If you have a legacy USB or DVD box set, the serial number is usually located on the back of the packaging or on a sticker inside the case. Step-by-Step Activation Guide
For newer subscription models, you might not even need a serial number; simply signing in with your Autodesk ID may activate the product automatically. autodesk autocad 2018 product key and serial number updated
If you are using a specialized version of AutoCAD, you will need a different key: AutoCAD Architecture 2018: AutoCAD Civil 3D 2018: 237J1 AutoCAD MEP 2018: 235J1 AutoCAD Map 3D 2018: 129J1 How to Find Your Serial Number If you have a legacy USB or DVD
Autodesk uses a two-step verification system for perpetual and subscription licenses: autodesk autocad 2018 product key and serial number updated
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