The Microsoft Azure AD B2C access management solution does not fully respect the OpenID Connect protocol. For this reason, additional configuration is necessary. Without additional configuration, the following error message appears when running the configuration assistant:
Authentification impossible
Missing JSON object member with key access_token
To complete the configuration, an ADMIN user must perform the following steps:
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In the New realm drawer, go to the Relying party metadata section and select the Callback URL button to copy the URL.
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In the Azure AD B2C application registration dashboard, paste the URL.
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In the Azure dashboard, copy the app ID.
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In the portal's realm configuration drawer, go to the OAuth 2.0 credentials section and paste the app ID in the Client ID field.
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Also paste the app ID in the Scopes section of the realm configuration drawer.
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In the Azure dashboard, copy the OIDC endpoint.
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In the New realm drawer, go to the Endpoints section and paste the endpoint in the Discovery document URL field.
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Select OK.
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Select Save.