Last updated on December 11th, 2021

Top 10 Most Common VPN Errors and How to Fix

Virtual Private Networks (VPNs) are quite frequently used by individual consumers and business companies for various purposes such as secure communication, accessing censor free content etc. Though most of the VPN servers offer robust and secure services, there are times when the users have to face minor bugs and errors while accessing VPN networks. This article will guide you some of these most common errors and suggest ways to fix them for good. Let’s get started –

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  1. VPN server not responding

If you’re having a problem connecting to your VPN server and the bug just won’t go away, you can try restarting your VPN software. It’s an old school method, but sometimes works just fine. If you are using VPN as a browser extension or plug-in, you can try restarting your browser altogether.

  1. Username and password not recognised

One of the most frequent errors is Error Code 691 better known as ‘Remote connection denied because the user name and password combination is not recognised. To fix this issue, make sure that you’re not making any kind of typo while typing out your login credentials. If you’re sure the error is not due to a typo, check if you’re using the correct domain or if your VPN access has been revoked by the provider itself. In either case, try connecting your VPN provider to resolve the issue.

  1. Internet  Service blocking VPN

Some browsers have built in functions to block any outsource communication service happening through them and end up blocking VPNs for the sake or user safety. If you’d like to see your browser work properly with a VPN plugin, try checking your firewall settings. Try disabling it for a while, to check if the VPN is no longer getting blocked but make sure to enable it once you’re done for the sake of your browser’s safety.

  1. VPN connection rejected

If your VPN connection request keeps getting rejected, you need to check the administrative settings of your VPN server. Open your server’s control panel and locate the Administrative tools icon followed by the Routing and Remote Access service icon. Make sure that the service is working just and fine. You can further check your DNS client settings. Also check your IP address settings and make sure there is no discrepancy there.

  1. Modem already in use/ not configured

Error code 633 states that ‘The modem or other connecting device is either already in use or not configured’. It can be a hectic and frustrating process to resolve this error. But don’t worry, we will suggest you the easy way out. On the page showing error, click on the Diagnostics button. The built-in diagnostic tool will open. Locate the Repair option and click on it. Try restarting your server and check if the error is fixed. If the issue still persists, you can try restarting the Remote Access Connection Manager service in the control panel settings. You can also try rebooting your system and the VPN connection.

  1. Unable to connect to VPN subsystem

This error can arise with Error Code  51 suggesting that there is a problem in connection with the VPN subsystem. Make sure there is at least one network interface connection that is active while you are trying to connect. You can try rebooting your server again or run the troubleshoot settings from the diagnostic options given in the server control panel.

  1. No PPP control configured

Another common problem in Error Code 720. It arises when the client connection lacks sufficient protocol support to communicate to the remote server or there are any corrupt miniports. To troubleshoot this error, open the device manager from the system configuration in the control panel. Here, uninstall all the miniport client adapters  and click Scan for hardware change. Reboot your VPN server and this should do just the trick for you to fix the issue.

  1. Connection failed due to security reasons

To get rid of Error Code 789, which is that the connection to VPN failed due to security reasons, check your router for the IPSec and L2TP protocols are enabled on your system. These protocols ensure proper secure connection to the remote server. You can also open the device manager and rest your system’s network adapter. Also, check the client DNS and certificate and also on the server side..

  1. The remote computer did not respond

The error occurs when the remote PPP peer (TCP port 1723 or GRE IP protocol packets) does not respond to your connection request. To fix the issue, check your router settings and make sure all the required PPTP ports are allowed. Also, check if your system’s firewall is not blocking the trafficking to the connection. Lastly, check that the pass-through option is enabled in the router settings. Reboot your VPN server once done and check if the error is gone. These simple steps might troubleshoot your connection very easily and allow smooth connection to remote servers.

  1. Slow Internet speed

If you are suffering from a slow and weak internet connection while connecting to your VPN server, the issue does not lie entirely with your system or connection. Sometimes it’s just because the VPN connection is a remote one and the data transfer is thus taking much longer time than usual. To fix this problem, make a wise decision and choose a server that is physically closer to your geolocation so that the connection speed can improve.

These were some of the VPN error codes and connection problems that we covered. The steps are easy and accurate if you follow them carefully. Make sure to troubleshoot your VPN software settings from time to time and check for bugs so that your VPN connection does not give any last time errors and allow stress free surfing and connection to your system.

Read Also : Fix Wifi Disconnected After Connecting to VPN