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.

If Java is not recognized as internal or external command, you need to make sure that the installation is not problematic and its path is recognized as system variables.

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 ...

One of the computers here is giving this message when trying to ftp at the command line. It's running a fresh install of Windows NT4 sp6a. I've checked and the path in environmental variables is ...