SAP Knowledge Base Article - Preview

1552600 - SPNEGO addon error: "Unsupported keysize or algorithm parameters"


Using the "Spnego add on" authentication fails with the following error:


The error above is from the webdiagtool, it captured the traces while the issue was being reproduced.

For more information on the webdiagtool see SAP note 1045019.



  • SAP J2EE Engine 6.40
  • SAP J2EE Engine 7.00
  • SAP J2EE Engine 7.01
  • SAP J2EE Engine 7.02
  • SAP J2EE Engine 7.10
  • SAP J2EE Engine 7.11

  • Product

    SAP enhancement package 1 for SAP NetWeaver 7.0


    Kerberos, encryption, AES, RC4 , KBA , BC-JAS-SEC-LGN , Logon, SSO , Problem

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