Modern Autodesk subscriptions often use "Sign In" activation, which may not require a serial number at all.
For many subscription types, the serial number is sent via email shortly after purchase. Troubleshooting Activation If your serial number and product key are not accepted: If the software is already installed, click your
Unlike product keys, which are the same for all users of a specific version, are unique to your individual license or subscription. If the software is already installed
If the software is already installed, click your account icon in the title bar and select Manage License . This will display your active license information, including the serial number. If the software is already installed, click your
If you purchased Inventor as part of an Industry Collection , you may need to use the specific key for that collection rather than the standalone product key.