How to Fix VPN Connection Error 789 L2TP windows 7 – Root Cause and Solution

How to Fix VPN Connection Error 789 L2TP windows 7 – Root Cause and Solution

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Q1. How common is VPN Error 789?

A1. Almost all the VPN users experience VPN error 789 and frankly speaking there is nothing to be worried about because it is one of the most common VPN errors.


Q2. I am not a tech-savvy person. What should be my immediate response?

A2. If you ever get Error 789 on your system, always make sure to restart the VPN. Restarting the VPN would make it work most of the times.


Q3. I tried doing that but no luck. What now?

A3. If the error doesn’t go away, you should try the following steps.

How to Fix VPN Connection Error 789

**Important Note**

The following solution is for Windows 7 and Windows Vista users only.

  • Click on the Startup menu, located on the left bottom of your screen and type “services.msc” in the Search Box. When “Services” appear, right click on it and select “Run as Administrator”
  • Now find “IKE and AuthIP IPsec Keying Modules” and “IPsec Policy Agent”
  • Check the status, right click to “restart” if it states “started”
  • If the “started” option is disabled, enable it
  • Now right click and scroll down and click on Properties
  • Select the “Startup type” and change it to “Automatic” and save
  • Restart your VPN and it should work smoothly now


Q4. What causes the VPN Connection Error 789 in first place?

A4. If you are ever prompted with L2TP Error 789, it might be due to the fact that your system is not perfectly set up to get connected to an L2TP server. The connection attempt fails even before a connection is established with the server. VPN Error 789 is linked with incorrect configuration of user’s operating system.

Q5. What should I do if my problem remains unsolved?

A5. In case the Error 789 still exists, we advise you to contact your VPN service provider at earliest. Most of the VPN providers assist their users 24/7; you can contact them via Live Chat or Ticket system.

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Humayoun Khan

Humayoun Khan

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Humayoun Khan's Biography :

When Humayoun Ahmed Khan is not busy daydreaming about his ideal vacations, he likes to keep himself busy by learning and writing about latest technologies. New to the world of IT, still better than many who have been in this industry for years. Just kidding. He blogs here to bring the latest news from the virtual world.

7 Responses to How to Fix VPN Connection Error 789 L2TP windows 7 – Root Cause and Solution

  1. pawel says:

    Thanks for help but still no luck.. I don’t know what it might be maybe router is f***ed.. I think i have checked everything and now i can’t even connect from another laptop where it worked before.. weird. Thinking of buying new router and setting up VPN again.

  2. pawel says:

    In my case still doesn’t work even after turning off firewall.. the weird thing is that I can connect from some of the laptops and I can’t from others.. ;/ Any Ideas what it might be?

    • Usman Hayat says:

      Dear Pawel,
      Thanks for your valuable feedback,
      You may reboot and test your VPN service. If the problem persists, you should re-enable the IPsec service.
      In order to re-enable the IPsec service, you will have to perform the following process.

      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 should restart your computer after following the above procedure.

  3. Csmall says:

    This still did not fix the problem for me, I’m still getting error 789.

  4. lokesh says:


  5. Marcin says:

    I’ve got error 789 while having IPSec and L2TP passthrough blocked on my firewall – so the firewall is another possible reason.
    Best Regards,

    • VPNRanks says:

      Hey Marcin, thanks for the comment and suggestion. Firewall’s can definitely be another factor that tend to block L2TP/ IPSec passthrough. Good catch!

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