"The form is missing the variable SAMLResponse" Error

SAML for ASP.NET
1

Hi, I am new to SSO (as well as ComponentSpace) so would need some help to identify the error that I am getting. The following is the debug log from componentSpace, can anyone please tell me what causes the error?

ComponentSpace.SAML2 Verbose: 0 : 9:58:05 PM: Missing form variable SAMLResponse
ComponentSpace.SAML2 Verbose: 0 : 9:58:05 PM: Exception: ComponentSpace.SAML2.SAMLBindingException: The form is missing the variable SAMLResponse
ComponentSpace.SAML2 Verbose: 0 : 9:58:05 PM: Exception: ComponentSpace.SAML2.SAMLBindingException: Failed to receive response over HTTP POST. —> ComponentSpace.SAML2.SAMLBindingException: The form is missing the variable SAMLResponse
at ComponentSpace.SAML2.Bindings.HTTPPostBinding.GetFormVariables(HttpRequestBase httpRequest, String messageFormVariableName, XmlElement& samlMessage, String& relayState)
at ComponentSpace.SAML2.Bindings.HTTPPostBinding.ReceiveResponse(HttpRequestBase httpRequest, XmlElement& samlMessage, String& relayState)
— End of inner exception stack trace —
ComponentSpace.SAML2 Verbose: 0 : 9:58:05 PM: Exception: ComponentSpace.SAML2.SAMLProfileException: Failed to receive SAML response by HTTP post —> ComponentSpace.SAML2.SAMLBindingException: Failed to receive response over HTTP POST. —> ComponentSpace.SAML2.SAMLBindingException: The form is missing the variable SAMLResponse
at ComponentSpace.SAML2.Bindings.HTTPPostBinding.GetFormVariables(HttpRequestBase httpRequest, String messageFormVariableName, XmlElement& samlMessage, String& relayState)
at ComponentSpace.SAML2.Bindings.HTTPPostBinding.ReceiveResponse(HttpRequestBase httpRequest, XmlElement& samlMessage, String& relayState)
— End of inner exception stack trace —
at ComponentSpace.SAML2.Bindings.HTTPPostBinding.ReceiveResponse(HttpRequestBase httpRequest, XmlElement& samlMessage, String& relayState)
at ComponentSpace.SAML2.Profiles.SSOBrowser.ServiceProvider.ReceiveSAMLResponseByHTTPPost(HttpRequestBase httpRequest, XmlElement& samlResponse, String& relayState)
— End of inner exception stack trace —

Many thanks,
Carl

2

Hi Carl
The SAML response is encoded as the SAMLResponse form variable/post data and sent in an HTTP Post. The error indicates that the HTTP request you are receiving doesn’t include the expected SAML response.
If you take a look in the SAML log, just prior to the log entries you provided, you should see the raw HTTP request. This might give some clue as to what is going wrong.
If you need assistance, please email the entire SAML log as an email attachment to support@componentspace.com mentioning this topic and we can take a closer look.