SAP Knowledge Base Article - Preview

2417639 - "Logon not possible (error in license check)" error message when accessing a system using SAPGUI for Windows


The error message "Logon not possible (error in license check)" appears in SAPGUI for Windows after an authentication attempt.



  • Netweaver AS ABAP servers of all releases
  • CommonCryptoLib 8.4.41
  • SAPGUI for Windows


SAP NetWeaver Application Server for ABAP all versions


CommonCryptoLib, SAPCRYPTOLIB, SAP Logon, SAPGUI, SAP GUI, security, Logon, license, check, error, authentication, user, password, random,  , KBA , BC-IAM-SSO-CCL , CommonCryptoLib , BC-SEC-SSF , Secure Store and Forward , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.