What is VPN error 789, and how can you fix it?
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A VPN is commonly used in our daily life, and quite a number of Internet users encounter various issues while trying to use this safer connection.

Then, this article will include the following points:

  • Common causes of VPN error 789
  • The best possible practices for fixing it and/or other similar VPN connection problems.
  • The rise in Web users needing a professional VPN service

VPN error 789 is an error that when you are trying to connect to L2TP, the L2TP connection attempt failed because the security layer encountered a processing error initial negotiations with the remote computer. The error may possibly occur when you establish a client session by using Windows 2000 Terminal Services.

(Credit: Kevintaber.com)

It means the connection is falling before a connection to the server is attempted as the operating system is not configured to connect to the L2TP server correctly. This is entirely a fault of the user’s operating system such as its location or connect type is no longer work.

What we can do when the connection showing with VPN error 789?

–The first thing you need to do is reboot and test the VPN, if it still gets error 789, please go to the next step.

–Re-enable IPsec Service

Open the Manager of your computer, click Services and Applications-Service-IPsec Policy Agent, open its Properties, choose its Startup type with Automatic, apply it. After this is done, it means your IPsec Service has been reset. You need to restart your computer before the next step.

–make the following changes to registry editor.

To search a document named Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\Parameters, to create a new DWORD (32-bit) Value under this catalog, rename it with ProhibitlpSec, right click to modify its Value data with 1. When finished this step, you need to restart your computer again to update the settings.

Remember: a VPN connection is quite useful and convenient for all of us to dig around the Internet, in the meantime, it could cause some problems, if you’ve made improper changes to it. However, it’s not a big deal, as for every complex problem there will be a solution that is concise, and clear. Just try the right solution so you safeguard your online activeties, privacy and more, again.

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