How to Fix the Minecraft Error “Internal exception: java.io.ioexception”

Technology has contributed to both the creation of new modern games and the updates of existing games. Gaming used to be primarily for entertainment, but technological improvements have extended consumers’ views on the subject.

Minecraft is currently one of the most popular and engaging games. Minecraft is an objective video game that encourages players to use their imaginations to achieve a particular objective. Many children have become engrossed in the game as a result of its numerous exciting features.

However, as fascinating as Minecraft is, there may be some difficulties in accessing it. This is true for any built applications or websites, not only Minecraft. ‘Internal Exception java.io.ioexception’ does not suggest a serious problem with the game.

However, explicit knowledge of its genuine meaning is essential to judge the severity of the issue. On the other hand, this page is dedicated to addressing ‘java.io.ioexception’ concerns in Minecraft games.

Mojang used Java to create the Minecraft video game. When playing Minecraft, there will be some instances when you might experience specific errors, much like using other applications. This, on the other hand, is not unusual, as a variety of factors can trigger it.

Causes of the Minecraft Error “Internal exception: java.io.ioexception”

The Minecraft Error “Internal exception: java.io.ioexception” can be caused by the following reasons:

1. Weak/intermittent internet connection.
2. Low storage on the hard drive.
3. The anti-virus application is blocking Minecraft and other files associated with the game.
4. Minecraft does not have permission to access/make changes to its files.
5. Minecraft files are missing/corrupted.

Troubleshooting Methods to Fix the Minecraft Error “Internal exception: java.io.ioexception”

Before you make changes in the settings of Minecraft or your system, you have to make sure that error is not from any external causes. Here are some basic troubleshooting steps that you can perform that might save you time and effort.

Reboot Your Internet Router

Rebooting your router will clear your connection settings, stop malicious network attacks, and remove any unauthorized connections from your network. Restarting your connection will also fix various speed and connectivity issues such as the Minecraft Error “Internal exception: java.io.ioexception.”

Reboot Your Computer/Device

When you restart a computer, all device drivers are unloaded, all programs are closed, and the operating system is restarted. In the course of regular usage or as a troubleshooting procedure to remedy a problem, you may need to reboot your computer, and both Windows and Mac OS provide options for you to do so fast.

Reinstall a Fresh Copy of Minecraft

If the above steps did not work for you, then try this next one. Uninstalling the current version of Minecraft from your computer and installing a fresh copy of the game may solve the Minecraft Error “Internal exception: java.io.ioexception.”

1. Hold down the Windows + R keys on your keyboard and type in “appwiz.cpl” on the run command line and press “enter”

2. In the list of applications, look for Minecraft and click uninstall.

3. While waiting for the process to complete, go to Minecraft’s official website to download a fresh installer by clicking here. Select the appropriate installer version for your computer.

4. Once Minecraft has been removed, go to the installer file of Minecraft and install the application as normal. Install a fresh copy of Minecraft, launch the game and see if the Minecraft Error “Internal exception: java.io.ioexception” has been fixed.

Temporarily Disable Windows Defender

In some cases, Windows Defender will quarantine files that aren’t harmful. These files are referred to as “false positives.” If a Minecraft file is recognized as a false positive, the program may fail to function correctly, resulting in a crash. To see if Windows Defender is the issue, turn it off momentarily.

1. Open Windows Defender by clicking on the Windows button and type “Windows Security” and press “enter”.

2. Click on “Virus & Threat Protection” on the Windows Security homepage.

3. Under Virus & Threat Protection Settings, click “Manage Settings” and disable the following options:

• Real-time Protection
• Cloud-delivered Protection
• Automatic Sample Submission
• Tamper Protection

Add Minecraft in the Windows Defender Whitelist

If Minecraft appears to work after disabling Windows Defender, that suggests Windows Defender is preventing or quarantining Minecraft files. You must now add the entire Minecraft folder to Windows Defender’s whitelist or exception folder.

This implies that Windows Defender will not block or put any files in quarantine to the Minecraft folder, whether they are old or new.

1. Open Windows Defender by clicking on the Windows button and type “Windows Security” and press “enter”.

2. Under the “Virus & Threat Protection Settings” click on the “Manage Settings”.

3. Click on “Add or Remove Exclusions” under Exclusions

4. Click on “Add an exclusion” and select “Folder”. Choose the “Minecraft Launcher” folder and click “select folder”

5. You can now enable Windows Defender and open Minecraft to check if the Minecraft Error “Internal exception: java.io.ioexception” has been fixed.

Allow Minecraft Through the Firewall

If your Firewall blocks Minecraft, it may lead to the Minecraft Error “Internal exception: java.io.ioexception.” Here’s how to get Minecraft to work around your Firewall.

1. Hold down the “Windows” + “R” keys on your keyboard and type in “control firewall.cpl” in the run command line.

2. In the Firewall window, click on “Allow an app or feature through Windows Defender Firewall”

3. Click on “Change Settings” and put a check on both “Private” and “Public” for all apps with the name of “javaw.exe”, “Minecraft” and Java Platform SE Binary”

4. If you cannot see the “Minecraft” application on the list, click on “Allow another app”

5. Click on “Browse” and go to the folder of Minecraft and select “Minecraft Launcher” and click “Add”. Once it has been added, you will be brought back to the main window of Windows Firewall; click “OK” to complete the steps.

6. Once you have completed all the steps, launch Minecraft and see if the Minecraft Error “Internal exception: java.io.ioexception” 

Wrap Up

There might be multiple reasons why Minecraft players would encounter the Minecraft Error “Internal exception: java.io.ioexception,” but most of these causes can easily be fixed by performing their corresponding troubleshooting methods.