Next time you open Kontakt 7:
Authorize Library (if necessary): Some libraries require authorization through Native Instruments' Service Center.
Kontakt 7 uses a new format: .nksn files store library metadata for the browser.
Place a file called <LibraryName>.nksn inside the library’s root folder with this structure:
"Type": 1,
"Name": "Your Library Name",
"Author": "Cracker/Team",
"ProductFamily": "Kontakt Library",
"Product": "Your Library Name",
"UUID": "12345678-1234-1234-1234-123456789abc",
"Version": "1.0",
"SoundInfo":
"BackgroundPath": "Pictures/Background.png"
You can generate a random UUID online. The .nksn tells Kontakt 7 to treat the folder as a “library.”