Are you using a or Windows machine for your library creation?
: For modern Kontakt versions (6 or higher), Native Instruments recommends their official Creator Tools suite for advanced instrument building. Are you looking to create a brand-new instrument from scratch, or are you just trying to fix a library that won't show up in your browser? kontakt library creator klc free download link
: It is frequently cited as a solution for resolving "No library found" errors by allowing users to regenerate the necessary library files (like .nicnt files). Are you using a or Windows machine for your library creation