How do I open a DLL file in Windows 10?

To run a DLL as an EXE on your computer, you need to use a command line.

1. Press the "Start" button and click "Run." Video of the Day.
2. Type the letters "cmd" into the "Run" dialogue box. …
3. Type this command line into the command prompt window,"RUNDLL. …
4. Press "Enter" to run a DLL as an EXE.