Here is where 90% of people mess up the "ultimate install."
Run the downloaded executable. It typically installs as a standalone application on Windows or macOS. ultimate kontakt library manager install
(often scripts or unofficial standalone apps) used to bypass Native Access and force-add unsupported, custom, or cracked sample libraries directly into the Native Instruments Kontakt sidebar? Native Access , which is the actual, official software provided by Native Instruments Here is where 90% of people mess up the "ultimate install