Synthage V11 is a third-party, independently developed library. It is not an official Native Instruments product. Because of this, it is often hosted on file-sharing sites rather than official stores. Be cautious of fake "download buttons" on these sites.
If you're interested in downloading Synthage V11, ensure you have a stable internet connection and sufficient disk space (the library requires around 10 GB of free space). synthage v11 kontakt library download better