# Not able to decode Autho IDP saml response **URL:** \ **Category:** Get Help\ **Tags:** idp, saml2, saml\ **Created:** [January 30, 2018, 5:10pm UTC](https://community.auth0.com/t/not-able-to-decode-autho-idp-saml-response/9337 "2018-01-30T17:10:09Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![sajidchamp55](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/User_font_awesome.svg/768px-User_font_awesome.svg.png) [@sajidchamp55](https://community.auth0.com/u/sajidchamp55)\ **Post date:** [January 30, 2018, 5:10pm UTC](https://community.auth0.com/t/not-able-to-decode-autho-idp-saml-response/9337/1 "2018-01-30T17:10:09Z")
I am using auth0 as just the idp , my service provider gives me this error message after getting the saml response : User authentication service auth0: Failed to process SAML Response: Unable to decode base64 in POST binding message. ---
**Author:** ![richard.dowinton](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/richard.dowinton/32/16150_2.png) [@richard.dowinton](https://community.auth0.com/u/richard.dowinton)\ **Post date:** [March 5, 2018, 12:40pm UTC](https://community.auth0.com/t/not-able-to-decode-autho-idp-saml-response/9337/2 "2018-03-05T12:40:00Z")
Which service provider are you using? Are you able to share the SAML response here with any sensitive details removed? This would help greatly in diagnosing the problem. ---
**Author:** ![konrad.sopala](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/konrad.sopala/32/13516_2.png) [@konrad.sopala](https://community.auth0.com/u/konrad.sopala)\ **Post date:** [July 25, 2019, 11:03am UTC](https://community.auth0.com/t/not-able-to-decode-autho-idp-saml-response/9337/3 "2019-07-25T11:03:52Z")