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 ...

While the exact cause of this error is not known, it is worth checking if you have fulfilled all the system requirements for Java. If you are using a Windows system ...

Before we get started with the steps, first try and reinstall Minecraft to ensure there are no corrupt files causing issues. Make sure you save your worlds properly so you don't lose any progress.