A Guide On How To Fix Common VPN Issues

So you’ve decided to get a VPN. While it’s relatively easy to configure and shouldn’t cause many headaches to make it run, it’s not always a perfect product. There are many factors that can affect its performance throughout its lifetime and in some instances, issues and errors will arise. And there’s a way to fix them. But before you take your phone and contact your VPN support, maybe you can consider troubleshooting it yourself (trying something new never hurt anybody). If you ever encounter one on your screen, don’t fret cause you’re not alone. There have been many users before you who have experienced and fixed these errors. Here’s a short list of how you can troubleshoot these common problems through some very easy steps.

How to Fix VPN Errors and Various VPN Errors?

VPN Error Code 800

Let’s start with the very basic issue experienced by users. When you see this on your screen, it means there is an issue with the VPN connection between the client and server, Error 800 is a frequent VPN error

There are several causes for this error, including:

• The VPN server is not properly connected to the network
• The network is temporarily down and overloaded with traffic
• VPN client has incorrect configuration settings and security parameters
• Incompatibility of the router with the type of VPN
• Firewall preventing VPN Connection

To resolve this issue, check this possible solutions:

• Make sure to check if you have an internet connection just to cross it off the list
• If the VPN service is working and allowing the connection, the VPN router should be pinged to make sure you’re connected
• Make sure you are using the correct username and password for the VPN server
• If your firewall does not allow the connection, configure the network firewall to open TCP port 1723 and forward IP protocol 47 for Generic Routing Encapsulation (GRE) traffic to the VPN

VPN Error 806:

This error will appear if one or more devices, such as your firewall or router, need to be set up to permit Generic Routing Encapsulation (GRE) protocol packets. 

There are several causes for this error, including:

• Firewall: A firewall can block the VPN connection, preventing the client from connecting to the server.
• Incorrect login credentials: If the client is using the wrong login credentials, the server may reject the connection.
• Server configuration: The server may be configured incorrectly, preventing the client from connecting.
• Internet connection issues: A weak or unstable internet connection can also cause VPN Error 806.
• VPN client software issues: The client software may be outdated or not compatible with the server, causing connection issues.

To resolve this issue, check this possible solutions:

• Check your firewall and antivirus software's settings to get rid of error message 806.
• Temporarily turn them off to allow the VPN connection to be formed.
• Alter the TCP Port 1723 port settings in Windows 10 to permit the connection.

VPN Error 807:

This error 0ccurs when a connection is established between the client and the server, but the connection is terminated due to various reasons.

There are several causes for this error, including:

• Protocol mismatch: If the client and server are using different VPN protocols, such as PPTP and L2TP, it can result in VPN Error 807.  
• NAT (Network Address Translation) issues: NAT can cause issues with VPN connections, as it can change the source and destination IP addresses.  
• Firewall: A firewall can block the VPN connection, preventing the client from connecting to the server.  
• Incorrect login credentials: If the client is using the wrong login credentials, the server may reject the connection.

To resolve this issue, check this possible solutions:

• Disable the antivirus or firewall that might be blocking the requests.
• Check whether the internet connection is working, restart your Wi-fi or LAN, and plug it in again.
• Download a cleaner, run, and clear your history, cache, and entry.
• Follow the correct protocol, which is Point-to-Point Tunneling Protocol (PPTP)
• Replace “HTTP: //” with “/” under the VPN IP address

VPN Error 809:

VPN Error 809 is typically caused by issues related to the authentication process between the client and server.

There are several causes for this error, including:

• If the client is using the wrong login credentials, the server may reject the connection.
• If the certificate used for authentication is invalid, expired, or not installed properly, it can cause VPN Error 809. 
• Firewall or antivirus software can sometimes interfere with the VPN connection, causing Error 809. \
• If the client and server have conflicting IP addresses or are on the same subnet, it can cause VPN Error 809.

To resolve this issue, check this possible solutions:

• The firewall or router is blocking the PPTP port (TCP port 1723) [Applicable to PPTP tunnel type]
• Verify that the client is using the correct username and password to connect to the VPN.
• A firewall or router blocks L2TP or IKEv2 port (UDP port 500, UDP port 4500). [Applicable to L2TP or IKEv2 tunnel types] 
• Try setting up an SSTP-based VPN tunnel on the VPN server and client to enable a VPN connection across the network if you cannot activate the port.

VPN Error 812:

This error usually pops up due to authentication issues between the client and the server.

