You can download the V-Ray 6 material library from the Chaos Group website:

: Once downloaded, these assets are stored locally (typically in \Documents\V-Ray Material Library\ ) and will work even if your internet connection is lost. 2. Manual Offline Installation (Legacy Method)

You can also find the shortcut in your Windows Start menu. Run as Administrator: Right-click mtllib.exe and select Run as Administrator . Specify the Download Directory: