To ensure that the "Change Password on First Login" form is shown after a username change, you need to verify that the user's ShouldChangePasswordOnNextLogin property is set to true after creating or updating the user. Changing the username alone does not automatically trigger the password change prompt on the next login.
Solution:
ShouldChangePasswordOnNextLogin = true.ShouldChangePasswordOnNextLogin = true for that user.Example (C#):
user.ShouldChangePasswordOnNextLogin = true;
await _userManager.UpdateAsync(user);
Summary:
Changing the username does not trigger the password change form. You must explicitly set ShouldChangePasswordOnNextLogin to true for the user to see the password change prompt on their next login.
Sources:
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To prevent users from setting the same password as the current one when using the "Set Password" feature for tenants, you need to implement a custom password validation in your application. By default, ABP does not check if the new password is the same as the existing password.
You can override the password setting logic in your custom TenantAppService. Here’s how you can do it:
Example:
public async override Task SetPasswordAsync(Guid id, SaasTenantSetPasswordDto input)
{
    var tenantAdminUser = // get the tenant admin user by tenant id
    var isSame = await _userManager.CheckPasswordAsync(tenantAdminUser, input.Password);
    if (isSame)
    {
        throw new UserFriendlyException("Entered an existing password");
    }
    await base.SetPasswordAsync(id, input);
}
This will ensure that users cannot set the password to the existing one and will receive an appropriate error message.
Sources:
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When users see a "Confirm Form Resubmission" page after clicking the browser back button from the forgot password page, it is due to the browser trying to re-execute a POST request. This is a standard browser behavior when navigating back to a page that was the result of a form submission (POST).
To avoid this, you should implement the Post/Redirect/Get (PRG) pattern in your ABP login and forgot password flows. After processing a POST request (such as submitting the forgot password form), redirect the user to a GET page (such as a confirmation or the login page). This way, if the user navigates back, the browser will only re-request the GET page, not the POST, and the resubmission warning will not appear.
Example for Razor Pages:
public async Task<IActionResult> OnPostAsync()
{
    if (!ModelState.IsValid)
    {
        return Page();
    }
    // Process forgot password logic here
    // Redirect to a confirmation page (GET)
    return RedirectToPage("./ForgotPasswordConfirmation");
}
This approach ensures that after a POST, the user is always redirected to a GET, preventing form resubmission issues.
Sources:
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Checklist to resolve the login button issue:
Check AuthServer is Running:
Correct Redirect URLs:
appsettings.json (AuthServer and Angular), make sure the App:SelfUrl and AuthServer:Authority are set to the correct URLs (e.g., http://localhost:4200 for Angular, and the actual AuthServer URL).environment.ts should have oAuthConfig.issuer set to the AuthServer URL.CORS Configuration:
appsettings.json of AuthServer, add the Angular URL to CorsOrigins:"App": {
       "CorsOrigins": "http://localhost:4200"
     }
Hosts File (if using custom domains):
angular.localtest.me), ensure your hosts file and all URLs match.Browser Console Errors:
Rebuild and Restart:
abp install-libs, rebuild, and restart all backend and frontend projects.Check OAuth Configuration in Angular:
environment.ts:oAuthConfig: {
       issuer: 'https://localhost:44368', // AuthServer URL
       clientId: 'AbpSolution3_App',      // Should match your app registration
       scope: 'offline_access openid profile role email phone'
     }
If you see a blank page or nothing happens:
References
If you follow these steps and the login button still does not work, please check the browser console for errors and verify that both the Angular and AuthServer URLs are correct and accessible.
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When creating a new tenant via the ABP Tenant Management API, the admin user for the tenant should be assigned the default roles and permissions as part of the tenant seeding process. However, if the admin user cannot create additional users (receiving a 403 Forbidden error), it usually means the necessary permissions (such as "Identity.Users.Create") are not granted to the admin role or the admin user.
This issue can occur if:
Check Permission Seeding Logic
DbMigrationService or similar) assigns all required permissions to the admin role for each tenant.Example logic:
foreach (var tenant in tenants)
   {
       using (_currentTenant.Change(tenant.Id))
       {
           await SeedDataAsync(tenant);
       }
   }
Verify Permission Assignment
AbpIdentity.Users.Create).AbpPermissionGrants table) or via the Permission Management UI.Update Seeding if Needed
Test Tenant Creation
Reference Example
await _permissionManager.SetForRoleAsync(
    roleId: adminRoleId,
    permissionName: "AbpIdentity.Users.Create",
    isGranted: true
);
This ensures the admin role has the required permission.
