I installed Native Access 2 and Kontakt 7, and clicked "Open" below the Kontakt part:
It changed to "Opening…":
Then nothing happened, it's turned back:
When I try to open Kontakt from start menu, the mouse cursor starts rolling, then nothing happens…
I tried all of these methods, but they don't work: https://support.native-instruments.com/hc/en-us/articles/115004169849-Kontakt-Crashes.