: If you have a legacy license, sign in to your Autodesk Account and use the Autodesk Assistant (bottom-right corner) to request a specific download for a 2015 product.
While "Autodesk MBX" is likely a typo for or Autodesk FBX , the 2015 version of these tools is a legacy release designed for professional 3D sculpting and animation. Downloading Autodesk 2015 Software (64-bit) autodesk-mbx-2015-64bit-free-download
How do I download Maya 2015 while having Maya 2018 on my PC? : If you have a legacy license, sign