Fix options (choose one):
A) Configure Redis distributed lock provider correctly
Add Medallion Redis provider registration and valid Redis connection string.
appsettings.json: { "Redis": { "Configuration": "127.0.0.1:6379" // change to your host:port or connection string } }
Module configuration: using Medallion.Threading; using Medallion.Threading.Redis; using StackExchange.Redis;
[DependsOn(typeof(AbpDistributedLockingModule))] public class YourModule : AbpModule { public override void ConfigureServices(ServiceConfigurationContext context) { var configuration = context.Services.GetConfiguration(); context.Services.AddSingleton<IDistributedLockProvider>(sp => { var conn = ConnectionMultiplexer.Connect(configuration["Redis:Configuration"]); return new RedisDistributedSynchronizationProvider(conn.GetDatabase()); }); } }
Ensure your Redis server is running and reachable from the app container/host. If your Redis requires password or user, use a full StackExchange.Redis connection string, e.g. host:port,password=yourpw,abortConnect=false. The abortConnect=false (or AbortOnConnectFail=false) allows the multiplexer to keep retrying during transient startup.
B) Disable background jobs (removes need for distributed lock at startup)
C) Use a different lock provider (e.g., database) or defer lock provider registration in environments without Redis If you can’t run Redis in dev/staging, either:
Quick checklist
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Current status
Roadmap
What you can do today (ABP 10.0, Blazor Web App)
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Do one of the following: A) Create a Host app and import your module
B) Start from an Empty solution, add a module, then add a Host app
Notes:
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Fix it by injecting IConfiguration (or using GetRequiredService<IConfiguration> from the service provider) and using it where _configuration is referenced.
Option A: Constructor inject IConfiguration in the seeder
Example:
using Microsoft.Extensions.Configuration;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Data;
namespace Microservicev10.IdentityService.Data.OpenIddict;
public class OpenIddictDataSeeder : IDataSeedContributor, ITransientDependency
{
private readonly IConfiguration _configuration;
// other injections...
public OpenIddictDataSeeder(
IConfiguration configuration
/* other dependencies */
)
{
_configuration = configuration;
// assign others...
}
public async Task SeedAsync(DataSeedContext context)
{
// Use _configuration["OpenIddict:Applications:MyClient:RootUrl"] etc.
// Your existing seeding logic...
}
}
Option B: Resolve IConfiguration on demand If you already have IServiceProvider injected, resolve configuration when needed:
public async Task SeedAsync(DataSeedContext context)
{
var configuration = _serviceProvider.GetRequiredService<IConfiguration>();
var rootUrl = configuration["OpenIddict:Applications:MyClient:RootUrl"];
// ...
}
Common places that use _configuration in OpenIddict seeders:
Also ensure the seeder runs:
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Architecture to meet your requirements
Steps
GlobalFeatureManager.Instance.Modules.CmsKit(cmsKit =>
{
cmsKit.EnableAll(); // or enable specific CmsKit features
});
GlobalFeatureManager.Instance.Modules.CmsKitPro(cmsKitPro =>
{
cmsKitPro.EnableAll(); // or enable specific Pro features like Newsletter, Contact Form, URL Forwarding, Poll, etc.
});
- Add EF Core migration and update the database after enabling features.
Configure tenant resolution for the Public Website
Anonymous/public access
[AllowAnonymous]
public class MyPublicController : AbpController
{
// read-only endpoints rendering tenant-specific content
}
One public site vs per-tenant sites
Features per tenant
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Apply the checklist below. It mirrors the verified ABP guidance and fixes most AAD external login issues.
A. Ensure the correct external SignIn scheme and claim mapping
private void ConfigureExternalProviders(ServiceConfigurationContext context)
{
var configuration = context.Services.GetConfiguration();
context.Services.AddAuthentication()
.AddOpenIdConnect("AzureOpenId", "Azure Active Directory OpenId", options =>
{
options.Authority = "https://login.microsoftonline.com/" + configuration["AzureAd:TenantId"] + "/v2.0/";
options.ClientId = configuration["AzureAd:ClientId"];
options.ClientSecret = configuration["AzureAd:ClientSecret"];
options.ResponseType = OpenIdConnectResponseType.CodeIdToken; // or Code
options.CallbackPath = configuration["AzureAd:CallbackPath"]; // e.g. /signin-azuread-oidc
options.RequireHttpsMetadata = true; // keep true in Azure
options.SaveTokens = true;
options.GetClaimsFromUserInfoEndpoint = true;
// Important for ABP external logins:
options.SignInScheme = IdentityConstants.ExternalScheme;
options.Scope.Add("email");
options.ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "sub");
// If you need to override RedirectUri in prod (behind reverse proxy):
if (context.Services.GetHostingEnvironment().IsProduction())
{
options.Events = new OpenIdConnectEvents
{
OnRedirectToIdentityProvider = ctx =>
{
// Use your public https URL + CallbackPath, if Azure is terminating TLS/proxying.
