# Add Microsoft Entra ID authentication (Members)

This tutorial takes you through configuring Microsoft Entra ID (Azure Active Directory/Azure AD) for the member login on your Umbraco CMS website.

{% hint style="success" %}
**Note for Umbraco Cloud users**

Umbraco Cloud supports External Identity Providers, including Entra ID (formerly Azure AD).\
If you're working on a Cloud project, see the [External Login Providers](https://docs.umbraco.com/umbraco-cloud/begin-your-cloud-journey/project-features/external-login-providers) article in the Umbraco Cloud documentation.

On Umbraco Cloud, Entra ID is configured via settings rather than custom code. So, this tutorial is intended for non-Cloud (on-premises or self-hosted) projects.
{% endhint %}

## Prerequisites

* A project with a setup for Members.
* Visual Studio, or another Integrated Development Environment (IDE).

## Step 1: Configure Entra ID

Before your applications can interact with Entra ID, they must be registered with a tenant that you manage. This can be either an Entra ID (Azure AD) tenant, or an Entra ID B2C (Azure AD B2C) tenant. For more information on creating an Azure AD B2C tenant, see [Microsoft's Tutorial: Create an Azure Active Directory B2C tenant](https://learn.microsoft.com/en-us/azure/active-directory-b2c/tutorial-create-tenant).

## Step 2: Install the NuGet package

You need to install the `Microsoft.AspNetCore.Authentication.MicrosoftAccount` NuGet package. There are two approaches to installing the packages:

1. Use your favorite Integrated Development Environment (IDE) and open up the **NuGet Package Manager** to search and install the packages.
2. Use the command line to install the package.

## Step 3: Implement the Entra ID Authentication

1. Create a new class for custom configuration options: `EntraIDB2CMembersExternalLoginProviderOptions.cs`.

{% code title="EntraIDB2CMembersExternalLoginProviderOptions.cs" lineNumbers="true" %}

```csharp
using Microsoft.Extensions.Options;
using Umbraco.Cms.Core;
using Umbraco.Cms.Web.Common.Security;

namespace MyApp;

public class EntraIDB2CMembersExternalLoginProviderOptions : IConfigureNamedOptions<MemberExternalLoginProviderOptions>
{
    public const string SchemeName = "ActiveDirectoryB2C";

    public void Configure(string? name, MemberExternalLoginProviderOptions options)
    {
        if (name != Constants.Security.MemberExternalAuthenticationTypePrefix + SchemeName)
        {
            return;
        }

        Configure(options);
    }

    public void Configure(MemberExternalLoginProviderOptions options)
    {
        // The following options are relevant if you
        // want to configure auto-linking on the authentication.
        options.AutoLinkOptions = new MemberExternalSignInAutoLinkOptions(

            // Set to true to enable auto-linking
            autoLinkExternalAccount: true,

            // [OPTIONAL]
            // Default: The culture specified in appsettings.json.
            // Specify the default culture to create the Member as.
            // It can be dynamically assigned in the OnAutoLinking callback.
            defaultCulture: null,

            // [OPTIONAL]
            // Specify the default "IsApproved" status.
            // Must be true for auto-linking.
            defaultIsApproved: true,

            // [OPTIONAL]
            // Default: "Member"
            // Specify the Member Type alias.
            defaultMemberTypeAlias: Constants.Security.DefaultMemberTypeAlias

        )
        {
            // [OPTIONAL] Callbacks
            OnAutoLinking = (autoLinkUser, loginInfo) =>
            {
                // Customize the Member before it's linked.
                // Modify the Members groups based on the Claims returned
                // in the external login info.
            },
            OnExternalLogin = (user, loginInfo) =>
            {
                // Customize the Member before it is saved whenever they have
                // logged in with the external provider.
                // Sync the Members name based on the Claims returned
                // in the external login info

                // Returns a boolean indicating if sign-in should continue or not.
                return true;
            }
        };
    }
}
```

{% endcode %}

2. Create a new static extension class called `MemberAuthenticationExtensions.cs`.

{% code title="MemberAuthenticationExtensions.cs" lineNumbers="true" %}

```csharp
namespace MyApp;

public static class MemberAuthenticationExtensions
{
    public static IUmbracoBuilder ConfigureAuthenticationMembers(this IUmbracoBuilder builder)
    {
        builder.Services.ConfigureOptions<EntraIDB2CMembersExternalLoginProviderOptions>();
        builder.AddMemberExternalLogins(logins =>
        {
            builder.Services.ConfigureOptions<EntraIDB2CMembersExternalLoginProviderOptions>();
            builder.AddMemberExternalLogins(logins =>
            {
                logins.AddMemberLogin(
                    membersAuthenticationBuilder =>
                    {
                        membersAuthenticationBuilder.AddMicrosoftAccount(

                            // The scheme must be set with this method to work for the external login.
                            membersAuthenticationBuilder.SchemeForMembers(EntraIDB2CMembersExternalLoginProviderOptions.SchemeName),
                            options =>
                            {
                                // Callbackpath: Represents the URL to which the browser should be redirected to.
                                // The default value is /signin-oidc.
                                // This needs to be unique.
                                options.CallbackPath = "/umbraco-b2c-members-signin";

                                //Obtained from the ENTRA ID B2C WEB APP
                                options.ClientId = "YOURCLIENTID";
                                //Obtained from the ENTRA ID B2C WEB APP
                                options.ClientSecret = "YOURCLIENTSECRET";

                                // If you are using single-tenant app registration (e.g. for an intranet site), you must specify the Token Endpoint and Authorization Endpoint:
                                //options.TokenEndpoint = $"https://login.microsoftonline.com/{tenantId}/oauth2/v2.0/token";
                                //options.AuthorizationEndpoint = $"https://login.microsoftonline.com/{tenantId}/oauth2/v2.0/authorize";

                                options.SaveTokens = true;
                            });
                    });
            });
        });
        return builder;
        });
    }
}
```

{% endcode %}

{% hint style="info" %}
Ensure to replace `YOURCLIENTID` and `YOURCLIENTSECRET` in the code with the values from the Entra ID tenant. If Entra ID is configured to use accounts in the organizational directory only (single tenant registration), you must specify the Token and Authorization endpoint. For more information on the differences between single and multi tenant registration, refer to [Microsoft's identity platform documentation](https://learn.microsoft.com/en-us/entra/identity-platform/howto-modify-supported-accounts).
{% endhint %}

4. Add the Members authentication configuration in the `Program.cs` file:

{% code title="Program.cs" lineNumbers="true" %}

```csharp
builder.CreateUmbracoBuilder()
    .AddBackOffice()
    .AddWebsite()
    .AddDeliveryApi()
    .AddComposers()
    //Add Members ConfigureAuthentication
    .ConfigureAuthenticationMembers()
    .Build();
```

{% endcode %}

{% hint style="info" %}
Are you building a package for Umbraco?

Then you will not have access to the `Program.cs` file. Instead you need to create a composer in order to register your extension method.

Learn more about this in the [Dependency Injection](https://docs.umbraco.com/umbraco-cms/reference/using-ioc) article.
{% endhint %}

5. Build the project.
6. Run the website.

![Entra ID Login Screen](https://2050077833-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fb0WSXUuM7Qx5BfREagAI%2Fuploads%2Fgit-blob-cca354a8a01fc08adefbd6bf18a7133a7cb2d2ed%2FAD_Login_Members%20\(1\)%20\(1\).png?alt=media)