Don't Let VPN Error 628 Interrupt Your Connection: Follow These Fixes

VPN 2023-03-06 11:15:02 - by Rachel Lee

VPN error 628 is a common error message that can occur when attempting to establish a connection to a virtual private network (VPN). This error is usually encountered when the connection cannot be established due to a problem with the remote server or network. This error message can indicate various issues, such as incorrect network settings, firewall issues, or problems with the user's router or internet connection. Resolving VPN error 628 requires troubleshooting the underlying cause of the problem, which can involve checking the network settings, ensuring that the firewall is correctly configured, or verifying the VPN client's settings.

What is VPN error 628?

VPN error 628 is a common error message that users may encounter when attempting to establish a virtual private network (VPN) connection. This error typically indicates that the remote server or network is unreachable or that the remote server terminated the connection. There can be several reasons for this error, including issues with the user's network settings, firewall settings, or router configuration. To resolve this issue, users may need to check their network settings and ensure their VPN client is properly configured to connect to the remote server. They may also need to check their firewall settings to ensure that the VPN traffic is allowed and troubleshoot any issues with their router configuration.

Reasons for VPN error 628

VPN error 628 can occur due to various reasons that can prevent the VPN client from establishing a connection to the remote server. One common reason for the error is network connectivity issues, such as an unstable or interrupted internet connection. Another reason can be firewall restrictions that may block the VPN traffic or prevent the client from connecting to the server. Additionally, incorrect VPN settings or attempting to connect to an incorrect VPN server address can also lead to VPN error 628. Router configuration issues, software conflicts, and server problems such as overloaded servers or server maintenance can also cause the error. Troubleshooting these issues can help resolve VPN error 628 and establish a successful VPN connection.

There can be several reasons for VPN error 628, including:

Network connectivity issues

The error may occur if the network connection is not stable or if there is an interruption in the internet connection. Network connectivity issues refer to problems that arise with the connection between a user's device and the network they are trying to connect to. These issues include slow internet speeds, intermittent or dropped connections, and network outages.

Network connectivity issues can be caused by various factors, such as problems with the user's router, issues with the internet service provider, or problems with the user's device or network settings. These issues can affect the performance of applications and services that rely on network connectivity, such as virtual private network (VPN) connections. Troubleshooting network connectivity issues often involves diagnosing the source of the problem, which can require checking network settings, restarting devices, or contacting the internet service provider for assistance.

Firewall restrictions

The error can occur if the firewall is blocking the VPN connection or the VPN client is not configured to work with the firewall. Firewall restrictions refer to security measures a firewall implements to regulate and control incoming and outgoing network traffic. A firewall is a software or hardware-based security system designed to prevent unauthorized access to a network or device. Firewall restrictions can be configured to allow or block specific types of network traffic, such as internet browsing, email, or file sharing.

In virtual private networks (VPNs), firewall restrictions can prevent VPN traffic from reaching its destination or block incoming VPN connections. VPN clients may need to be configured to work with the firewall, or specific ports may need to be opened to allow VPN traffic to pass through the firewall. Failure to properly configure the firewall can result in connectivity issues and errors, such as VPN error 628.

Incorrect VPN settings

The error can occur if the VPN client's settings are incorrect or if the client is attempting to connect to an incorrect VPN server address. Incorrect VPN settings refer to misconfigured or inaccurate settings in the virtual private network (VPN) client or server that can prevent establishing a successful VPN connection. These settings can include parameters such as the VPN server address, the VPN protocol, the encryption level, and the authentication method. If any of these settings are incorrect or mismatched between the client and server, the VPN connection may not be established, resulting in errors such as VPN error 628.

Other potential issues with incorrect VPN settings include connection drops, slow speeds, and difficulties accessing network resources. Resolving incorrect VPN settings often requires careful verification and adjustment to ensure they match the client and server and are configured correctly to establish a secure and stable VPN connection.

Router configuration

The error can occur if the user's router is not configured correctly to allow VPN traffic or if the router firmware needs to be updated. Router configuration refers to setting up and adjusting the settings of a network router to ensure that it operates correctly and securely. A router is a device that connects a user's device to the internet, and it serves as a gateway for network traffic between the user's device and the internet. Router configuration can involve various tasks, such as setting up the router's network address translation (NAT) settings, configuring the wireless network settings, and enabling or disabling firewall and port forwarding settings.

In virtual private networks (VPNs), router configuration can involve configuring the router to allow VPN traffic to pass through it, such as opening specific ports or configuring the router to support VPN protocols. Misconfigured router settings can lead to connectivity issues and errors, such as VPN error 628. It is important to ensure that router settings are correctly configured to support the desired network traffic.

Software conflicts

The error can occur if software conflicts between the VPN client and other software are running on the user's device. Software conflicts refer to compatibility issues arising when two or more software programs installed on a user's device interfere with each other's operation. These conflicts can cause the software to crash, freeze, or behave unpredictably.

In virtual private networks (VPNs), software conflicts can occur when the VPN client conflicts with other software running on the user's device, such as antivirus software, firewalls, or other security software. For example, a conflict between a VPN client and a firewall may cause the VPN connection to fail, resulting in errors such as VPN error 628. Resolving software conflicts can involve adjusting the settings of conflicting software or temporarily disabling one or more software programs to isolate the problem.

Server issues

The error can occur if there are problems with the VPN server, such as an overloaded server, server maintenance, or server downtime. Server issues refer to problems with the remote server a user tries to connect to over a network. In the context of virtual private networks (VPNs), server issues can include problems such as server maintenance, overloaded servers, or issues with the server configuration. Server maintenance can involve routine updates and upgrades to the server software or hardware that can result in temporary unavailability or reduced server performance.

