Скачать или смотреть How to Continue Azure B2C User Journey on Authentication Failure

Learn how to effectively handle authentication failures in Azure B2C, enabling a smoother user journey during account migration.
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Introduction: Facing Authentication Challenges in Azure B2C

When working with custom user journeys in Azure B2C's Identity Experience Framework, you may encounter several challenges. One common issue developers face is handling authentication failures. Specifically, if a user's login attempt fails, Azure B2C typically terminates the user journey, making it difficult to provide alternative paths for users in a just-in-time migration process from a legacy identity provider to Azure B2C. This guide will guide you through a solution to continue the user journey even after an authentication failure.

Understand the Problem

Let's break down the situation:

You are developing a custom user journey in Azure B2C to facilitate the migration of accounts from a legacy identity provider to B2C.

The desired flow includes an authentication attempt followed by a potential fallback if the authentication fails.

When the authentication fails, you want to check if the user's email is present in the legacy system and, if so, present them with a B2C signup form.

The question arises: Is it possible to continue the user journey when authentication fails?

Solution Overview

While continuing the user journey on full authentication failure is complex, there is an effective method to handle such situations by checking the existence of the user's account without performing authentication. Below, we’ll outline the steps and technical profile modifications needed.

1. Configuring the B2C Policy

You can achieve the desired flow by adjusting the registration policy in Azure B2C. Here’s how:

Modify Metadata: Set the RaiseErrorIfClaimsPrincipalDoesNotExist metadata to false. This adjustment allows the B2C policy to proceed without terminating the journey when the user is not found.

2. Validation Technical Profile Example

The following XML snippet provides a validation technical profile that checks the existence of a user's email address without throwing an error.

[[See Video to Reveal this Text or Code Snippet]]

3. Implementing the Flow

Attempt Authentication: First, verify the user's sign-in attempts with the B2C sign-in form.

Query Legacy System: On authentication failure, utilize the technical profile to query if the user's email is present in the legacy system.

Present Signup Form: If the user exists in the legacy system based on the email check, proceed to show a B2C signup form, enabling the user to create a new account seamlessly.

Conclusion

Handling authentication failures in Azure B2C doesn’t have to derail your user journey. By manipulating the technical profile settings and employing clever checks for legacy accounts, you can provide a robust user experience that guides users toward successful account migration. This strategy not only enriches your user journey but also encourages user retention during transitional phases.

If you have more questions or wish to share your experiences using Azure B2C, feel free to join the conversation in the comments below!