Because Kontakt 5.6.6 is legacy software, it has strict compatibility limits with modern macOS versions. Operating System Compatibility Status Officially supported and highly stable. macOS 10.13 - 10.14 Generally compatible via legacy installers. macOS 10.15 (Catalina)

This specific version is often sought by producers maintaining older Mac systems or those using specialized scripts.

for Mac remains a pivotal legacy version of Native Instruments' flagship sampler. Released in February 2017 , this update became a "must-have" for many users due to the return of popular UI features and critical stability fixes. Why Kontakt 5.6.6 is Significant