A: It depends on your license. Single-user subscriptions allow installation on up to 3 devices, but only one can be used at a time. Network or multi-user licenses have different rules.
Autodesk no longer sells perpetual licenses for 3ds Max. You must subscribe monthly, annually, or every 3 years. Prices vary by region. Upon purchase, Autodesk emails your serial number and product key, visible in your Autodesk Account under “Products & Services.” autodesk 3ds max 2021 serial number and product key
Many users lose their original email. Here’s where to retrieve it: A: It depends on your license