SAP Knowledge Base Article - Preview

3159859 - hostname unknown error on SAP GUI


When using logon groups settings for users connections, following error is displayed on SAP GUI when trying to login:

hostname '<...>' unknown
Check your application server name



SAP NetWeaver all versions


  • 2576243 - List of application server and logon group with full qualified hostnames
  • 129997 - Hostname and IP address lookup
  • 2263219 - Wrong Hostname in SM51
, KBA , BC-NET , Formerly used for network tests , BC-FES-GUI , SAP GUI for Windows , BC-CST-MS , Message Service , BC-CST-NI , Network Interface , BC-CST-LG , Logon group based load balancing , Problem

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