Some users are unable to login via Multi-Provider SSO 'Logout successful and could not validate SAML response'Issue Some users are unable to login via Multi-Provider SSO 'Logout successful and could not validate SAML response'Error: SAML2: Failed to validate signature profile. CauseSAML Response from the IdP ( Identity Provider) contains attribute with new line (\n).Example below shows Address Attribute in new line(\n) <saml2:AttributeStatement><saml2:Attribute Name="streetAddress"><saml2:AttributeValue><AttributeValue>9999 S. IH99993rd Floor NW-XXX</AttributeValue></saml2:AttributeValue></saml2:Attribute></saml2:AttributeStatement>ResolutionRemove the attribute mapping which contains new line (\n) in the IdP (Identity Provider). Once removed the SAML Response no longer contains the attribute with new line (\n). OR Make sure the attribute value is in a single line. Related LinksAddress is the only field in ADFS, that allows Multi line text to be defined. (Active Directory Federation Services (ADFS) is a Single Sign-On (SSO) solution)