https://www.bleepingcomputer.com/news/microsoft/using-the-windows-sandbox-to-stay-safe-online/ > One of the more interesting features of Windows 10 version 1903, otherwise known as the May 2019 Update, is the Windows Sandbox. The Windows Sandbox is a Windows 10 virtual machine that can be quickly launched so you can test downloaded programs,browsers extensions, and suspect sites without risk of infecting your normal Windows operating system. > For those who are security conscious and do not want to deal with installing a dedicated virtual machine program like VirtualBox, Hyper-V, or VMWare, you can instead install Windows Sandbox for a very basic Windows 10 virtual machine.