Solution : https://service.sap.com/sap/support/notes/80474 (SAP Service marketplace login required)
Key words :
additional key words gateway autostart nt sservmgr, \\<host>\sapmnt\<sid>\sys\profile\start_g<##>, gateway instance <sid>_<##>, sap<sid>_<##>, start nt services, active = green light, sap service manager, <sid>_<##>, nt service, start profile
Related Notes :
202934 | RFCOSCOL for NT servers using a gateway |
85460 | |
82751 | Problems with SAP Services & SAP Service Manager |