When you run a DOS program on a 32-bit Windows 10 OS, you will receive a popup to install NTVDM. If we talk about 64-bit Windows 11/10 OS, you cannot run DOS programs.

Some programs written for even older versions of Windows may work on Windows 10 without an issue. For other pieces of software, it may take some additional work to get it up and running.

Windows 10 S is a special configuration of Windows 10 that allows users to install only programs that are downloaded from the Microsoft Store and blocks access to many command-line tools.

How you install a program from an ISO image will vary depending on which version of Windows you use. Here’s how to install it in Windows 10 and 11.