Autodesk Licensing Guide (.pdf) - Documentation & Online Help ...

Update Your Serial Number
You typically update your serial number for a stand-alone license when you
purchase a new license in order to change the license type or behavior. For
example, you would do this if you want to convert an educational license to
a commercial license, or if you want to extend the term of a term extendable
license. When you update a license, you do not need to uninstall and reinstall
the product. The new license includes a new serial number that you enter in
the Product License Information dialog box.
Your serial number is located on the outside of the product packaging or in
the Autodesk Upgrade and Licensing Information email you received when you
downloaded your product.
When you register and activate your product, your serial number is submitted
to Autodesk over the Internet, if a connection is available.
If you have a suite of products that use a single serial number, only the first
product you register and activate displays the updated serial number. For other
products to display the serial number, you must update them from the Help
menu.
To update your serial number
1 Start your Autodesk product.
2 Click Help ➤ About, or About [Product Name].
3 In the About window, click Product Information or Product License
Information.
4 In the Product License Information dialog box, click Update.
5 In the Update the Serial Number dialog box, enter your product serial
number.
NOTE If you have lost your serial number, go to www.autodesk.com/contactus
for assistance.
6 Click Activate. The updated serial number is displayed.
NOTE In some cases, you must restart the product to display the updated
serial number.
7 In the Product License Information dialog box, click Close.
Stand-Alone Licensing | 7