Invalid SAML Assertion 13 – WebEx SSO

Error “invalid SAML Assertion 13” could mean your Cisco WebEx AuthnContextClassRef (authentication context class reference) doesn’t match your SAML assertion (ADFS response)

Windows integrated authentication (ADFS)

Password Protected Transport (ADFS Proxy)

If you have both ADFS and ADFS proxy servers you can enter both authentication context classes in the WebEx Federated Web SSO Configuration AuthnContextClassRef field separated by a semicolon.