Maybe i am stupid, but how can i start an installed application in Native Access? I installed RX 11 Elements - in Installation Paths is just an deinstall.exe Thanks
RX 11 Elements are plugins, not applications.
You open them through other software, usually through your DAW (Cubase, Ableton, Logic, Studio 1 etc etc), or through other NI applications (Maschine, Komplete Kontrol) or with any other compatible audio software that support plugins (almost all audio software support plugins).
In the case of RX, the Advanced (full) version has an application too (an audio editor), but not the Elements (basic) version.
Note: For better understanding the difference between an application and a plugin, check this article:
https://www.quora.com/Whats-the-difference-between-a-plugin-and-an-app