How to authentication external Identity providers from Power Pages via Azure B2C

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Posted on by CU09091932-0

Hello,

We are planning to configure power pages for B2C that uses Azure AD B2C for external identity and authentication and want to set up external identity providers like Google, Facebook, and so on inside Azure B2C instead of power pages identity provider.

Problem statement:

From power pages -> Azure B2C -> External identity provider (Not able to redirect to external provider)

able to login external identity provider via Azure B2C user flow but getting an error "Error 400: redirect_uri_mismatch" while login from power pages Azure B2C-> Google, Facebook..etc.

could you please let us know whether it's possible via power pages or not, if yes then please suggest how to do it.

please see the attached screenshot and let me know if more clarification needed. Thanks.

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SaiRT14 1,990 Super User 2025 Season 2 on at

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try the following summary of steps:

Register Power Pages in Azure AD B2C and set the correct redirect URI.

Configure external identity providers (Google, Facebook, etc.) in Azure AD B2C.

Ensure all redirect URIs are consistent between Power Pages and Azure AD B2C.

Test and debug to confirm that Azure AD B2C properly redirects to Power Pages after external authentication.

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