There are several causes for this error, including:

• If the client is using incorrect login credentials, the server may reject the connection, resulting in VPN Error 812.
• If the client and server are using different authentication protocols.
• It could occure that the certificate used for authentication is invalid, expired, or not installed properly.
• Firewall or antivirus software can sometimes interfere with the VPN connection.

To resolve this issue, check this possible solutions:

• Temporarily disable the firewall or antivirus software to see if it is causing the issue. If so, add an exception for the VPN client in the software settings.
• Check that the client and server are using the same authentication protocol. For example, if the server is using PEAP, ensure that the client is also using PEAP.
• Check that the certificate used for authentication is valid, not expired, and installed properly on both the client and server.
• Verify that the client is using the correct username and password to connect to the VPN.

VPN Error 619:

Alert, alert! A connection to the remote computer could not be established, error 619 is a common VPN error. There might be a few reasons why you received this message especially if you’re a Windows 7 user. If a client device is attempting to establish a new connection to a VPN server or maybe because of a sudden disconnection to an active VPN session. Consider the following:

There are several causes for this error, including:

• The VPN server is not available or is unreachable.
• A firewall or other network device blocks the VPN connection.
• The VPN client software is not configured correctly.
• The internet connection is unstable or unreliable.

To resolve this issue, check this possible solutions:

• One at a time! When there are two or more VPN clients installed on your PC, make sure only one is running to avoid conflicts
• Temporarily disable firewalls and antivirus programs that may be hindering access to the VPN ports
• Try some other standard methods of troubleshooting. Reboot the client computer, delete and reconfigure the VPN, compare your setup to another computer or device on the same network, and see the difference
• Try connecting to the VPN using a different protocol, sometimes the system can encounter conflicts with some protocols, so give it a try.

VPN Error 628:

VPN Error 628 typically occurs when there are connection issues between the client and the server./

There are several causes for this error, including:

• The client and server are using different VPN protocols, such as PPTP and L2TP.
• A high volume of traffic on the network can cause connection issues.
• A firewall or antivirus software can sometimes block the VPN connection
• The dial-up settings on the client are incorrect.

To resolve this issue, check this possible solutions:

• Try to reduce network congestion by limiting bandwidth usage during the VPN connection or using a different network connection.
• Temporarily disable the firewall or antivirus software to see if it is causing the issue. If so, add an exception for the VPN client in the software settings.
• Verify that the client and server are using the same VPN protocol, such as PPTP or L2TP.
• Try to reduce network congestion by limiting bandwidth usage during the VPN connection or using a different network connection.

VPN Error 633:

An error message stating that the modem or other network equipment is already in use or not configured properly may be sent to the user when Error 633 occurs, making it impossible for them to establish a VPN connection. Error 633 is a common VPN error that typically occurs when there is a problem with the modem or other network devices.

This error can occur for a variety of reasons, such as:

• The modem or network device is not functioning properly.
• The modem device drivers are outdated or corrupt.
• The network device is not configured correctly.
• The internet connection is unstable or unreliable.

To resolve this issue, check this possible solutions:

• Restart the modem and other network devices.
• Update the modem and network device drivers.
• Disable any antivirus software that may be interfering with the network connection.
• Contact your internet service provider for assistance.

VPN Error 691:

A common VPN error, Error 691, often happens when a user's authentication credentials, such as their username or password, are incorrect. A VPN connection may not be possible when Error 691 occurs, and the user may also see an error message saying that user authentication failed.

There are several causes for this error, including:

• The username or password is incorrect.
• The authentication protocol is not configured correctly.
• The VPN connection settings are incorrect.
• The user account is locked or disabled.

To resolve this issue, check this possible solutions:

• Check the username and password and ensure they are correct.
• Reset the password and try again.
• Ensure the VPN connection settings are correct.
• Contact your VPN provider for assistance.

VPN Error 720:

VPN Error 720 typically occurs when there are issues related to the PPP (Point-to-Point Protocol) connection between the client and the server.

There are several causes for this error, including:

• The client and server are using different VPN protocols, such as PPTP and L2TP.
• The TCP/IP settings on the client are incorrect.
• Outdated or incompatible network drivers
• Firewall or antivirus software can sometimes block the VPN connection.

To resolve this issue, check this possible solutions:

• Verify that the TCP/IP settings on the client are correct, including the IP address, subnet mask, and gateway.
• Verify that the client and server are using the same VPN protocol, such as PPTP or L2TP.
• Ensure that the network drivers are up to date or reinstall them to fix any issues that may be causing Error 720.
• Temporarily disable the firewall or antivirus software to see if it is causing the issue. If so, add an exception for the VPN client in the software settings.

