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To resolve the 400 response code for logout after upgrading to ABP 9.1.1, you need to ensure that the exact post_logout_redirect_uri (including port) used in the logout request is registered in your OpenIddict application's configuration.

In ABP 9.x (and recent OpenIddict versions), the post_logout_redirect_uri must match exactly (including scheme, host, and port) with one of the URIs registered for the client application. Registering only http://127.0.0.1 is not sufficient if your application uses random ports (e.g., http://127.0.0.1:31270/).

Solution:

  1. Register all possible redirect URIs with the port your desktop app uses, or use a wildcard if supported (OpenIddict does not support wildcards for security reasons).
  2. If your app uses random ports, you must pre-register each possible port, or use a fixed port for the redirect URI.

How to Register Multiple Redirect URIs:

  • In your OpenIddict client configuration (typically in OpenIddictDataSeedContributor.cs), add each allowed post logout redirect URI:
builder.WithPostLogoutRedirectUris(
      "http://127.0.0.1:31270/",
      "http://127.0.0.1:31271/",
      // Add all ports your app may use
  );
  • Alternatively, configure your desktop app to use a fixed port and register only that URI.

References:

This strict matching is a security requirement in recent OpenIddict versions and is enforced by ABP 9.x. Adjust your client registration or application logic accordingly to resolve the 400 error.


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This is a known behavior in ABP Framework. When you set "Abp.Account.IsSelfRegistrationEnabled" in the AuthServer's appsettings.json, it only sets the default value for the setting. The UI on the settings page (host/tenant → Account tab) displays the value from the AbpSettings table, not the default from appsettings.json. If there is no record in the AbpSettings table, the UI will show the default (which is "true" unless overridden in the database), even if the actual behavior is "false" due to your appsettings.json.

Once you toggle and save the setting in the UI, a record is created in the AbpSettings table, and the UI will then reflect the correct value.

Workaround / Solution:

  • To ensure the UI matches the actual behavior, you should create a record in the AbpSettings table for "Abp.Account.IsSelfRegistrationEnabled" with the value you want (e.g., "false") for the relevant provider (host/tenant).
  • Alternatively, toggle and save the setting once in the UI to create the record.

Why this happens:
ABP's setting system uses the following precedence:

  1. Value in the AbpSettings table (per provider/tenant)
  2. Default value from code or appsettings.json (if no record in DB)

The UI only reads from the database, not from appsettings.json, unless a record is created.

References:

This is the expected design in ABP Framework. If you want the UI to always reflect the appsettings.json value, you would need to customize the settings management UI to also read from configuration, which is not the default behavior.


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  • 在 ABP 微服务架构中,服务间调用 API 时,必须携带有效的 access_token,并且目标服务需要正确配置认证和授权。常见导致 401 Unauthorized 的原因有:
  1. access_token 已过期或无效。请确保 token 是最新获取的,并且未过期。
  2. token 的 audience、issuer 配置不匹配。请检查 JwtBearerOptions 的 Authority 和 Audience 配置,确保与 AuthServer 保持一致。
  3. 微服务未正确集成 Volo.Abp.Http.Client.IdentityModel 包。推荐在需要调用其他服务的模块依赖 AbpHttpClientIdentityModelModule,这样会自动从 HttpContext 传递 access_token。
  4. 权限策略未正确配置。目标 API 需要的权限必须在调用方用户的 claims 中存在。

示例配置(以 API 服务为例):

context.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.Authority = "https://localhost:44301/";
        options.Audience = "MyProjectName";
    });

微服务调用时自动传递 token:

[DependsOn(
    typeof(AbpHttpClientIdentityModelModule)
)]
public class MyModule : AbpModule
{
    // ...
}

详细排查步骤:

  • 检查 token 是否过期(可通过日志或 JWT 解码工具查看 exp 字段)。
  • 检查 token 的 aud、iss 是否与服务配置一致。
  • 检查调用方和被调用方的认证配置是否一致。
  • 检查权限策略和用户 claims。

官方文档与案例:

  • https://abp.io/docs/latest/samples/microservice-demo
  • https://abp.io/community/articles/4u3wrbs5

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To customize all background colors in the LeptonX Dark and Dim themes, you should override the relevant SCSS variables defined in the theme's color map files. Here’s how you can do it:

  1. Variables Defining Background Colors
    • For LeptonX, background colors for each theme (dark, dim, light) are defined in their respective SCSS files:
      • src/styles/_colors/dark/colors.scss (for Dark)
      • src/styles/_colors/dim/colors.scss (for Dim)
    • The key variables you should look for and override include:
      • content-bg (main content area)
      • navbar-active-bg-color, navbar-color (top bar)
      • card-bg (cards and panels)
      • container-active-text, content-text (text color on backgrounds)
    • Example properties from the theme map:
card-bg,
     content-bg,
     navbar-active-bg-color,
     navbar-color,
     ...
  1. How to Override
    • The best practice is to create a custom SCSS file (e.g., custom-leptonx-overrides.scss) and import it after the default LeptonX theme styles in your global styles.
    • In your custom file, override the variables for the dark and dim themes. For example:
// For Dark theme
     [data-theme="dark"] {
       --lpx-content-bg: #2d1e12 !important; // Example brown
       --lpx-navbar-color: #3a2415 !important;
       --lpx-card-bg: #3a2415 !important;
     }

     // For Dim theme
     [data-theme="dim"] {
       --lpx-content-bg: #3b2a1a !important;
       --lpx-navbar-color: #4a3320 !important;
       --lpx-card-bg: #4a3320 !important;
     }
  • Place this file in your Angular project's global styles (e.g., add to styles.scss or reference in angular.json after the default LeptonX styles).
  1. Apply Across the Application
    • By targeting the [data-theme="dark"] and [data-theme="dim"] selectors, your overrides will apply globally whenever those themes are active.
    • Make sure your custom CSS is loaded after the default LeptonX theme CSS to ensure your values take precedence.

Summary of Steps:

  1. Identify the variables in the LeptonX theme map for backgrounds.
  2. Create a custom SCSS/CSS file with your overrides.
  3. Import your custom file after the default theme styles in your Angular project.

Sources


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To ensure your custom code is preserved and correctly generated in ABP Suite's templates, you must use the special custom code block placeholders provided by ABP Suite. When customizing templates like Frontend.Mvc.Page.CreateModal.cshtml.txt or Frontend.Mvc.Page.EditModal.cshtml.txt, any code you want to persist and regenerate must be placed between these placeholders:

<!--<suite-custom-code-block-0>-->
<!--</suite-custom-code-block-0>-->

For example, to add a <div> before the <abp-modal> tag and ensure it is not lost during code generation, wrap your custom code like this:

<!--<suite-custom-code-block-0>-->
<div>Your custom content here</div>
<!--</suite-custom-code-block-0>-->
<abp-modal id="...">
    ...
</abp-modal>

ABP Suite will preserve and move any code inside these blocks during regeneration. If you add custom code outside of these placeholders, it may be ignored or overwritten by the generator, especially after the property section or template variables.

  • Use unique numbers for each custom block if you need multiple customizations.
  • The order and numbering of placeholders do not need to be sequential.

For more details, see the official documentation below.

Sources:

  • https://abp.io/docs/latest/suite/customizing-the-generated-code
  • https://abp.io/support/questions/4328

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  • The error ABP-LIC-0016 - You are not granted permission to use the module 'Volo.CmsKit.Pro.Common.HttpApi-v9.3.1.0' means your current ABP license does not include access to the CMS Kit Pro module.

  • The ABP Business license does not grant permission for all commercial modules. Specifically, CMS Kit Pro is only available for certain license tiers (typically Enterprise). Attempting to use a module not covered by your license will result in this error and prevent the application from running.

How to resolve:

  1. Remove all references to Volo.CmsKit.Pro and related Pro modules from your solution. Use only the open-source CMS Kit modules if you do not have the required license.
  2. If you require CMS Kit Pro features, you must upgrade your license to a tier that includes CMS Kit Pro (usually Enterprise).

Steps:

  • Open your solution and remove any NuGet package references to Volo.CmsKit.Pro.*.
  • Remove any code or configuration that depends on CMS Kit Pro features.
  • Rebuild and run your application.

