If you lost your serial number: Contact Autodesk Support directly. They can locate old purchases via your email or company VAT number.
. Note that the Education Community typically provides access to the most recent versions rather than decade-old releases like 2016. 4. Troubleshooting Common Errors 3DS Max 2016 Network install. How? - Autodesk Community 3ds Max 2016 Activation Code
: Autodesk offers free trials for its software, including 3ds Max. This is a good option to test the software before committing to a purchase. If you lost your serial number: Contact Autodesk
Q: How do I resolve activation issues with 3ds Max 2016? A: Check your activation code, internet connection, and license limits, and contact Autodesk support if issues persist. Note that the Education Community typically provides access
If you have a valid .edu email, Autodesk provides free one-year access to all software, including 3ds Max 2016 (still available via the Education Community).