An internal command is available in Windows and usually works from Windows Terminal or Command Prompt. External commands, on the other hand, are not dependent on system variables or the OS.

This command will show the installed version of Node.js if the PATH is set correctly. How to Fix the 'npm' is not recognized as an internal or external command Error ...

Here are the three easiest ways to fix Java’s “not recognized as an internal or external command” error: Install or reinstall Java and the JDK on your computer Add Java’s bin directory to the computer ...