Hi I'm new to this but I've figured out somethings about using the Ducky on Windows 10.
1) GUI didn't work but CTRL ESC did to open the windows start menu but not always if another window was selected.
2) to get to an administrative command prompt I found that using:
DEFAULT_DELAY 150
DELAY 300
CTRL ESC
STRING cmd.exe
MENU
DOWN
ENTER
seemed to get the job done.
I'm attaching the two scripts I wrote this evening.
GL
W10 open admin command.zip
MAKE ADMIN USER.zip