Reference:


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To completely disable self-registration in ABP Framework (v9), including removing the registration link from your custom login page and disabling the registration API endpoint (api/account/register), follow these steps:

  1. Disable Self-Registration in Settings:

    • Go to the Settings page in your application (usually /SettingManagement).
    • Set "Allow Self Registration" to false. This will hide the registration link on the login page and prevent users from registering themselves via the UI.
  2. Remove or Hide Registration Link in Custom Login Page:

    • If you have a custom login page, ensure you do not render the registration link/button. Typically, the link is shown only if self-registration is enabled:
@if (await SettingProvider.IsTrueAsync(AccountSettingNames.IsSelfRegistrationEnabled))
     {
         // Do NOT render the registration link if self-registration is disabled
     }
  1. Disable the Registration API Endpoint:
    • To prevent access to the api/account/register endpoint, override or remove the related service in your application module. You can do this by replacing the AccountController or the Register method with your own implementation that returns a 404 or 403, or by removing the endpoint entirely if you have the source code.
    • Alternatively, you can use ABP's authorization system to restrict access:
[Authorize("Never")]
     public override Task<IdentityUserDto> RegisterAsync(RegisterDto input)
     {
         throw new AbpAuthorizationException("Self registration is disabled.");
     }
  • Or, if you are using the Pro module, you can override the relevant service or controller to block registration.
  1. Swagger UI:
    • After disabling the endpoint, it will no longer appear in Swagger if you remove or override it as described above.

Note: Disabling self-registration in settings only hides the UI and disables the API logic, but the endpoint may still be visible in Swagger unless you override or remove it as described.

Sources:


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When the ABP Angular frontend cannot reach the backend, it cannot load the backend localization resources. In this scenario, the Angular app falls back to the default value specified in the code, which is "MyProjectName" for the AppName key. This is why you see "MyProjectName" as the browser tab title when the backend is offline, regardless of your index.html or manual overrides.

To override this fallback and ensure your desired title ("pro") is always used even when the backend is unavailable, you should provide a frontend-only localization resource for the AppName key in your Angular app. This way, the Angular localization system will use your value instead of the default.

How to fix:

  1. In your app.module.ts, add a frontend localization entry for AppName:
import { provideAbpCore, withOptions } from '@abp/ng.core';

   @NgModule({
     providers: [
       provideAbpCore(
         withOptions({
           localizations: [
             {
               culture: 'en',
               resources: [
                 {
                   resourceName: 'pro', // Use your resource name
                   texts: {
                     "AppName": "pro"
                   }
                 }
               ]
             }
           ]
         }),
       ),
     ],
   })
   export class AppModule {}
  1. Make sure the resourceName matches the one used in your backend (e.g., "pro").

  2. This ensures that even if the backend is unreachable, the Angular app will use "pro" for the AppName key.

Reference:

This approach is the recommended way to provide fallback localization values for frontend-only scenarios in ABP Angular.


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To hide the "Idle Session Timeout" tab from the Settings page for all users (host and tenant) in an ABP Angular application, you need to remove or hide the related setting from the UI. The ABP Framework does not provide a direct configuration to hide individual settings tabs out-of-the-box, so you must customize the Angular UI.

The recommended approach is to override or customize the Angular settings component to exclude the "Idle Session Timeout" tab. Here are the general steps:

  1. Locate the settings module/component in your Angular project (commonly under src/app/proxy/account/settings or similar).
  2. Find the code that defines the tabs for the Account settings.
  3. Remove or comment out the entry for the "Idle Session Timeout" tab, or add a condition to hide it for all users.

If you want to ensure the setting is not available at the backend level as well, you can also override the related setting definition in your application layer to set isVisibleToClients: false for the idle session timeout setting. This will prevent it from being sent to the client.

Example (in your module's SettingDefinitionProvider):

context.Add(
    new SettingDefinition(
        AccountSettingNames.IdleSessionTimeout,
        defaultValue: "60",
        isVisibleToClients: false // Hide from all clients
    )
);

After making these changes, rebuild and redeploy your application. The "Idle Session Timeout" tab should no longer appear in the settings UI for any user.

Sources:


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Answer

The detailed audit log change tracking (showing both old and new values for each property) that you see on the official ABP demo website is available in the latest ABP Commercial versions. According to the footer in your screenshot, the official demo is running on ABP v9.2.3.

Your project is using v8.3.0, which does not include the enhanced audit log UI and API features for displaying property-level change details in the same way as v9.x. These improvements were introduced in later versions after v8.3.0.

To get the same audit log detail experience as the official website, you need to upgrade your solution to at least ABP v9.2.3.

Sources:


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Made with ❤️ on ABP v10.0.0-preview. Updated on September 12, 2025, 10:20