Download the .zip archive and extract it. You will find two folders: win32 and win64 . Use the version that matches your system architecture.
To open the graphical installer, run the following command in an administrative command prompt: nssm install Use code with caution. use nssm to install a service | NSSM tutorial
NSSM offers both a graphical user interface (GUI) and a command-line interface (CLI) for creating services.