You open an email, download a beautiful model, try to open it in 3ds Max 2022, and boom— "File was saved in a later version of 3ds Max and cannot be opened." You need a 2024 file opened in 2019. Without the newer version installed, you are stuck.
You cannot directly convert a native .MAX file to an older native .MAX file online for free with full fidelity, but you can convert it to FBX or OBJ using AnyConv, Convertio, or Zamzar, then import it into your older 3ds Max — which works for geometry and textures. Convert 3ds Max File To Older Version Online
However, emerging cloud-based 3D platforms like , Sketchfab (now Epic Games), and Verge3D allow you to upload a high-version .MAX and export low-version .FBX or .GLTF seamlessly. These are not "MAX to older MAX" but they are the closest legal workaround. You open an email, download a beautiful model,