He double-clicked the installer. The User Account Control dialog popped up: "Do you want to allow this app to make changes to your device?"
Read and accept the End-User License Agreement (EULA). devexpress 2017 download install
You will see a list of available platforms (WinForms, WPF, ASP.NET Web Forms/MVC, Bootstrap, DevExtreme, Dashboard, and Reporting). He double-clicked the installer