VPN Error 721:

An issue with the VPN server or the network configuration frequently results in Error 721, a prevalent VPN error. This problem may prevent the user from setting up a VPN connection and result in a warning claiming that the device is not responding.

There are several causes for this error, including:

• The VPN server is not responding or is unavailable.
• The VPN connection settings are incorrect.
• The firewall or other network device is blocking the VPN connection.
• The internet connection is unstable or unreliable.

To resolve this issue, check this possible solutions:

• Check the VPN server configuration and ensure it is set up correctly.
• Ensure the firewall settings allow VPN connections.
• Try using a different VPN server.
• Contact your VPN provider for assistance.

VPN Error 789:

The most prevalent VPN error, Error 789, usually happens when there is an issue with the VPN server or the VPN connection settings. An error notice stating that the L2TP/IPsec connection failed may be displayed to the user when Error 789 occurs, which may prevent them from creating a VPN connection.

This mistake has a number of reasons, including:

• The VPN server is not available or is unreachable.
• The VPN connection settings are incorrect.
• A firewall or other network device blocks the VPN connection.
• The VPN client software is not configured correctly.

To resolve this issue, check this possible solutions:

• Check the firewall settings and ensure the L2TP connection is allowed.
• Try using a different VPN server.
• Disable any antivirus software that may be blocking the L2TP connection.
• Contact your VPN provider for assistance.

VPN Error 412:

VPN Error 412 typically occurs when there are issues related to the VPN connection between the client and the server.

This mistake has a number of reasons, including:

• If there are issues with the network connectivity between the client and the server, it can result in Error 412
• The client is using incorrect login credentials, the server may reject the connection.
• Firewall or antivirus software can sometimes block the VPN connection
• There are issues with the VPN client software, such as outdated or corrupted files

To resolve this issue, check this possible solutions:

• Verify that the client is using the correct username and password to connect to the VPN.
• Check the network connectivity between the client and the server to ensure that there are no issues that may be causing Error 412.
• Temporarily disable the firewall or antivirus software to see if it is causing the issue. If so, add an exception for the VPN client in the software settings.
• Ensure that the VPN client software is up to date or reinstall it to fix any issues that may be causing Error 412.

Conclusion

In conclusion, VPNs have become crucial for preserving online privacy and accessing geographically restricted information. Although they are generally simple to set up and use, they aren't always ideal goods. Several variables may impact their performance, and problems and errors may occasionally occur. Some VPN issues that users may run across include Error 800, Error 619, Error 633, Error 691, and Error 721. But, these issues can be fixed by validating the login and password, troubleshooting the VPN connection, upgrading the modem and network device drivers, and reviewing the VPN server setup. Sometimes it may be essential to get in touch with the VPN provider's support staff.

Frequently Asked Questions

1. How do I resolve a VPN problem?

Your network connection may have temporary issues, which can result in errors. Wait a while before attempting to connect to VPN if you were previously successful on the same Wi-Fi network. Using network or firewall settings, some Wi-Fi networks impose restrictions on VPN use by disallowing VPN connections. 

2. What causes VPN errors?

Firewalls, blocked ports, older VPN software, and faulty routers can interfere with a VPN connection. Check how to start Fixing common VPN errors.

3. How do you refresh a VPN?

Ping packets between your device and the server are either lost or blocked, which is why this occurs. These packets may be filtered by a hardware or software router, or an unstable Internet connection may cause packet loss.

4. How can I check my VPN connection status?

You may examine whether your VPN service is effective at protecting you on a few specialized websites; Verify that your VPN is functioning properly working without disclosing any personal information. Check this blog for more information.

5. How do I automatically reconnect my VPN?

The Auto-connect function safeguards your traffic in the following ways when it is turned on: For complete VPN safety, auto-connect flags all new networks you join as "untrusted." The VPN will immediately connect to your computer when you join an "untrusted" network. Although it varies from provider to provider, this tool is often turned on by default.

Check more blogs related to VPN & its Errors!

- How to Choose a VPN

-Troubleshooting VPN Error 87: Resolving Common Causes and Solutions

- Troubleshooting VPN Error 619: Possible Causes and Solutions

- How To Create a VPN Connection on MacOS

- How A VPN Helps With Your Privacy