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Expand Up @@ -21,7 +21,7 @@ description: Learn how to allow users to sign up and sign in to your Clerk app w
- Protect your app from [the nOAuth exploit](https://www.descope.com/blog/post/noauth).
</TutorialHero>

Enabling OAuth with Microsoft Azure Entra ID (formerly [Active Directory](https://learn.microsoft.com/en-us/entra/fundamentals/new-name)) allows your users to sign up and sign in to your Clerk application with their Microsoft account.
Enabling OAuth with Microsoft Azure Entra ID (formerly [Active Directory](https://learn.microsoft.com/en-us/entra/fundamentals/new-name)) allows your users to sign up and sign in to your Clerk app with their Microsoft account.

## Configure for your development instance

Expand Down Expand Up @@ -50,89 +50,89 @@ To configure your production instance, follow these steps:
1. On the homepage of the [Microsoft Azure portal](https://portal.azure.com/#home), in the **Azure services** section, select **[Microsoft Entra ID](https://portal.azure.com/#view/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/~/Overview)**.
1. In the sidebar, under **Manage**, select **[App registrations](https://portal.azure.com/#view/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/~/RegisteredApps)**.
1. Select **New Registration**. You'll be taken to the **Register an application** page.
1. Fill out the form as follows:
1. Under **Name**, name the app whatever you'd like. "Clerk Demo App", for example.
1. Select **New Registration**. You'll be redirected to the **Register an application** page.
1. Complete the form as follows:
1. Under **Name**, name your app.
1. Under **Supported account types**, select **Accounts in any organizational directory (Any Microsoft Entra ID tenant – Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)**.
1. Under **Redirect URI (Optional)**, select **Web**.
1. Finally, select **Register** to submit the form.
1. Select **Register** to submit the form.

### Get your client ID and client secret

Once your Microsoft Entra ID app is created, or once you select your app from the Microsoft Azure portal, you'll be taken to its **Overview**.
Once your Microsoft Entra ID app is created, or once you select your app from the Microsoft Azure portal, you'll be redirected to its **Overview**.

1. From your app's overview, copy the **Application (client) ID** and save it somewhere secure. It's required for connecting your Microsoft Entra ID app to your Clerk app.
1. On this same page, under **Client credentials**, select **Add a certificate or secret** to generate a Client Secret. You'll be taken to the **Certificate & secrets** page.
1. From your app's overview, copy the **Application (client) ID** and save it securely. You'll need it to connect your Microsoft Entra ID app to your Clerk app.
1. Under **Client credentials**, select **Add a certificate or secret** to generate a Client Secret. You'll be redirected to the **Certificate & secrets** page.
1. Select **New client secret**. In the modal that opens, add a description and set an expiration time for your secret.
> [!IMPORTANT]
> When your secret expires, your social connection will stop working until you generate a new client secret and add it to your Clerk app.
1. Copy your new client secret's **Value** and save it somewhere secure. You'll add it to your Clerk app later, alongside your client ID.
1. Leave this tab open.
1. Copy your new client secret's **Value** and save it securely. You'll add this and your client ID to your Clerk app later. Keep this page open.

### Connect your Entra ID app and get your redirect URI

1. Navigate to the [Clerk Dashboard](https://dashboard.clerk.com/last-active?path=user-authentication/sso-connections).
1. In the top navigation, select **Configure**. Then in the sidebar, select **SSO Connections**.
1. Select **Add connection**, and select **For all users**.
1. In the Clerk Dashboard, navigate to the [**SSO Connections**](https://dashboard.clerk.com/last-active?path=user-authentication/sso-connections) page.
1. Select **Add connection** and select **For all users**.
1. In the **Choose provider** dropdown, select **Microsoft**.
1. Ensure that both **Enable for sign-up and sign-in** and **Use custom credentials** are toggled on. Then:
- Under **Client ID**, add the value you copied from **Application (client) ID** in the Microsoft Azure portal.
- Under **Client Secret**, add the client secret value you generated in the Microsoft Azure portal.
- Copy the **Authorized redirect URI**. You need it for the final step to configure your Entra ID app.
- Under **Client Secret**, add the client secret value you generated.
- Copy the **Authorized redirect URI**. You'll need it for the final step to configure your Entra ID app.
- Select **Add connection**.

### Enable OpenID

To connect your Clerk app to your Microsoft app, you must set the **Authorized redirect URI** in your Microsoft Azure portal.
To connect your Clerk app to your Microsoft app, set the **Authorized redirect URI** in your Microsoft Azure portal.

1. Return to the tab where your Microsoft Azure portal is open.
1. In the sidebar, under **Manage**,select **Authentication**.
1. Navigate back to the Microsoft Azure portal.
1. In the sidebar, under **Manage**, select **Authentication**.
1. Select **Add a platform**.
1. Select **Web**.
1. In the **Redirect URIs** field and the **Front-channel logout URL** field, add the **Authorized redirect URI** you copied in the previous step.
1. In the **Redirect URIs** field and the **Front-channel logout URL** field, add the **Authorized redirect URI** you copied earlier.
1. Under **Implicit grant and hybrid flows**, check both **Access tokens** and **ID tokens**.
1. Select **Configure** to save the changes.

