I have a custom STS implementation. Currently it is configured as an additional identity provider on Azure ACS. I have a relying party website that is authenticating successfully via ACS (Windows Live, Google, etc). However, whenever I try to login using my custom STS I always get the Error 401.
- Error Code ACS20001: An error occurred while processing a WS-Federation sign-in response.
- Error Code ACS50008: SAML token is invalid.
I have searched through the forums but in my case I dont get any more detail on the error and do not know how to proceed and fix this.
My STS is currently on beta and can be reached here: metadata .
If anyone has any suggestions or wants to give it a try please contact me via email and I will open a demo login on my custom provider.
note: The case is different than similar question found here since my inner exception details do not suggest any reason.
UPDATE: check the discussion in this thread for some additional informaton and the payloads I extracted from fiddler.
Thanks in advance,
Constantinos