Configure your App Service or Azure Functions app to use Facebook sign-in

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This article shows how to configure Azure App Service or Azure Functions to use Facebook as an authentication provider.

To complete the procedure in this article, you need a Facebook account that has a verified email address and a mobile phone number. To create a new Facebook account, go to facebook.com.

Register your application with Facebook

To register your application with Facebook:

1. Go to the Facebook Developers website, and sign in with your Facebook account credentials.

   If you don't have a Facebook for Developers account, select Get Started and follow the registration steps.

2. On the My Apps page, select Create App.

3. In the resulting window, select Create app again.

4. In App name, enter a unique name for your app, and then select Next.

5. On the Use cases tab, select Authenticate and request data from users with Facebook Login, and then select Next.

6. On the Business tab, select I don't want to connect to a business portfolio yet, or create or select a portfolio, and then select Next.

7. On the Requirements tab, select Next.

8. On the Overview tab, select Create app.

9. Enter the password for the Facebook account.

   The developer dashboard for your new Facebook app opens.

10. Select the arrow next to App customization and requirements.

11. In the left pane, under Facebook Login, select Settings.

12. In Valid OAuth redirect URIs, enter https://<app-name>.azurewebsites.net/.auth/login/facebook/callback. Replace <app-name> with the name of your App Service or Functions app.

13. Select Save changes.

14. In the left pane, select App settings > Basic.

15. In App Secret, select Show. Copy the values of App ID and App Secret. You use them later to configure your App Service or Functions app in Azure.

    Important

    The app secret is an important security credential. Don't share this secret with anyone or distribute it within a client application.

16. The Facebook account that you used to register the application is an administrator of the app. At this point, only administrators can sign in to this application.

    To authenticate other Facebook accounts, you need to publish the app.

Add Facebook information to your application

Next, add Facebook information to your application:

1. Sign in to the Azure portal and go to your app.

2. In the left pane, under Settings, select Authentication. Select Add identity provider.

3. Select Facebook in the identity provider list. Paste in the app ID and app secret values that you obtained previously.

   The secret is stored as a slot-sticky application setting named FACEBOOK_PROVIDER_AUTHENTICATION_SECRET. You can update that setting later to use Key Vault references if you want to manage the secret in Azure Key Vault.

4. If this identity provider is the first one configured for the application, you're also prompted with an App Service authentication settings section. Otherwise, you can go to the next step.

   These options determine how your application responds to unauthenticated requests. The default selections redirect all requests to sign in with this new provider. You can change this behavior now or adjust these settings later from the main Authentication screen by selecting Edit next to Authentication settings. To learn more about these options, see Authentication flow.

5. (Optional) Select Next: Scopes and add any scopes needed by the application. These scopes will be requested at sign-in time for browser-based flows.

6. Select Add.

You're now ready to use Facebook for authentication in your app. The provider is listed on the Authentication screen. From there, you can edit or delete the provider configuration.