Overloaded servers can occur when the server is handling too many requests and cannot respond to new requests, resulting in slow connection speeds or drops. Server configuration issues can include misconfigured settings, incorrect authentication or encryption settings, or issues with server software compatibility. VPN errors such as VPN error 628 can result from server issues, and resolving these issues often requires troubleshooting the server itself or contacting the network administrator for assistance.

How to solve VPN error 628

Solving VPN error 628 can vary in difficulty depending on the specific cause of the error. Some causes, such as network connectivity issues or incorrect VPN settings, can be relatively easy to resolve by checking and adjusting settings. However, other causes, such as firewall restrictions or software conflicts, may require more advanced troubleshooting and configuration changes. Additionally, if the cause of the error is related to server issues, such as maintenance or overloaded servers, resolving the error may be outside the user's control and require contacting the network administrator for assistance.

There are several steps you can take to try to resolve VPN error 628:

Check your network connectivity

Ensure that your device is properly connected to the network and that there are no issues with your internet connection. To check your network connectivity, follow these steps:

Check physical connections: Ensure all cables and devices are properly connected to the network, including your modem, router, and device.
Test your internet connection: Use a web browser to visit a website or run a speed test to verify your internet connection is working properly.
Check IP address: Verify that your device has a valid IP address assigned by the network. You can do this by opening a command prompt or terminal window and typing "ipconfig" (Windows) or "ifconfig" (macOS or Linux) and looking for your device's IP address.
Check DNS settings: Ensure that your DNS settings are correctly configured. This may involve setting your DNS server to automatic or manually specifying a DNS server address.
Try resetting your network: If you are still experiencing connectivity issues, try resetting your modem, router, and device.

Following these steps, you can check your network connectivity and identify any issues preventing you from establishing a successful VPN connection.

Verify your VPN settings.

Check that your VPN settings are correct, including the VPN server address, VPN protocol, encryption level, and authentication method. Make sure that these settings match the VPN client and server. Open your VPN client: Launch your software and navigate to the settings or configuration page.

Check VPN server address: Check that the server address entered in the client software matches the correct server address. The VPN service provider typically provides this information.
Check VPN protocol: Verify that the protocol selected in the client software matches the protocol supported by the VPN server. Common VPN protocols include OpenVPN, L2TP/IPSec, and PPTP.
Check encryption level: Ensure that the encryption level selected in the client software matches the encryption level supported by the VPN server. For example, if the server supports AES-256 encryption, ensure this is selected in the client software.
Verify authentication method: Check that the authentication method selected in the client software matches the authentication method supported by the VPN server. Common authentication methods include username and password, digital certificates, or two-factor authentication.
Save and apply changes: Once you have verified that all settings match between the client software and server, save and apply the changes.

Following these steps, you can verify your VPN settings and ensure they are correctly configured to establish a successful VPN connection.

Check for firewall restrictions.

Ensure your firewall settings are correctly configured to allow VPN traffic to pass through. Check for any restrictions on specific ports or protocols blocking your VPN connection. To check for firewall restrictions, follow these steps:

Identify your firewall: Determine which firewall software or hardware is used on your network. This may involve checking your device's built-in firewall or router's firewall settings.
Check firewall settings: Check the firewall settings to ensure they are correctly configured to allow VPN traffic to pass through. This may involve enabling specific ports or protocols that your VPN client requires.
Disable firewall temporarily: If you are unsure of the specific firewall settings required by your VPN client, try temporarily disabling the firewall to see if this resolves the issue. This should only be done as a temporary troubleshooting step, and the firewall should be re-enabled once the issue is resolved.
Configure firewall exceptions: If you determine that firewall settings are blocking your VPN connection, configure the firewall to allow exceptions for the specific ports or protocols your VPN client requires.

By following these steps, you can check for firewall restrictions that may be preventing you from establishing a successful VPN connection and take steps to configure the firewall settings accordingly. It is important to ensure that the firewall settings are properly configured to maintain network security while allowing VPN traffic to pass through.

Adjust your router configuration.

Check your router settings to ensure they are correctly configured to allow VPN traffic to pass through. This may involve opening specific ports or enabling specific VPN protocols.

Check for software conflicts.

Ensure no conflicts exist between your VPN clients and other software running on your device, such as antivirus software, firewalls, or other security software. Try temporarily disabling conflicting software to isolate the problem. To check for software conflicts, follow these steps:

Identify conflicting software: Determine if any software on your device conflicts with your VPN client. This may include antivirus software, firewalls, or other security software.
Disable conflicting software temporarily: If you suspect that conflicting software is causing issues with your VPN client, try temporarily disabling the software to see if this resolves the issue. This should only be done as a temporary troubleshooting step, and the software should be re-enabled once the issue is resolved.
Check software compatibility: Ensure your software is compatible with your VPN client. Check for any known compatibility issues or updates that may be required to resolve compatibility issues.
Configure software exceptions: If you determine that conflicting software is causing issues with your VPN client, configure the software to allow exceptions for the specific ports or protocols your VPN client requires.

By following these steps, you can check for software conflicts that may be preventing you from establishing a successful VPN connection and take steps to configure the software settings accordingly. Ensuring the software settings are properly configured to maintain network security while allowing VPN traffic to pass through is important.

Check for server issues.

Contact your network administrator to check for server issues causing VPN error 628. This may involve checking for server maintenance, overloaded servers, or misconfigured server settings.

Last words

Following these steps, you can troubleshoot and resolve VPN error 628 and establish a successful VPN connection. Solving VPN error 628 can range from relatively easy to more complex, depending on the specific cause of the error. It is important to follow a systematic troubleshooting approach and to carefully check all relevant settings to identify and resolve the underlying issue causing the error.

People also read: