SAML SSO 400 Error 'action' parameter must be specified

[Caleb.Ardern]

Hello,

I have configured my service provider as per the following config. 
SAML Authentication - 4.4.x Documentation - AppDynamics Documentation

Below is the error i get. The weird thing is there is no 'action' parameter meant to exist in the SAML 2.0 protocol

HTTP Status 400 - 'action' parameter must be specified

type Status report

message'action' parameter must be specified

descriptionThe request sent by the client was syntactically incorrect.

AppDynamics

[Ryan.Paredez]

Hi @Caleb.Ardern,

Thanks for your post on the community. I see you were looking at 4.4x documentation, here is a newer version of that document.  https://docs.appdynamics.com/display/PRO45/Configure+Basic+SAML+Authentication

Please follow backup if you experience a different outcome with the latest documentation.

[Mario.Morelli]

Hi Caleb

Could you provide some more info around what you are setting up..

1. What SAML Provider are you using, Azure Ad etc.?

2. Can you document a step by step setup procedure you followed?

3. I am assuming you are getting that error, after authenticating with your SAML IdP, when the IDP provider posts back the response to AppDynamics?

TO check this, you can install a SAML tracing extension in your browser, and then you can have a look at what SAML posts are being generated, that will significantly help in understanding where the problem is.