I am trying to configure a SAML Integration with Azure AD B2C. I get AuthRequest has no assertion consumer service URL specified in metadata

Srinivas Mukund Chavali 6 Reputation points
2022-09-12T16:26:28.127+00:00

AADB2C99049: Application registered corresponding to IssuerUri "redacted*" in AuthRequest has no assertion consumer service URL specified in its metadata.
Any help, On which end configuration is needed . SP or IDP

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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  1. Akshay-MSFT 17,956 Reputation points Microsoft Employee Moderator
    2022-09-15T05:59:59.783+00:00

    Hello @Srinivas Mukund Chavali ,

    Thanks for posting your query on Q&A platform. I was able to review the error "AuthRequest has no assertion consumer service URL specified in metadata". Since the Auth request is missing the consumer service URL, we must define the Service provider/application meta data:

    • In the application manifest please ensure that SAML metadata URL is defined :

    241334-image.png

    • Once validated please ensure that ACS URL is defined in the metadata:

    241341-image.png

    -But if we don't have metadata URL then we need to Override or set the assertion consumer URL https://learn.microsoft.com/en-us/azure/active-directory-b2c/saml-service-provider?tabs=windows&pivots=b2c-custom-policy#override-or-set-the-assertion-consumer-url-optional

    Within SAML Application Manifest, you'd set the url property of replyUrlsWithType to the ASC URL as shown in the following JSON Example:

    "replyUrlsWithType":[
    {
    "url":"https://samltestapp2.azurewebsites.net/SP/AssertionConsumer",
    "type":"Web"
    }
    ],

    Thanks,
    Akshay Kaushik

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.


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