Solution : https://service.sap.com/sap/support/notes/1227928 (SAP Service marketplace login required)
Key words : 
case fails press, download zip archive, browser window open, nwdi related traces, diagtool window 11, diagtool window 13, collect traces, downloaded traces, experiencing errors, terms diagtool
Related Notes : 
       
| 1321831 | General considerations when opening a NWDI support message | 
| 1045019 | |
| 889038 | Collective note: NWDI server component configuration |