Since Minecraft Java Edition relies heavily on the Java platform, corrupted or mismatched Java files can lead to crashes. Reinstalling the Java runtime environment can help resolve the issue.

The Internal Exception Java.IO.IOException error usually occurs when you launch Minecraft, or when the game is underway. This error can be caused by a number of different things.

Minecraft players who are using an outdated version of Java will be greeted with this message How can players fix the JNI Error?