Sources:
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You are experiencing severe performance issues during login when users are mapped to a large number of organization units (e.g., 1500+ per user, 3000 users total) after upgrading to ABP 9.0. This is a known challenge when the claims principal is populated with a very large number of organization unit claims, as each claim is loaded and processed during authentication.
Claims Optimization:
Recommended Approaches:
IUserClaimsPrincipalFactory to limit or filter the organization unit claims added to the principal.Reference Implementation:
Example: Custom Claims Principal Factory
public class MyUserClaimsPrincipalFactory : AbpUserClaimsPrincipalFactory
   {
       public MyUserClaimsPrincipalFactory(
           UserManager<IdentityUser> userManager,
           RoleManager<IdentityRole> roleManager,
           IOptions<IdentityOptions> optionsAccessor)
           : base(userManager, roleManager, optionsAccessor)
       {
       }
       protected override async Task AddOrganizationUnitsAsync(IdentityUser user, ClaimsIdentity identity)
       {
           // Only add a limited number of OUs, or none, or a summary claim
           // Example: Add only the first 10 OUs
           var organizationUnits = await UserManager.GetOrganizationUnitsAsync(user);
           foreach (var ou in organizationUnits.Take(10))
           {
               identity.AddClaim(new Claim(AbpOrganizationUnitClaimType, ou.Id.ToString()));
           }
       }
   }
Sources:
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If you are encountering an error stating "There is no entity IdentityUser with id" even though the user exists in the AbpUsers table, this typically indicates a mismatch or inconsistency between your application's user management logic and the actual data in the database.
Here are the steps to resolve this issue:
Verify User Existence:
Check for Data Consistency:
Seeding and Migration:
Passwords:
Troubleshooting:
For more details, refer to the official documentation:
Sources
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Sources:
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To resolve the 404 error for email confirmation and password reset links in your multi-tenant ABP microservice solution, you must ensure that:
Your current environment variables show:
App__SelfUrl = https://auth.{0}.cloverleafcms.devAuthServer__Authority = https://authserver.cloverleafcms.devThe AuthServer__Authority should also use the {0} placeholder for tenant resolution:
AuthServer__Authority = https://auth.{0}.cloverleafcms.dev
This allows the system to generate tenant-specific URLs.
App:SelfUrl and AuthServer:Authority settings to generate these links. Both must be tenant-aware.App__SelfUrl and AuthServer__Authority to use the {0} placeholder."App": {
    "SelfUrl": "https://auth.{0}.cloverleafcms.dev"
  },
  "AuthServer": {
    "Authority": "https://auth.{0}.cloverleafcms.dev"
  }
Follow the official ABP documentation for multi-tenant domain resolving in microservice solutions:
Ensure your configuration matches the documented approach, especially for subdomain-based tenant resolution.
https://auth.cooptrustcu.cloverleafcms.dev/Account/EmailConfirmation?userId=...
Summary:
Update your AuthServer__Authority to use the {0} placeholder for tenant subdomains, ensure your tenant resolver is subdomain-aware, and verify your email link generation uses tenant-specific URLs. Follow the ABP multi-tenant domain resolving guide for full details.
Sources (validated):
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When you define custom permissions in ABP, they must be properly registered and exposed to the permission management system for them to appear in the Identity > Roles > Permissions modal (in Angular or any UI).
If your custom permissions are present in the AbpPermissionGrants table but not visible in the UI, the most common causes are:
Permission Definition Provider Not Registered
Ensure your custom permissions are defined in a class that inherits from PermissionDefinitionProvider and that this provider is registered in your module's configuration. The provider should be in the Application.Contracts project of the module.
Application.Contracts Reference Missing
For modular or microservice solutions, the Application.Contracts project containing your permission definitions must be referenced by the service responsible for permission management (typically the IdentityService or AdministrationService). If this reference is missing, the permissions will not be loaded into the UI.
Rebuild and Restart
After adding new permissions or updating references, rebuild your solution and restart all related services (especially those responsible for permission management).
Cache Issues
ABP caches permission definitions. Clear your distributed cache (e.g., Redis) after making changes to permissions to ensure the UI reflects the latest definitions.
Database Migration
Make sure all migrations are applied and the database is up to date.
Checklist to resolve:
PermissionDefinitionProvider is implemented and registered.References:
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