Jni Error Has Occurred

Some Minecraft users are seeing an error whenever they try to launch the client (the game) or the server (.jar). The error message that comes upwardly is: "A JNI error has occurred, please bank check your installation and effort over again". This trouble is by and large reported to occur with version Minecraft version 21w19a and newer and it's confirmed to appear on Windows 7, Windows viii.1, Windows ten, and Windows 11.

Equally information technology turns out, there are multiple causes that might trigger this error when sure users endeavour to launch Minecraft and about each of them is related to the Java installation.

Hither's a list of possible culprits that are near likely responsible for causing the "A JNI error has occurred, please check your installation and try again":

Coffee 16 JDK is missing – If you get this fault while attempting to launch Minecraft build 21w19 or newer, the first thing you should do is check if the Java xvi JDK installation is missing from your PC. This is the nigh pop reason why this fault is encountered when launching Minecraft on PC. If the Java 16 JDK is missing from your reckoner installation, download and install information technology from the official channels.
Broken System Path for Java – As it turns out, another reason why you can look to see this error is a scenario in which the organisation variable path for java is broken and tricks the Minecraft launcher into assertive that Java is not installed on your PC when it actually is. If this scenario is applicable, you should exist able to fix the consequence past removing the broken system PATH variable from the Surroundings variables.

Install the latest Java JDK version

In most documented cases, this particular error happens when y'all attempt to launch Minecraft or a Minecraft server on a PC that doesn't accept Java 16 or newer installed. Continue in mind that starting with Minecraft build 21w19, you lot volition demand to accept Java's 16 JDK version installed on your PC, otherwise, the game will not launch.

To fix this result, you volition merely need to update your current Java JDK to the most recent version bachelor using the official channels.

If you lot're looking for footstep past stride instructions on how to practise this, follow the guide below:

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

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

Unzip the Java JDK
Once the extraction process is consummate, navigate to the location where you extracted the JDK and copy information technology on your clipboard by right-clicking on information technology and choosing Copy from the context carte du jour.
Next, use File Explorer (My Figurer) to navigate to the following location and paste the JDK 16 binder that you previously copied:
```
C:\Plan Files\Java
```
Wait until the copying operation is consummate, and then close the window and double-click on your Minecraft launcher in one case again (TLauncher or other).
Once yous're inside the launcher, click on the settings icon, then click on Settings from the context menu.

Accessing the Settings card of the Minecraft launcher
Inside the Settings menu, ensure that the Minecraft Settings is selected at the elevation, so click the Browse push associated with Java path.
Next, apply the scan window to navigate to the following location:
```
C:\Program Files\Coffee\jdk-16.0.2\bin
```
Once within, make sure that javaw.exe is selected before clicking the Open up button.
Finally, click on the Save push button to successfully save the java path in your Minecraft launcher.
Launch the game commonly and you lot should encounter the issue fixed.

If the problem is nonetheless not resolved, move downwards to the next potential gear up below.

Remove the broken System Path variable for Java

If the first method was not effective in your case, the adjacent thing you should investigate is a potentially broken system variable used by Java.

A broken variable can be the determining factor in 'tricking' your Minecraft launcher into assertive that the Java JDK requirement for the game is not installed when information technology really is.

In this case, yous can go the upshot resolved by accessing the System Properties screen and modifying the Environment variables in a way that the Java PATH surroundings is removed.

This fix has been confirmed to be effective for a lot of Minecraft users that nosotros're encountering the "A JNI error has occurred, please bank check your installation and try again" when attempting to launch the game from a dedicated launcher.

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

Notation: The instructions below should work on every contempo Windows version including Windows 7, Windows 8.one, Windows 10, and Windows 11.

Press Windows key + R to open up a Run dialog box. Next, type 'sysdm.cpl' inside the text box and press Enter to open upward the Arrangement Properties window.

Open the System Properties window

Note: If you lot are prompted past the User Account Command prompt, click Yes to grant admin admission.
Once yous're finally inside the System Properties window, click on the Advanced tab, then click on Environment variables(under Startup and Recovery).

Open up System Variables menu
Once y'all're within the System Variables window, become to Organization Variables, then cull Path and click on Edit.

Editing the path variable
Next, once you're inside the Edit surround variable window, go ahead and wait for an environment variable that mentions coffee.
Once y'all spot the culprit, click on it once to select information technology, then click Delete to get rid of it.

Deleting the java environment variable
Once the problematic environment variable has been deleted, reboot your PC, then start Minecraft again and see if the "A JNI error has occurred, please cheque your installation and endeavour again" upshot is now stock-still.