No need SDK
Run notepad
Copy the command below and paste into notepad.
cmd.exe /C start shell:AppsFolder\Microsoft.FlightSimulator_8wekyb3d8bbwe!App -FastLaunch
Click File > Save as > save as type: all files
File name:
MSFS_fast_launch.cmd
Click save
Save location > Desktop
Right click on MSFS_fast_launch.cmd and select run as administrator.