// Example: https://your-public-domain/signin-azuread-oidc
ctx.ProtocolMessage.RedirectUri = configuration["AzureAd:RedirectToIdentityProviderUri"];
return Task.CompletedTask;
}
};
}
});
}
B. Validate Redirect URI and CallbackPath consistency
C. Ensure email scope is requested
D. Behind reverse proxy/Azure App Service specifics
E. Cookie/SameSite considerations
F. Quick diagnostics
G. Multi-tenant or dynamic provider settings (if applicable)
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Why the 403 happens
Fix your account/organization linkage
Implementing cart → checkout → payment → access granting
If you use the ABP Payment Module (Commercial):
If you can’t use the Commercial module:
Example event handler to grant access after payment:
public class OrderPaidEventHandler : ILocalEventHandler<OrderPaidEvent>, ITransientDependency
{
private readonly IRepository<Enrollment, Guid> _enrollmentRepo;
public OrderPaidEventHandler(IRepository<Enrollment, Guid> enrollmentRepo)
{
_enrollmentRepo = enrollmentRepo;
}
public async Task HandleEventAsync(OrderPaidEvent eventData)
{
var order = eventData.Entity;
foreach (var item in order.Items)
{
await _enrollmentRepo.InsertAsync(new Enrollment(order.UserId, item.CourseId), autoSave: true);
}
}
}
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Root cause: A known NullReferenceException occurs on the Users page when clicking entity actions (like Sessions or View Details) if the corresponding modal/component references are not initialized in Blazor Web App (Interactive Server/Auto). In ABP 10.0 (Identity Pro Blazor), the action handlers expect their modal components to be present and referenced. If those components are missing/not rendered (e.g., conditional rendering or missing @ref), the backing fields like SessionsModal or ViewDetailsModal are null and actions throw.
Fix: Ensure the required modals/components are in the page markup and their references are assigned before actions run.
Concrete example for a customized Users page (pattern you can adopt for Sessions/View Details too):
@using Volo.Abp.PermissionManagement.Blazor.Components
<MudDataGrid T="IdentityUserDto" @ref="_dataGrid" ServerData="LoadServerData">
<!-- ...columns... -->
<Columns>
<MudBlazor.Column T="IdentityUserDto" Field="@nameof(IdentityUserDto.Id)" Title="@L["Actions"]">
<CellTemplate>
<MudIconButton Icon="fas fa-user-lock"
OnClick="@(async (_) => await OpenPermissionsModalAsync(context.Item))"
Size="MudBlazor.Size.Small" />
<MudIconButton Icon="fas fa-list"
OnClick="@(async (_) => await OpenSessionsAsync(context.Item))"
Size="MudBlazor.Size.Small" />
<MudIconButton Icon="fas fa-eye"
OnClick="@(async (_) => await OpenViewDetailsAsync(context.Item))"
Size="MudBlazor.Size.Small" />
</CellTemplate>
</MudBlazor.Column>
</Columns>
</MudDataGrid>
<!-- Place required modals and capture refs -->
<MudPermissionManagementModal @ref="_permissionManagementModal" />
<UserSessionsModal @ref="_sessionsModal" />
<UserViewDetailsModal @ref="_viewDetailsModal" />
And in code-behind:
private MudPermissionManagementModal _permissionManagementModal;
private UserSessionsModal _sessionsModal;
private UserViewDetailsModal _viewDetailsModal;
protected virtual async Task OpenPermissionsModalAsync(IdentityUserDto entity)
{
await _permissionManagementModal.OpenDialogAsync(PermissionProviderName, entity.Id.ToString());
}
protected virtual async Task OpenSessionsAsync(IdentityUserDto entity)
{
// Ensure _sessionsModal is not null
await _sessionsModal.OpenAsync(entity.Id);
}
protected virtual async Task OpenViewDetailsAsync(IdentityUserDto entity)
{
await _viewDetailsModal.OpenAsync(entity.Id);
}
If you replaced/overrode the default Identity Users page:
For Interactive Auto/Server:
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Apply all of the following:
A) Keep issuer clean in Angular
oAuthConfig: {
issuer: 'https://xxxxxxxx.azurewebsites.net', // NO trailing path, NO query
redirectUri: 'https://{0}.your-domain.com',
clientId: 'YourClientId',
responseType: 'code',
scope: 'offline_access YourScope',
requireHttps: true
}
If issuer already includes /.well-known/openid-configuration or includes a query, Angular’s OIDC discovery will break.
B) Pass __tenant only to the authorize request
import { AuthService, SessionStateService } from '@abp/ng.core';
import { Injectable, inject } from '@angular/core';
@Injectable({ providedIn: 'root' })
export class TenantAwareLogin {
private auth = inject(AuthService);
private session = inject(SessionStateService);
start() {
const t = this.session.getTenant();
const tenantParam = t?.id?.toString() ?? t?.name ?? null;
if (tenantParam) {
this.auth.navigateToLogin({ __tenant: tenantParam });
} else {
this.auth.navigateToLogin();
}
}
}
C) Avoid patching OAuth discovery If you patched OAuthService.startLogin or globally appended query params to all OAuth URLs, revert that. Only pass __tenant through AuthService.navigateToLogin extras so it reaches authorize, not discovery.
D) Auth Server (shared domain)
E) Quick checklist to eliminate the bad URL
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