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Then type sysdm.cpl in it and press Enter. Step 1: Press the Win + R key to open the Run dialog box. In this case, you can fix the problem by visiting the System Properties screen and modifying the environment variables in a way that removes the Java environment variables. If the first method doesn’t work, then this “a JNI error has occurred Minecraft” error is due to a corrupted system path variable for Java. Read More Solution 2: Remove Broken System Path Variables for Java You can complete the installation of Java’s latest version of Minecraft by following these steps: To fix this, you just need to update your current Java to the latest version. This a JNI error has occurred Minecraft server error occurs when you try to start Minecraft or a Minecraft server on a PC that does not have the latest version installed. Solution 1: Install the Latest Java Version Whatever the cause of this problem, the solutions below will help you fix it in no time.

The corrupted system path for Java: The system variable path for Java is corrupted and tricks the Minecraft launcher into thinking that Java is not actually installed on your PC.

However, this is not the case with the latest Minecraft update, which now requires Java to get up and running properly.

The version of Java is old: Previous versions of Minecraft came with server software that was compatible with older versions of Java.

Why does this “a JNI error has occurred” error occur? Here are possible reasons: This issue mainly occurs in Minecraft version 21w19a and newer. Some Minecraft users see the JNI error Minecraft server message that appears when trying to start the client or server: “A JNI error has occurred, please check your installation and try again”.

Solution 2: Remove Broken System Path Variables for Java.

Solution 1: Install the Latest Java Version.

If you also encounter this issue, then you can refer to the solutions provided in this article from MiniTool Partition Wizard. Some Minecraft users see the “a JNI error has occurred” error when trying to start the client (game) or server (.jar).