Product keys are necessary for the installation of Autodesk products. They differentiate between standalone products and those that are part of a suite. For Revit 2019, the most common keys include: 829K1 Revit LT 2019: 828K1 Autodesk Building Design Suite Premium: 765K1
Improved "OR" conditions in view filters for more precise control over visibility.
Stealing your login credentials for banking or professional email.
If you are a student, educator, or a small business, there are legitimate ways to use Revit without risking your security.
New tools for detailed steel modeling and connections directly within the Revit environment. Understanding Revit 2019 Product Keys