A J and I Pleas Check Your Java Instlation and Try Again

Some Minecraft users are seeing an error whenever they attempt to launch the client (the game) or the server (.jar). The error message that comes up is: "A JNI fault has occurred, delight check your installation and attempt over again". This problem is mostly reported to occur with version Minecraft version 21w19a and newer and it'southward confirmed to announced on Windows vii, Windows viii.ane, Windows x, and Windows 11.

As information technology turns out, there are multiple causes that might trigger this fault when certain users attempt to launch Minecraft and most each of them is related to the Coffee installation.

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

Coffee 16 JDK is missing – If you lot become this error while attempting to launch Minecraft build 21w19 or newer, the showtime thing you should practise is check if the Java xvi JDK installation is missing from your PC. This is the most pop reason why this mistake is encountered when launching Minecraft on PC. If the Coffee 16 JDK is missing from your computer installation, download and install it from the official channels.
Broken Organization Path for Coffee – Equally it turns out, another reason why y'all tin can wait to run across this mistake is a scenario in which the system variable path for java is cleaved and tricks the Minecraft launcher into believing that Coffee is not installed on your PC when information technology actually is. If this scenario is applicable, you should exist able to fix the issue by removing the broken system PATH variable from the Environment variables.

Install the latest Java JDK version

In almost documented cases, this particular error happens when yous endeavor to launch Minecraft or a Minecraft server on a PC that doesn't accept Java 16 or newer installed. Keep in listen that starting with Minecraft build 21w19, you will need to take Coffee'southward 16 JDK version installed on your PC, otherwise, the game will not launch.

To fix this issue, you will only need to update your current Coffee JDK to the most recent version available using the official channels.

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

Ensure that the Minecraft launcher (Tlauncher or any other) is completely closed before moving to the side by side step below.
Open up your default browser and visit the download page of the Java fifteen Development kit.
Once you're inside, make sure the Windows tab is selected, then roll all the way down to the Windows x64 Compressed annal 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 have the Oracle Technology Network License Agreement for Oracle Java SE, then click on the Download button below.
Wait until the download is complete, and so unpack the zip archive with WinZip, WinRar, 7Zip or the built-in equivalent and wait for the functioning to complete.

Unzip the Java JDK
Once the extraction procedure is complete, navigate to the location where y'all extracted the JDK and re-create it on your clipboard past right-clicking on information technology and choosing Re-create from the context menu.
Side by side, use File Explorer (My Figurer) to navigate to the following location and paste the JDK sixteen binder that you previously copied:
```
C:\Program Files\Java
```
Await until the copying operation is complete, so close the window and double-click on your Minecraft launcher one time again (TLauncher or other).
Once yous're inside the launcher, click on the settings icon, and so click on Settings from the context carte.

Accessing the Settings menu of the Minecraft launcher
Within the Settings menu, ensure that the Minecraft Settings is selected at the top, then click the Browse button associated with Java path.
Next, utilize the browse window to navigate to the post-obit location:
```
C:\Program Files\Coffee\jdk-sixteen.0.2\bin
```
Once inside, make sure that javaw.exe is selected earlier clicking the Open button.
Finally, click on the Save button to successfully save the java path in your Minecraft launcher.
Launch the game normally and you lot should see the result stock-still.

If the trouble is still not resolved, move downwardly to the next potential fix below.

Remove the broken System Path variable for Java

If the first method was not effective in your instance, the side by side 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 Coffee JDK requirement for the game is non installed when information technology actually is.

In this example, you tin can get the outcome resolved by accessing the System Properties screen and modifying the Environment variables in a way that the Java PATH environment is removed.

This gear up has been confirmed to be constructive for a lot of Minecraft users that we're encountering the "A JNI error has occurred, delight check your installation and try once again" when attempting to launch the game from a dedicated launcher.

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

Note: The instructions below should work on every recent Windows version including Windows 7, Windows 8.1, Windows 10, and Windows eleven.

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

Open up the Organisation Backdrop window

Note: If you lot are prompted by the User Account Control prompt, click Yep to grant admin access.
In one case yous're finally inside the Organization Properties window, click on the Advanced tab, then click on Environs variables(nether Startup and Recovery).

Open System Variables menu
In one case you're inside the Organisation Variables window, go to Arrangement Variables, then cull Path and click on Edit.

Editing the path variable
Adjacent, one time y'all're inside the Edit environment variable window, go ahead and look for an surroundings variable that mentions java.
Once you lot spot the culprit, click on it once to select it, then click Delete to get rid of it.

Deleting the java environs variable
Once the problematic environs variable has been deleted, reboot your PC, so beginning Minecraft once again and see if the "A JNI mistake has occurred, please check your installation and effort over again" issue is now stock-still.