This is completely ridiculous. Windows 10 has been out for more than what, 3 years at this point? It is unacceptable that my launcher won't open purely because I have Windows 10 installed. I just want to play the game that I like and use the weapons that I spent money on WITHOUT having to restart my computer in clean mode, something that I'm not sure I'll even be able to do because I disabled secure boot to install drivers on Linux. This is completely stupid and Nexon are LYING if they say that they cannot fix this.
Edit: At least let me launch the game from it's installation folder again.