- Download and install Live HTTP Headers (a Firefox add-on)
- Enable Live HTTP Headers from your browser (Tools>Live HTTPHeaders)
- Attempt the SSO between IDP and SP
- In LiveHTTPHeaders look for string labeled “SAMLResponse” and capture (copy) the entire string. This is a base64 and URLEncoded string.
Once you have captured the string:
- Browse over to SAML 2.0 Debugger and paste the SAML Response string into the window.
- Click on Decode
Good luck and let me know if you have any questions.