Solution : https://service.sap.com/sap/support/notes/52967 (SAP Service marketplace login required)
Key words :
prerequisites incorrect tcp/ip configuration, symptom incorrect rfc connection setup, rfc client program, additional key words, <windir>/system32/drivers/, error text, trace file, 16-bit windows, - hostname 'xx, x' unknown
Related Notes :
| 25917 | Changes to /etc/hosts are not accepted. |