

Step 3: Click the network which is active currently to get the following interface. Step 2: Go to Update & Security > Windows Security and click Firewall & network protection in the right pane. Step 1: Press Windows + I to open Settings app.

To figure out whether Windows Firewall is the culprit of the issue or not, you can disable it. It is possible that Windows Firewall is blocking your Minecraft server connection. You can deal with the problem using the following methods. Don’t worry is you come across the “Minecraft an existing connection was forcibly closed” issue. The reasons for the issue could be various, and the common ones including interference from firewall, network issue and etc. If this error appears, you will fail to connect your Minecraft server and receive the Connection Lost error message: Internal Exception: jave.io.IOException: An existing connection was forcibly closed by the remote host. Today, we will talk about the java.io.IOException error in Minecraft which might occur when you are trying to log in or access Minecraft server. Just like other games, Minecraft is also reported with multiple problems, such as Minecraft LAN not working, Minecraft won’t load and so on. Minecraft is a sandbox video game that allows you to play with friends.
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How to fix it? MiniTool Partition Wizard puts together some effective methods to help you get rid of the issue. Sometimes, you might encounter the error “an existing connection was forcibly closed by the remote host” while connecting to server in Minecraft.
