The Things Windows Won't Let You Do

*ds of M$!

Anyhow, when you can't do (through Autohotkey)

Run rundll32.exe user32.dll,LockWorkStation

you can do :

Run C:\Tools\wizmo lock

https://www.grc.com/freepopular.htm (wizmo is powerful - with it, you can hibernate your PC through RDC - something I never could do before. Long live productivity!)

Another handy resource : https://www.autoitscript.com/forum/topic/21848-functions-in-user32dll/