How to Fix Internal Exception: in Minecraft

Internal exception
Internal exception

If you use Minecraft you might have definitely faced the issue of Internal Exception This has become a common issue that many players have to go through when playing Minecraft game as it occurred when you have corrupt Minecraft installed. Besides that, the Improper configuration or DNS cache of the issue can also be caused by Internal Exception

This issue arises when a player tries to connect to a server but due to the server error code it cannot connect to a secure server and displays the following message

“Connection Lost Internal Exception: An existing connection was forcibly closed by the remote host”

Now, to solve this issue, you have to first understand what is Internal Exception in Minecraft and what you can do, when you again faced this issue.

What Type of Error is Internal Exception:

Basically, it is a server error code that occurs when your computer tries to establish a connection to the Minecraft server and it gets disrupted and shows the message of Internal Exception:

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This can be frustrating for users when they wanted to play games. So, this is a common issue and you can solve this error by going through this post.

How to Fix Internal Exception: in Minecraft (Basic)

This issue can be solved with some basic fixation. As this is the universal solution for most of the server problems, we recommend you not to skip this method until and unless you have already tried it. This method is the simplest solution and takes the least amount of time. So, it will be easy and time-saving as well.

Below are some basic solutions that might solve the Internal Exception These are

  • Restart Minecraft on your computer.
  • Restart your computer and run Minecraft again.
  • Reboot your router and unplug it for a minute or two from your computer and then plug it in. Now, open Minecraft again.

As these are some of the basic fixations of this error, you can save your time and also it does not require any technical knowledge, so, if you are a novice in technical terms, you can easily perform these steps.

Make sure you try every method before going to the advanced fixation method of this error.

Fix Internal Exception: in Minecraft (Advanced)

This is an advanced solution that you can execute to fix Internal Exception: in Minecraft if the basic methods do not work for you.

1. Reinstall Minecraft

Minecraft can also be the reason for the Internal Exception server error. This can happen when your Minecraft game issues any internal application error or it may have outdated. So, you can uninstall the current version and install the latest version from Minecraft’s Official Site.

2. Changing DNS of Router

As we have already stated, the DNS cache can also be the reason for this server error as your ISP (Internet Service Provider) might have an issue with its DNS server that prevents your device from connecting to Minecraft’s server.

This method actually involves some configuration that you should perform as all routers allow the owners to change their DNS properties. Just replace the DNS value of your router with the below-mentioned property to see if that works for you or not.

  • Primary DNS Server:
  • Secondary DNS Server:

As the above stated DNS property is secured and it will connect to Google’s own server whenever you try to establish a connection. As this is a trusted server, this might solve the “Internal Exception:” error in Minecraft.

3. Enable Java Native Sandbox

Fix Internal Exception: in Minecraft

Enabling Java Native Sandbox can also help you in solving this server error as it allows java applications to run in a restricted environment that can bypass the issue of your server. So, you just have to enable the Java Native Sandbox to try this method to see whether it works or not.

  • Open the search bar on your Windows taskbar and type “Control Panel” and on the pop-up of the control panel.
  • Now, go to the header option and under the header menu, you will see the “Java” option.
  • Click on that java option then a small panel will appear named “Java Control Panel.”
  • After that, in that panel, you will see different Tabs like General or Java, but you have to click on the “Advanced” tab.
  • Now under the advanced tab, scroll down until you find the option of “Advanced Security Settings
  • Under that, you have to find the option “Enable the operating system’s restricted environment (native sandbox).” Just mark it as a tick and save it by clicking “Ok.
  • Now, you have to restart your computer to make sure that changes can take effect.

The above steps, if followed properly, might solve the server error and you can then fix the Internal Exception: error.


The above solution will solve this server error. Make sure you try the basic methods first before hovering advanced as that can save your time. But if that does not work well, then go with advanced methods which might solve the issue.