Fix any VPN error on Windows 10 in just a couple of steps

Milan Stanojevic
by Milan Stanojevic
Deputy Editor
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VPN errors on Windows 10

Many users are concerned about their online privacy, and in order to protect it, they tend to use VPN tools.

VPN software can be great, but sometimes you can encounter errors with your VPN program, and today we’re going to show you how to fix VPN errors on Windows 10.

How can I fix VPN errors on Windows 10?

Table of contents:

  1. General guide to fix VPN errors
  2. VPN error 807 Windows 10
  3. VPN error 619 Windows 10
  4. VPN error 812 Windows 10
  5. VPN error 720 Windows 10
  6. VPN error 721 Windows 10
  7. VPN error 412 Windows 10
  8. VPN error 691 Windows 10

Fix: general VPN errors on Windows 10

1. Make changes to your registry

Users reported Failed to initialize connection subsystem error on their PC while trying to use Cisco VPN software, but you can easily fix this problem simply by adding one value to your registry.

Before we start changing the registry, we have to warn you that modifying the registry can lead to all sorts of problems, therefore it’s recommended that you create a backup of your registry before you continue.

To fix this problem, you need to do the following:

  1. Press Windows Key + R and enter regedit. Press Enter or click OK.
    vpn-error-regedit-1
  2. When Registry Editor opens, go to HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settings key in the left panel.
  3. Right click Internet Settings key and choose New > Key from the menu.
    vpn-error-regedit-2
  4. Enter GlobalUserOffline as the name of the new key and select it.
  5. In the right pane, double click the (Default) DWORD to open its properties.
  6. Enter 1 in the Value data field and click OK to save changes.
    vpn-error-regedit-3
  7. After doing that, close Registry Editor and check if the Cisco software is working properly.

If you can’t edit your Windows 10’s registry, read this handy guide and find the quickest solutions to the issue.


2. Run Cisco AnyConnect in Compatibility mode

Compatibility mode is a great feature that allows you to run older software on Windows 10 without any problems. To do that, you need to follow these simple steps:

  1. Locate Cisco AnyConnect shortcut, right click it and choose Properties.
  2. Go to Compatibility tab.
  3. Check Run this program in compatibility mode for and select any older version of Windows.
    vpn-error-compatibility-1
  4. Click Apply and OK to fix the problem.

After turning on compatibility mode the issue with Cisco AnyConnect should be resolved. Few users reported that this issue can also be solved by running the setup file in compatibility mode, so you might want to try that as well.


You can secure yourself by installing a compatible and reliable VPN that doesn’t bother you with errors. In this case, we strongly recommend Cyberghost (currently 77% off) – a leader in the VPN market. It protects your PC from attacks while browsing, masks your IP address and blocks all unwanted access and works flawlessly.


3. Delete the WAN Miniport (IP), WAN Miniport (IPv6) and WAN Miniport (PPTP) devices

Certain devices, such as WAN Miniport, can interfere with built-in Windows VPN feature and cause all sorts of problems to appear.

Users reported A Connection to the remote computer could not be established error while trying to use VPN on Windows 10, and one of the suggested solutions is to delete all WAN Miniport devices.

To do that, follow these steps:

  1. Press Windows Key + X to open Win + X menu. Choose Device Manager from the list.
    vpn-error-device-1
  2. When Device Manager opens, go to View > Show hidden devices.
    vpn-error-device-2
  3. Locate all WAN Miniport devices and delete them.
  4. After deleting all Miniport devices your VPN connection should start working without any problems.

4. Install Cisco VPN tool properly

Users reported that they are getting Cisco VPN error 27850 during the installation, and one way to fix this problem is to properly install the tool. To do that, follow these steps:

  1. Download the latest Cisco VPN software. Don’t run the setup file yet.
  2. Download DNE software from Cisco and install it. Make sure to download 32-bit or 64-bit version so it matches your operating system.
  3. Install the DNE software.
  4. After that, install Cisco VPN.

Users also reported error 442 which means that Virtual Adapter couldn’t be enabled. To fix this problem, simply open the Registry Editor and follow these steps:

  1. Go to the HKLMSYSTEMCurrentControlSetServicesCVirtA key in the left panel.
  2. Double click the DisplayName string in the right panel and change its value to Cisco Systems VPN Adapter for 64-bit Windows.
  3. Close Registry Editor and check if the problem is resolved.

Can’t access the Registry Editor? Things aren’t as scary as they seem. Check out this guide and solve the issue quickly.


5. Use Microsoft CHAP Version 2

You can fix some errors with your VPN simply by allowing certain protocols. Users reported that they fixed the problem with VPN connection by following these steps:

  1. Locate your VPN connection, right click it and choose Properties from the menu.
  2. When Properties window opens, go to Security tab, select Allow these protocols and check Microsoft CHAP Version 2 (MS-CHAP v2).

After enabling Microsoft CHAP Version 2, your VPN should start working without any problems.


6. Diagnose and disable your connection

One way to fix problems with VPN is to diagnose your connection. By diagnosing your connection Windows 10 will fix some of the common VPN errors. To do that, follow these steps:

  1. Press Windows Key + X and select Network Connections from the menu.
  2. When Network Connections window opens locate your VPN connection, right-click it and choose Diagnose from the menu.
    vpn-error-network-1
  3. Wait for the scan to finish.
  4. If the problem still persists, right-click the VPN connection and choose Disable.
    vpn-error-network-2
  5. Wait for a few seconds and enable your VPN connection by following the same steps.

This is a simple solution and few users reported that it worked for them, so you might want to try it out.


7. Uninstall Citrix DNE Updater

If you’re using Cisco’s IPSEC VPN client, you can fix many errors simply by uninstalling Citrix DNE Updater.

After uninstalling this tool, download and install SonicWall VPN 64-bit Client from Dell. After doing that, the issue with VPN should be completely resolved.


Want to completely remove an app from your PC? Use on of these amazing uninstallers for Windows 10.


Editor’s Note: This article continues on the next page. Need more guides? Visit our dedicated VPN Guide Hub.