Go to File > Import > FBX . Ensure you select "Image Search" in the import settings to automatically link the decrypted textures.
Decrypting KN5 files requires specialized tools and software, as well as a good understanding of the file format and encryption used. While this guide provides a step-by-step approach to decrypting KN5 files, it's essential to be aware of the challenges and limitations involved. If you're not comfortable with the process or don't have the necessary expertise, it's recommended that you seek professional help or use alternative methods to access the data you need.
If Content Manager's built-in tool does not work, third-party utilities can convert .kn5 to common 3D formats: