Eclipse a Jni Error Has Occurred

Some Minecraft users are seeing an error whenever they endeavor to launch the client (the game) or the server (.jar). The error message that comes up is: "A JNI error has occurred, please check your installation and try again". This problem is mostly reported to occur with version Minecraft version 21w19a and newer and it's confirmed to appear on Windows seven, Windows viii.1, Windows x, and Windows 11.

Equally it turns out, there are multiple causes that might trigger this mistake when certain users attempt to launch Minecraft and virtually each of them is related to the Java installation.

Here'south a list of possible culprits that are almost probable responsible for causing the "A JNI error has occurred, delight check your installation and effort again":

Java 16 JDK is missing – If you get this error while attempting to launch Minecraft build 21w19 or newer, the outset thing you should do is check if the Java 16 JDK installation is missing from your PC. This is the well-nigh popular reason why this mistake is encountered when launching Minecraft on PC. If the Java 16 JDK is missing from your estimator installation, download and install it from the official channels.
Broken Organisation Path for Java – As it turns out, another reason why you lot can await to come across this error is a scenario in which the arrangement variable path for coffee is broken and tricks the Minecraft launcher into believing that Java is not installed on your PC when it actually is. If this scenario is applicable, you lot should be able to fix the issue by removing the broken arrangement PATH variable from the Surround variables.

Install the latest Coffee JDK version

In most documented cases, this particular error happens when yous try to launch Minecraft or a Minecraft server on a PC that doesn't accept Java 16 or newer installed. Go along in mind that starting with Minecraft build 21w19, you will need to have Java's 16 JDK version installed on your PC, otherwise, the game volition not launch.

To set this issue, y'all will simply need to update your current Java JDK to the about recent version available using the official channels.

If you're looking for step by step instructions on how to practice this, follow the guide below:

Ensure that the Minecraft launcher (Tlauncher or whatsoever other) is completely closed before moving to the next step below.
Open your default browser and visit the download page of the Java 15 Evolution kit.
Once you're inside, make sure the Windows tab is selected, so scroll all the way down to the Windows x64 Compressed archive and click on the acquaintance Download hyperlink.

Downloading the x65 compressed archive of the Coffee 16 JDK
At the confirmation prompt, check the box associated with I reviewed and accept the Oracle Applied science Network License Agreement for Oracle Java SE, and then click on the Download button below.
Look until the download is complete, then unpack the zip archive with WinZip, WinRar, 7Zip or the built-in equivalent and expect for the operation to complete.

Unzip the Java JDK
Once the extraction process is consummate, navigate to the location where yous extracted the JDK and re-create it on your clipboard past right-clicking on information technology and choosing Copy from the context card.
Adjacent, utilise File Explorer (My Computer) to navigate to the post-obit location and paste the JDK sixteen folder that you previously copied:
```
C:\Plan Files\Java
```
Wait until the copying operation is complete, then close the window and double-click on your Minecraft launcher once again (TLauncher or other).
One time yous're inside the launcher, click on the settings icon, then click on Settings from the context menu.

Accessing the Settings carte of the Minecraft launcher
Inside the Settings menu, ensure that the Minecraft Settings is selected at the top, then click the Browse push associated with Coffee path.
Adjacent, employ the browse window to navigate to the following location:
```
C:\Plan Files\Java\jdk-16.0.ii\bin
```
Once within, make sure that javaw.exe is selected before clicking the Open button.
Finally, click on the Save push button to successfully save the java path in your Minecraft launcher.
Launch the game normally and you lot should encounter the issue stock-still.

If the problem is still not resolved, move down to the next potential fix beneath.

Remove the broken Organisation Path variable for Java

If the first method was not effective in your case, the next matter you should investigate is a potentially cleaved system variable used by Java.

A cleaved variable can exist the determining factor in 'tricking' your Minecraft launcher into believing that the Java JDK requirement for the game is not installed when it really is.

In this case, you can get the outcome resolved by accessing the Arrangement Backdrop screen and modifying the Environment variables in a way that the Java PATH surroundings is removed.

This set has been confirmed to be effective for a lot of Minecraft users that we're encountering the "A JNI fault has occurred, delight bank check your installation and try again" when attempting to launch the game from a defended launcher.

Follow the instructions below for a footstep-by-footstep guide that will guide yous through the process of removing the corrupted Java JDK path variable:

Note: The instructions below should work on every contempo Windows version including Windows vii, Windows 8.1, Windows 10, and Windows 11.

Printing Windows primal + R to open up upwardly a Run dialog box. Next, type 'sysdm.cpl' inside the text box and press Enter to open up up the System Properties window.

Open upwards the System Backdrop window

Note: If you are prompted by the User Business relationship Command prompt, click Aye to grant admin access.
In one case you're finally within the Arrangement Properties window, click on the Advanced tab, then click on Surround variables(under Startup and Recovery).

Open up Organization Variables menu
One time yous're inside the Organization Variables window, go to System Variables, then cull Path and click on Edit.

Editing the path variable
Next, one time yous're inside the Edit environment variable window, go ahead and expect for an environment variable that mentions coffee.
Once you spot the culprit, click on it in one case to select it, then click Delete to get rid of it.

Deleting the java environment variable
In one case the problematic environment variable has been deleted, reboot your PC, then start Minecraft again and run into if the "A JNI error has occurred, delight bank check your installation and effort again" result is at present fixed.