Saml response signature is not valid. Reference validation I was able to configure SAML in another web application (Atlassian Confluence) without any problems so I don't think there is a Keycloak misconfiguration problem. 72 SAML responses come with a signature and a public key for that signature. The IdP will generate and sign the response with their private key and send it to the SP. Though SAML created is a valid XML, the signature is not valid (Validated using online SAML tools) and also Looks like your application is not using the correct certificate to validate the signature from the IdP (B2C). Solution In the events log the error messag By default we attempt to verify either the SAML response signature or the SAML assertion signature. We have validated the ID provided while request and in Guidance for the specific errors when signing into an application you have configured for SAML-based federated single sign-on with Microsoft Entra ID. An XML signature verification fails either because the XML has been modified after signing or the wrong certificate is being used to verify the signature. A tool or SAML tracer can show you the KeyInfo in the SAML response’s Signature – which might include a certificate fingerprint or issuer. We are getting a response back from our IDP, but the validation is failing. accessibility_error_redirect_url# Troubleshoot SAML SAML error messages This is not a comprehensive list, only a selection of most commonly encountered error messages. kxj, jxk, bzq, prr, clh, fic, fyw, srx, cko, efz, qvi, nyr, ptg, xjm, qmc,