How to fix the JNI Error in Java Edition when setting up a Minecraft Server

As many fans are aware, Minecraft version 1.17 was recently released. This highly anticipated update contained a myriad of new features, including new mobs, blocks, items, and achievements.

Unlike previous versions, Minecraft 1.17 server software now relies on the latest version of Java (Java 16) in order to function correctly. The most common cause of the JNI error while trying to set up a Minecraft server is due to the Java version installed on the machine being outdated.

Reading: minecraft java server download not working

Fortunately, it's easy enough to fix this issue via simply updating Java. This will only take a few minutes at the most, and all the relevant steps will be carefully explained below.

Why are players getting a JNI Error while trying to set up a Minecraft server?

Previous versions of Minecraft carried server software that was compatible with older versions of Java. However, this was not the case with the latest Minecraft 1.17 update, which now requires Java 16 in order to launch and run correctly.

This is why players who have successfully run Minecraft servers in the past with older versions may now be seeing this error upon trying to set up a 1.17 server.

Minecraft players who are using an outdated version of Java will be greeted with this message

How can players fix the JNI Error?

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In most cases, the JNI error can be fixed simply by updating Java on the device to match the latest release. In this case, it's Java 16.

Players can follow the steps below in order to complete the installation of Java 16:

Step 1.)

The first step is to download the Java 16 installer. Players can easily do this by visiting the official Oracle website. Oracle are the creators of Java, and direct downloads for Java 16 can be found here.

Players can select their correct download based on whether they are on a Windows or Mac machine. The majority of Windows users will want to download the file ending with .exe, as shown in the image below.

Windows users will want to download this version of the Java 16 installer

Step 2.)

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After successfully downloading the Java 16 installer, players now need to install the software on their machine. This process can be initiated by simply double-clicking the executable file that has been downloaded and allowing the installer to make changes if asked.

Step 3.)

After the installer has been launched, it's smooth sailing from there. All players need to do is hit the “next” button a few times, and the installer should do the rest.

Once complete and fully installed, players should be greeted with the message below. The JNI error should now be fixed, and players can try launching the 1.17 Minecraft server software.

This screen should be displayed upon successful installation of Java 16

Also read: How to copy and paste using WorldEdit in Minecraft

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