Rainbow Six Launcher for Diskless

 1. Create new batch file and paste this code into it, rename it as Rainbowsix_registry.bat and place it inside Ubisoft folder :

@echo off reg export HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Ubisoft uplay.reg /y exit

2. Create new batch file and paste this code into it, rename it as Rainbowsix_launcher.bat and place it inside Ubisoft folder :

@echo off regedit /s uplay.reg mklink /J "C:\Program Files (x86)\Ubisoft" %~dp0 start "" "D:\Steam\Steam.exe" -applaunch 359550 -noverifyfiles -cafeapplaunch exit
If you experiencing error when try to log in to uplay  like this : "Connection lost, a Ubisoft service is currently unavailable", install these certificates to your windows in Trusted Root Certification Authorities : Uplay Certificates