mod_auth_mellon fails to communicate with Microsoft Active Directory Federation Services (ADFS)

Solution In Progress - Updated -

Issue

  • Active Directory Federation Services login fails with Lasso error -432

  • The following error is seen in Apache httpd's error_log

    [date] [:error] [pid] [client ip:port] Error processing authn response. Lasso error: [-432] Status code is not success, referer: [https-url]

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Windows Server 2012 R2
  • Microsoft Windows Active Directory Federation Services
  • Apache httpd
  • mod_auth_mellon

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