Troubleshooting 'Remote side unexpectedly closed network connection' Error in MobaXterm

Are you encountering the "Remote side unexpectedly closed network connection" error while using MobaXterm? Don't worry, we're here to help you troubleshoot and resolve this issue. This error typically occurs when the connection between your local machine and the remote server is interrupted unexpectedly. There are several possible causes for this error, and we'll guide you through each one step-by-step.

1. Check your network connection

The first thing you should do is ensure that your network connection is stable. Make sure you are connected to the internet and that there are no network outages or disruptions. You can try accessing other websites or services to verify your connection. If you're using a Wi-Fi connection, try switching to a wired connection to rule out any potential wireless issues.

2. Verify the remote server is accessible

Next, confirm that the remote server you are trying to connect to is accessible. Double-check the server's IP address or hostname and ensure that it is correct. You can try pinging the server to see if you receive a response. Open the command prompt or terminal and enter the following command:

If you receive a response, it means the server is reachable. If not, there may be an issue with the server or your network configuration.

3. Check firewall settings

Firewalls can sometimes block incoming or outgoing connections, leading to the "Remote side unexpectedly closed network connection" error. Make sure that your firewall settings allow connections to the remote server. If you're unsure how to do this, consult your system administrator or refer to the documentation for your firewall software.

4. Verify SSH or Telnet service is running

If you're connecting to the remote server using SSH or Telnet, ensure that the corresponding service is running on the server. If the service is not running, you won't be able to establish a connection. Contact your system administrator or refer to the server documentation to check and start the necessary service.

5. Check for software conflicts

In some cases, other software installed on your machine can interfere with MobaXterm's network connections, resulting in the error. Try temporarily disabling any antivirus or firewall software and see if the issue persists. If the error disappears after disabling the software, you may need to configure it to allow MobaXterm's connections or consider using alternative software.

6. Update MobaXterm

Outdated versions of MobaXterm may have compatibility issues or bugs that can cause network connection errors. Make sure you are using the latest version of MobaXterm by visiting the official website and downloading the most recent release. Updating to the latest version may resolve the issue you're experiencing.

7. Contact your system administrator

If you've tried all the above steps and are still encountering the "Remote side unexpectedly closed network connection" error, it's recommended to reach out to your system administrator or IT support team. They will have access to additional resources and may be able to assist you in resolving the issue.

We hope that this troubleshooting guide has helped you resolve the "Remote side unexpectedly closed network connection" error in MobaXterm. By following these steps, you should be able to identify and address the underlying cause of the issue. If you have any further questions or need additional assistance, don't hesitate to seek help from your system administrator or IT support.

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