Blazor Wasm Hosted Prerender with Authentication AuthenticationStateProvider not registered

I have an out of the box VS Template using Blazor WebAssembly Hosted with Authentication and have converted it over to use PreRendering. However, in doing so it looks like there are a lot of services that are included in the client side that are not provided on the server side. Here is the exception

An unhandled exception occurred while processing the request. InvalidOperationException: Cannot provide a value for property 'AuthenticationStateProvider' on type 'Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState'. There is no registered service of type 'Microsoft.AspNetCore.Components.Authorization.AuthenticationStateProvider'. Microsoft.AspNetCore.Components.ComponentFactory+<>c__DisplayClass6_0.g__Initialize|2(IServiceProvider serviceProvider, IComponent component)

Stack Query Cookies Headers Routing InvalidOperationException: Cannot provide a value for property 'AuthenticationStateProvider' on type 'Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState'. There is no registered service of type 'Microsoft.AspNetCore.Components.Authorization.AuthenticationStateProvider'. Microsoft.AspNetCore.Components.ComponentFactory+<>c__DisplayClass6_0.g__Initialize|2(IServiceProvider serviceProvider, IComponent component) Microsoft.AspNetCore.Components.ComponentFactory.PerformPropertyInjection(IServiceProvider serviceProvider, IComponent instance) Microsoft.AspNetCore.Components.ComponentFactory.InstantiateComponent(IServiceProvider serviceProvider, Type componentType) Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateChildComponentOnFrame(ref RenderTreeFrame frame, int parentComponentId) Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(ref DiffContext diffContext, int frameIndex) Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(ref DiffContext diffContext, int frameIndex) Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(ref DiffContext diffContext, int newFrameIndex) Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(ref DiffContext diffContext, int oldStartIndex, int oldEndIndexExcl, int newStartIndex, int newEndIndexExcl) Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, int componentId, ArrayRange oldTree, ArrayRange newTree) Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment) Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry) Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue() Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception) Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue() Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessPendingRender() Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToRenderQueue(int componentId, RenderFragment renderFragment) Microsoft.AspNetCore.Components.ComponentBase.StateHasChanged() Microsoft.AspNetCore.Components.ComponentBase.CallOnParametersSetAsync() Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception) Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToPendingTasks(Task task) Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterView parameters) Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderRootComponentAsync(int componentId, ParameterView initialParameters) Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.CreateInitialRenderAsync(Type componentType, ParameterView initialParameters) Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.RenderComponentAsync(Type componentType, ParameterView initialParameters) Microsoft.AspNetCore.Components.Rendering.RendererSynchronizationContext+<>c__11+<b__11_0>d.MoveNext() Microsoft.AspNetCore.Mvc.ViewFeatures.StaticComponentRenderer.PrerenderComponentAsync(ParameterView parameters, HttpContext httpContext, Type componentType) Microsoft.AspNetCore.Mvc.ViewFeatures.ComponentRenderer.PrerenderedWebAssemblyComponentAsync(HttpContext context, Type type, ParameterView parametersCollection) Microsoft.AspNetCore.Mvc.ViewFeatures.ComponentRenderer.RenderComponentAsync(ViewContext viewContext, Type componentType, RenderMode renderMode, object parameters) Microsoft.AspNetCore.Mvc.TagHelpers.ComponentTagHelper.ProcessAsync(TagHelperContext context, TagHelperOutput output) Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperRunner.g__Awaited|0_0(Task task, TagHelperExecutionContext executionContext, int i, int count) BBQFriend.Server.Pages.Pages__Host.b__9_1() in _Host.cshtml + Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperExecutionContext.SetOutputContentAsync() BBQFriend.Server.Pages.Pages__Host.ExecuteAsync() Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, bool invokeViewStarts) Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable statusCode) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable statusCode) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|29_0<TFilter, TFilterAsync>(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<TFilter, TFilterAsync>(ref State next, ref Scope scope, ref object state, ref bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters() Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync() Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events, IBackChannelLogoutService backChannelLogoutService) IdentityServer4.Hosting.MutualTlsEndpointMiddleware.Invoke(HttpContext context, IAuthenticationSchemeProvider schemes) Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) IdentityServer4.Hosting.BaseUrlMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Builder.Extensions.MapMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

What services can I register in the Server startup.cs to Register the necessary services?

Solution

I've been faced to the same issue and I resolved it in TheIdServer by registring and stubing some services :

services.AddRemoteAuthentication<RemoteAuthenticationState, RemoteUserAccount, OidcProviderOptions>();
services.AddScoped<AuthenticationStateProvider, RemoteAuthenticationService>()
    .AddScoped<SignOutSessionStateManager>()
    .AddTransient<IAccessTokenProvider, AccessTokenProvider>()
    .AddTransient<Microsoft.JSInterop.IJSRuntime, JSRuntime>();

RemoteAuthenticationService.cs

using Microsoft.AspNetCore.Components.Server;
using Microsoft.AspNetCore.Components.WebAssembly.Authentication;
using System.Threading.Tasks;

namespace Aguacongas.TheIdServer.Services
{
    public class RemoteAuthenticationService : ServerAuthenticationStateProvider, IRemoteAuthenticationService<RemoteAuthenticationState>
    {

        public Task<RemoteAuthenticationResult<RemoteAuthenticationState>> CompleteSignInAsync(RemoteAuthenticationContext<RemoteAuthenticationState> context)
        {
            return Success(context);
        }

        public Task<RemoteAuthenticationResult<RemoteAuthenticationState>> CompleteSignOutAsync(RemoteAuthenticationContext<RemoteAuthenticationState> context)
        {
            return Success(context);
        }

        public Task<RemoteAuthenticationResult<RemoteAuthenticationState>> SignInAsync(RemoteAuthenticationContext<RemoteAuthenticationState> context)
        {
            return Success(context);
        }

        public Task<RemoteAuthenticationResult<RemoteAuthenticationState>> SignOutAsync(RemoteAuthenticationContext<RemoteAuthenticationState> context)
        {
            return Success(context);
        }

        private static Task<RemoteAuthenticationResult<RemoteAuthenticationState>> Success(RemoteAuthenticationContext<RemoteAuthenticationState> context)
        {
            return Task.FromResult(new RemoteAuthenticationResult<RemoteAuthenticationState>
            {
                State = context.State,
                Status = RemoteAuthenticationStatus.Success
            });
        }
    }
}

AccessTokenProvider.cs

using Microsoft.AspNetCore.Components.WebAssembly.Authentication;
using System;
using System.Threading.Tasks;

namespace Aguacongas.TheIdServer.Services
{
    public class AccessTokenProvider : IAccessTokenProvider
    {
        public ValueTask<AccessTokenResult> RequestAccessToken()
        {
            throw new NotImplementedException();
        }

        public ValueTask<AccessTokenResult> RequestAccessToken(AccessTokenRequestOptions options)
        {
            throw new NotImplementedException();
        }
    }
}

JSRuntime.cs

using Microsoft.JSInterop;
using System.Threading;
using System.Threading.Tasks;

namespace Aguacongas.TheIdServer.Services
{
    public class JSRuntime : IJSRuntime
    {
        public ValueTask<TValue> InvokeAsync<TValue>(string identifier, object[] args)
        {
            return new ValueTask<TValue>();
        }

        public ValueTask<TValue> InvokeAsync<TValue>(string identifier, CancellationToken cancellationToken, object[] args)
        {
            return new ValueTask<TValue>();
        }
    }
}

I also remove :

builder.RootComponents.Add<App>("app");

from the blazor app's Program.cs