If you absolutely need the original 3ds Max experience, apply for an or subscribe for one month ($235) for a professional project. It is a small price for peace of mind, legal safety, and a functional system.

To open or convert very old .max files that might not load correctly in newer versions. The Risks of "Free Portable" Downloads

Instead of risky portable versions, consider these official options: Autodesk 3ds Max 9 - 64bit - CGarchitect Forums

However, if you genuinely need 3ds Max 9 for a specific reason (e.g., opening a file from 2008 for a client):

To make a "portable" version, crackers and repackers use tools like , Cameyo , or Enigma Virtual Box . These tools virtualize the registry and file system, tricking the software into thinking it is installed. The result is a single executable folder.

If you find a "portable" version online, keep the following in mind: