Proven Solutions for Secure VPN Connection Terminated Locally by the Client Erro

These days, using a secure VPN is pretty easy. Nevertheless, a secure VPN connection terminated locally by the client is the kind of issue that anyone can face. There are a few issues related to VPN terminated by peer that you might experience as well. If you are already having problems with your VPN connection, then you have come to the right place. In this post, we will discuss some common issues regarding secure VPN connection terminated locally by the client, their causes, and solutions.

Part 1: Fix secure VPN connection terminated locally by the client reason 442

One of the most common issues that are faced by us while using a VPN is “Secure VPN connection terminated locally by the client reason 442”.

secure VPN connection terminated locally by the client reason 442

It happens when there is a problem with the virtual adapter in your system. Therefore, if the network adapter is not able to function properly, then it can give the secure VPN connection terminated locally by the client reason 442. It is also usually related to a Cisco Systems VPN Adapter. Though, it can be fixed by following these solutions:

Solution 1: Disable the Cisco VPN Adapter

If you don’t want to use the Cisco VPN Adapter, then follow these steps to fix secure VPN connection terminated locally by the client reason 442 error.

  • 1. Firstly, go to the Control Panel on your system and visit its Network Settings.
  • 2. From here, you can go to the Adapter Settings.
  • 3. Select the Cisco Adapter and right-click it.
  • 4. If it is enabled, you need to disable the Adapter and try connecting to your VPN.

local area connection

Solution 2: Diagnose the issue

If you don’t want to disable it, then you can follow these steps to diagnose the error and reset your router.

  • 1. Go to Control Panel > Network Settings > Adapter Settings.
  • 2. Select the Cisco Adapter and enable it if it is already disabled.
  • 3. Right-click it again and click on the “Diagnose” button.
  • 4. This will automatically provide a fix to your problem.
  • 5. Mostly, it can be resolved by resetting the router. Once you have reset it, you can try connecting it again.

Solution 3: Edit the Registry file

You can also edit the Virtual Adapter Registry to fix the secure VPN connection terminated locally by the client reason 442 issue.

  • 1. Go to the start menu and type “regedit”. You can also give this command on the Run Prompt to launch the Registry Editor.
  • 2. Once the Registry Editor is launched, go to HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > CVirtA.
  • 3. From here, you need to identify the “DisplayName” string.
  • 4. Select it and choose to “Modify” it.
  • 5. Go to the Value Data field and remove the “@oemX.inf,%CVirtA_Desc%;.” Part. The value should be “Cisco Systems VPN Adapter for 64-bit Windows” (for 64-bit systems).

change value data

6. Simply save your changes, exit the Registry Editor, and try to reconnect the VPN.

save value data changes

By following these solutions, you would certainly be able to resolve a problem like secure VPN connection terminated locally by the client reason 442.

Part 2: Fix secure VPN connection terminated locally by the client reason 412

Just like 442, another related problem that is faced by users is “secure VPN connection terminated locally by the client reason 412”. The reason for this is pretty similar to the error 442. It mostly happens when the VPN terminated by peer (remotely).

Though, if we further diagnose this problem, then the secure VPN connection terminated locally by the client reason 412 can occur due to following reasons:

  • • Hardware problem with network card or connection
  • • TCP or IP ports are not available at the moment
  • • Blocked by the firewall
  • • Delay or packet loss due to poor connection
  • • Client computer is inaccessible or secure
  • • Remote peer is not responding
  • • ESP or UDP ports are blocked, etc.

To start with, you can follow the above-mentioned solutions to fix the secure VPN connection terminated locally by the client reason 412 error. If it won’t work, then follow these suggestions:

Solution 1: Use Ethernet

If the VPN terminated by peer remotely, then you can try to connect it via Ethernet or USB port. Using a LAN connection might automatically fix this issue.

Solution 2: Turn the firewall off

If the native firewall settings are causing the issue, then go to the Windows Security > Firewall Settings and manually turn it off. If you are using Windows Defender or any third-party tool, then you would have to temporarily switch it off as well.

windows security and firewall settings

Solution 3: Enable NAT-T/TCP

If you are using an older system, then you need to go to the network profile and manually enable the transparent tunneling option. Make sure the TCP port is 10000 is you are using IPSec over TCP. You should also update the ForceKeepAlive field to 1 (and not 0).

enable net-t/tcp

In this way, you would certainly be able to resolve the secure VPN connection terminated locally by the client reason 412 problem.

Part 3: Fix secure VPN connection terminated by peer reason 433

Another common issue that is faced while using a VPN is secure VPN connection terminated by peer reason 433. This usually happens when the IPSec connection is not supported by VPN, when a VPN peer doesn’t respond, or when VPN terminated by peer unexpectedly. 

secure VPN connection terminated by peer reason 433

You can resolve this issue by following these solutions.

Solution 1: Authenticate the AAA server

In order to fix the secure VPN connection terminated by peer reason 433, you need to make sure that the AAA server is working. Go to the Cisco profile and visit its Configuration tab. Go to Device Management > Users/AAA > AAA Server Groups. Select the server and click on the “Test” button to check its functioning.

cisco profile configration

Solution 2: Use the debug crypto command

Simply launch the Command Prompt (as administration) and run the debug crypto command. It has several conditions that will let you check whether the socket and the connection are working in an ideal way or not.

use th debug crypto command

Solution 3: Disable Threat Detection

Also, you can go to the Firewall settings and make sure that the Threat Detection feature is turned off for a while. After making the changes, restart your system and try connecting it to the VPN again.

disable threat detection

Just like 412, the secure VPN connection terminated by peer reason 433 can also happen due to a firewall settings conflict. Therefore, you should turn it off and ensure that the VPN terminated by peer doesn’t take place by having a secure connection.

Part 4: Bypass all VPN connection termination issues with a 3rd-party VPN program

The traditional way to set up VPN on your computer is prone to many VPN connection termination issues. The root cause is all the clashes that happen between your VPN client and PC settings. What's worse, fixing all the VPN connection termination issues is not that easy. There are so many parameters that only tech-savvy guys can deal with.

Luckily, there are many 3rd-party VPN programs like NordVPN that can bypass all the VPN connection termination issues.

The VPN program has versions for all Windows and Mac computers, as well as Android and iOS devices. The setup is as easy as a 1-2-3 click-though process.

Video guide: Set up NordVPN program with ease

By following these solutions, you would certainly be able to fix various issued related to the secure VPN connection terminated locally by the client. If you are still facing any issue while using a VPN, then let us know about it in the comments below.

Product-related questions? Speak directly to our Support Team >>

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