Troubleshooting Minecraft: Fixing An Established Connection Was Aborted by the Software in Your Host Machine Error

Minecraft is a widely popular sandbox game that allows players to build and explore virtual worlds. However, players may occasionally run into the error message "An established connection was aborted by the software in your host machine" when trying to connect to a Minecraft server. This guide will walk you through the steps to troubleshoot and fix this error.

Table of Contents

  1. Check Firewall and Antivirus Settings
  2. Update Network Drivers
  3. Reset Winsock and TCP/IP Stack
  4. Check Server Configuration
  5. FAQs

1. Check Firewall and Antivirus Settings

The first step in troubleshooting this error is to ensure that your firewall and antivirus software are not blocking Minecraft. Here's how to do this:

For Windows Firewall:

  1. Open the Control Panel and click on "System and Security."
  2. Click on "Windows Defender Firewall."
  3. Click on "Allow an app or feature through Windows Defender Firewall."
  4. Look for "Minecraft" or "Java(TM) Platform SE binary" in the list of allowed apps. If it's not there, click on "Change settings" and then "Allow another app" to add it.

For Antivirus Software:

  1. Open your antivirus software and locate the settings or options menu.
  2. Look for any settings related to application whitelisting or blocking.
  3. Add "Minecraft" or "Java(TM) Platform SE binary" to the list of allowed applications.

2. Update Network Drivers

Outdated or corrupted network drivers can cause connection issues in Minecraft. To update your network drivers, follow these steps:

  1. Press Win + X and click on "Device Manager."
  2. Expand the "Network adapters" category.
  3. Right-click on your network adapter and select "Update driver."
  4. Choose "Search automatically for updated driver software" and follow the on-screen instructions.

3. Reset Winsock and TCP/IP Stack

Resetting the Winsock and TCP/IP stack can help resolve connection issues in Minecraft. To do this, follow these steps:

  1. Press Win + X and click on "Windows PowerShell (Admin)."
  2. Type the following commands one by one and press Enter after each:
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
  1. Restart your computer and try connecting to the Minecraft server again.

4. Check Server Configuration

If you are the server owner or have access to the server configuration, ensure the server is properly configured and running. Check the following:

  1. Verify the server's IP address and port number are correct in your Minecraft client.
  2. Ensure the file has the correct settings, especially the "server-ip" and "server-port" options.
  3. Check the server logs for any error messages or issues.


Q1: Can a poor internet connection cause this error?

Yes, a poor internet connection can cause the "An established connection was aborted by the software in your host machine" error in Minecraft. Ensure you have a stable and strong internet connection to prevent this issue.

Q2: Can this error be caused by a Minecraft server-side issue?

Yes, this error can also be caused by server-side issues, such as high latency or server overload. If you believe the issue is server-side, contact the server owner or administrator for assistance.

Q3: Does running Minecraft in Administrator mode help fix this error?

Running Minecraft in Administrator mode can sometimes help resolve this error. To do this, right-click on the Minecraft launcher and choose "Run as administrator."

Q4: How do I check if my computer's firewall is causing this error?

You can temporarily disable your computer's firewall to check if it's causing this error. If the error disappears after disabling the firewall, add Minecraft or Java(TM) Platform SE binary to the list of allowed applications in your firewall settings.

Q5: Can reinstalling Minecraft help fix this error?

Reinstalling Minecraft can help fix this error if the issue is related to corrupted game files. However, it's important to try other troubleshooting steps before resorting to a full reinstallation.

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