### Test your OAuth

The simplest way to test your OAuth is to visit your Clerk app's [Account Portal](/docs/customization/account-portal/overview), which is available for all Clerk apps out-of-the-box.

1. In the navigation sidebar of the Clerk Dashboard, select [**Account Portal**](https://dashboard.clerk.com/last-active?path=account-portal).
1. In the Clerk Dashboard, navigate to the [**Account Portal**](https://dashboard.clerk.com/last-active?path=account-portal) page.
1. Next to the **Sign-in** URL, select **Visit**. The URL should resemble:
- **For development**`https://your-domain.accounts.dev/sign-in`
- **For production**`https://accounts.your-domain.com/sign-in`
1. On the sign-in page, you should see **Microsoft** as an option. Use it to sign in with your Microsoft account.

- **For development**`https://your-domain.accounts.dev/sign-in`
- **For production**`https://accounts.your-domain.com/sign-in`

1. Sign in with your Microsoft account.

### Secure your app against the nOAuth vulnerability

[nOAuth](https://www.descope.com/blog/post/noauth) is an exploit in Microsoft Entra ID OAuth apps that can lead to full account takeovers via email address spoofing. To protect users, Clerk enforces stricter checks on verified email addresses.
[nOAuth](https://www.descope.com/blog/post/noauth) is an exploit in Microsoft Entra ID OAuth apps that can lead to account takeovers via email address spoofing. Clerk mitigates this risk by enforcing stricter checks on verified email addresses.

For further security, Microsoft has an optional `xms_edov` claim, which provides additional context to that can be used to determine whether the returned email is verified.
For further security, Microsoft offers an optional `xms_edov` claim, which provides additional context to determine whether the returned email is verified.

To enable this optional claim, you must:

1. Navigate to your Azure application in the Microsoft Azure portal.
1. In the Microsoft Azure portal, navigate to your app.
1. In the sidebar, select **Token configuration**.
1. Select **Add optional claim**.
1. For the **Token type**, select **ID**. Then, in the table that opens, enable the `email` and `xms_pdl` claims.
1. At the bottom of the modal, select **Add**. A modal will open asking you to **Turn on the Microsoft Graph email permission**. Enable it, then select **Add** to complete the form.
1. At the bottom of the modal, select **Add**. A new modal will prompt you to turn on the Microsoft Graph email permission. Enable it, then select Add to complete the form.
> [!NOTE]
> At the time of writing, the `xms_edov` claim is still in preview, and may not be available for all apps. We'll choose another one from the list and we'll rename it later on in the manifest.
1. Repeat the previous steps, but for the **Token type**, select **Access** instead of **ID**. When you're done, the list of **Optional claims** on this page should have two claims for `email` and two for `xms_pdl`: one each for **ID** and **Access**.
> At the time of writing, the `xms_edov` claim is still in preview and may not be available for all apps. We'll choose another claim and rename it in the manifest later.
1. Repeat the previous steps for **Token type**, but select **Access** instead of **ID**. The **Optional claims** list should now show two claims for `email` and two for `xms_pdl`: one each for **ID** and **Access**.
1. In the sidebar, go to **Manifest**.
1. In the text editor, search for `"acceptMappedClaims"` and change its value from `null` to `true`.
1. Search for `"optionalClaims"` where you'll find the `idToken` and `accessToken` arrays. Each array has an object with the name `xms_pdl`. Change the name to `xms_edov`.
1. In the text editor, search for `"acceptMappedClaims"` and set its value from `null` to `true`.
1. Search for `"optionalClaims"`, where you'll find the `idToken` and `accessToken` arrays. Each array has an object with the name `xms_pdl`. Change the name to `xms_edov`.
1. At the top of the page, select **Save**.
1. In the sidebar, navigate back to **Token configuration** and confirm that the list of **Optional claims** includes two claims for `email` and two for `xms_edov`: one each for **ID** and **Access**.
1. In the sidebar, navigate back to **Token configuration** and confirm that the **Optional claims** list includes two claims for `email` and two for `xms_edov`: one each for **ID** and **Access**.

With these steps complete, Microsoft will send the `xms_edov` claim in the token, and Clerk will use it to determine whether the email is verified or not, even if it is used with Microsoft Entra ID.
With these steps complete, Microsoft will send the `xms_edov` claim in the token, which Clerk will use to determine whether the email is verified, even when used with Microsoft Entra ID.
</Steps>

## Limitations

- Currently Clerk supports only the `common` tenant type, which is intended for allowing sign-ins both from organization members and public Microsoft users.
- Selecting the desired tenant type (`common`, `organizations`, `consumers` or specific tenant ID) will become available in an upcoming version of Clerk.
- Only credentials of type `secret` are currently supported (not the `certificate` type).
- Currently, Clerk supports only the `common` tenant type, which allows sign-ins both from organization members and public Microsoft users.
- The option to selecting the desired tenant type (`common`, `organizations`, `consumers` or specific tenant ID) will be available in an upcoming version of Clerk.
- Only credentials of type `secret` are supported (not the `certificate` type).

> [!TIP]
> If you are using [SAML with Microsoft](/docs/authentication/saml/azure), the different tenant types _are_ supported and you can disregard these limitations.
> If you're using [SAML with Microsoft](/docs/authentication/saml/azure), the different tenant types _are_ supported, and you can disregard these limitations.

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