[xXNightEagleXx]

By launching osi.exe i saw that it was opening a command prompt window and closing it. So I opened one by myself and run the osi.exe to see if was returning any error message and so it was

2015-11-06 15:21:25 [2540] [INFO ] : Auto dumper init

2015-11-06 15:21:25 [2540] [FATAL ] : You must pass -seqnum to the osi

UPDATE: i guess this isn't important, however the laucher_log shows

[ 2804] 2015-11-06 15:47:52 [ 4648] ERROR Process.cpp (118) Failed to start exe C:/Program Files (x86)/Ubisoft/Ubisoft Game Launcher/data/3/osis/13/osi.exe workdir C:/Program Files (x86)/Ubisoft/Ubisoft Game Launcher/data/3/osis/13/ error=740
[ 2804] 2015-11-06 15:47:52 [ 4648] ERROR OrbitGameConnectionHandler.cpp (462) Failed to start osi.exe
[ 2804] 2015-11-06 15:47:52 [ 2760] INFO OrbitGameConnectionHandler.cpp (538) Get OSI failed due to connection failed. Retrying in 25 seconds.


UPDATE 2 : There is no way to make it work, i'm starting to think that i have to open a port, but which one?

UPDATE 3: Solved! Although i had no error message i couldn't make it work until i launched the launcher using administrative rights XD