Now I am trying to reinstall Revit 2017, 2018, and 2019 but the only version showing on my Autodesk Account page is 2019. If you’ve lost or can’t find the product key, contact the manufacturer. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. In the meantime I've had a Windows update corrupt my Win10 installation and have had to reinstall the OS. Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. The product keys for Autodesk 2014 products (listed alphabetically) are as follows: Product Name. As I have retired effective 1/1/19 I let my Autodesk BDSP subscription expire. In the meantime I've had a Windows update corrupt my Win10 installation and have had to reinstall the OS. 3.Use as Product Key (Given above Select matching to your product) 4.Finish the installation & restart Autodesk Product. Entering an incorrect product key will result in activation errors for that product. 1 Downloading previous versions of BDSP June 8, 2019, 06:30 PM As I have retired effective 1/1/19 I let my Autodesk BDSP subscription expire. 2018 Product keys are required for installation of Autodesk products and are used to differentiate products that are both sold independently and as part of a product suite. 2.Use as Serial 666-69696969, 667-98989898, 400-45454545 066-66666666.