("jwt", o =>
  {
    o.TokenValidationParameters = new TokenValidationParameters()
    {
      ValidIssuer = config["Jwt:Issuer"],
      ValidAudience = config["Jwt:Audience"],
      IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(config["Jwt:Key"]!)),
      ValidateIssuer = true,
      ValidateAudience = true,
      ValidateLifetime = true,
      ValidateIssuerSigningKey = true
    };
  });
builder.Services.AddAuthentication(a =>
  {
    a.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
  })
  .AddJwtBearer("jwt", o =>
  {
    o.TokenValidationParameters = new TokenValidationParameters()
    {
      ValidIssuer = config["Jwt:Issuer"],
      ValidAudience = config["Jwt:Audience"],
      IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(config["Jwt:Key"]!)),
      ValidateIssuer = true,
      ValidateAudience = true,
      ValidateLifetime = true,
      ValidateIssuerSigningKey = true
    };
  });
Then, when I'm requesting any endpoint that requires authorization, asp.net core throws an exception: 
System.InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).
   at Microsoft.AspNetCore.Authentication.AuthenticationService.ChallengeAsync(HttpContext context, String scheme, AuthenticationProperties properties)
   at Microsoft.AspNetCore.Authorization.Policy.AuthorizationMiddlewareResultHandler.<>c__DisplayClass0_0.<<HandleAsync>g__Handle|0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)
System.InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).
   at Microsoft.AspNetCore.Authentication.AuthenticationService.ChallengeAsync(HttpContext context, String scheme, AuthenticationProperties properties)
   at Microsoft.AspNetCore.Authorization.Policy.AuthorizationMiddlewareResultHandler.<>c__DisplayClass0_0.<<HandleAsync>g__Handle|0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)
What am I doing wrong?
B
Baturhan•144d ago
Did you use "UseAuthorizion"
H
hunterlan•144d ago
There's Program.cs file: 
using System.Text;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using TubeGram.API.Helpers;

var builder = WebApplication.CreateBuilder(args);
var config = builder.Configuration;
// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

builder.Services.AddDbContext<ApplicationContext>(opt => opt.UseSqlServer(config.GetSection("ConnectionString").Value));
builder.Services.AddAuthentication(a =>
{
    a.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer("jwt", o =>
{
    o.TokenValidationParameters = new TokenValidationParameters
    {
        ValidIssuer = config["Jwt:Issuer"],
        ValidAudience = config["Jwt:Audience"],
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(config["Jwt:Key"]!)),
        ValidateIssuer = true,
        ValidateAudience = true,
        ValidateLifetime = true,
        ValidateIssuerSigningKey = true
    };
});

var app = builder.Build();

using (var scope = app.Services.CreateScope())
{
    var dbContext = scope.ServiceProvider.GetRequiredService<ApplicationContext>();
    // use context
    dbContext.Database.EnsureCreated();
}

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();
using System.Text;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using TubeGram.API.Helpers;

var builder = WebApplication.CreateBuilder(args);
var config = builder.Configuration;
// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

builder.Services.AddDbContext<ApplicationContext>(opt => opt.UseSqlServer(config.GetSection("ConnectionString").Value));
builder.Services.AddAuthentication(a =>
{
    a.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    a.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer("jwt", o =>
{
    o.TokenValidationParameters = new TokenValidationParameters
    {
        ValidIssuer = config["Jwt:Issuer"],
        ValidAudience = config["Jwt:Audience"],
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(config["Jwt:Key"]!)),
        ValidateIssuer = true,
        ValidateAudience = true,
        ValidateLifetime = true,
        ValidateIssuerSigningKey = true
    };
});

var app = builder.Build();

using (var scope = app.Services.CreateScope())
{
    var dbContext = scope.ServiceProvider.GetRequiredService<ApplicationContext>();
    // use context
    dbContext.Database.EnsureCreated();
}

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();
OK, I solved this. I don't know why I added parameter "jwt" in 
.AddJwtBearer("jwt", o =>
.AddJwtBearer("jwt", o =>
, but I removed it and it starts to work correctly.
Want results from more Discord servers?
Add your server
More Posts
MVVM WPF - Change Color in ColorAnimation in Style ControlTemplate on RuntimeI have various styles with color animations, and I need to change the "To" color of a color animatioSmart enums, inheritance and "siblings" behaving weirdly and I don't understand why.So, I'm using `Ardalis.SmartEnum` to create some smart enums with data members. I found myself haviHey guys I need some troubleshooting with a C# task using BFSI have a task that I's mostly working but sometimes I have undesirable outputs and not behaving righMVVM - View model with collection of view models?Within MVVM, can a view model have a collection of view models? Is it okay to do: ``` class BasketV2 QuestionsHi, I need to ask 2 questions as i am new to C#. So im missing 2 tasks to deploy my first app. And iRaw SQL Query QuestionI have a raw SQL query that I need to execute against a database that's external to my application. ✅ Help for unityGood evening I am looking for someone who can teach me how to create a game from A to Z. Even if I dAny way to get XAML Auto-complete in VS Code?I recognize this isn't quite a C# question, but it's related. I want to make cross platform apps usi