Generate a Request Code After you install your software, you can use it on a trial basis until you receive your Activation Code from Autodesk. To generate a request code to activate your software: Disable your Internet connection and launch your software. This is an offline process. The screens below only appear if your computer is not connected to the Internet. Autodesk software products operate on a Free Trial license until activated. If you purchased your software and didn't use it as a Free Trial, you still need to activate your software from the Free Trial screen. Enter your Serial Number and Product Key. Select Request an activation code using an offline method. Record the Autodesk Inventor LT 2017 Codigo De Activacion information provided.