VPN error 812, Connection prevented because of a policy configured on RAS/VPN server

There are several VPN errors, but unlike a lot of errors, VPN error 812 It's not very common that users can meet. However, the fact that it is an unusual problem does not mean that it can not be solved. In this blog, we will share with you some useful tips for correcting the VPN 812 error. Keep reading:

When you get this error, you will see the following message:

The connection was prevented because of a policy configured on your RAS / VPN server. Specifically, the authentication method used by the server to verify your user name and password may not match the authentication method configured in your connection profile. Please contact the remote access server administrator and inform them of this error.

The error usually prevents you from reestablishing a connection to the VPN after you have disconnected. As the message obviously indicates, the error is related to the RSA / VPN server.

Possible Causes of VPN Error 812

The 812 error is a technical problem mainly caused by the server side. Let's review the possible reasons for this error:

• This error code may appear when the client connection profile and server network policy do not match the authentication protocol.
• When NPS does not update the value added to the "Tunnel Type" condition in the network policy. This can be a complicated situation.

Whatever the cause, do not worry, there are some very simple steps to help you solve this error.

How to fix a VPN 812 error

If you want to fix error 812 – The connection has been prevented because of a policy configured on your RAS / VPN server, then you must try the following methods:

1. Configure external DNS
2. Check the parameters of the tunnel type
3. Contact your network administrator
4. Contact your VPN provider.

Let's look at these options in detail.

1) Configure the external DNS

To configure external DNS, follow these steps:

1) In the Windows search box, type "ncpa.cplAnd press'Enter & #39;

2) This brings you to see the 'network connections & #39;

3) Right click on the VPN connection you are currently using and click 'properties& #39; From option

4) Change the 'Primary DNS& #39; at & #39;Domain Controller"

5) Now configure the External DNS by accessing Secondary DNS

6) Change the scope of the Primary DNS at & #39;8.8.8.8 '

7) Check and apply the settings and to restart your VPN

Now check if the VPN error is corrected.

2) Check the tunnel type settings

If option 1 does not work in your case, you can try the following steps:

1) Get theL2TP OR PPTP'Value by selecting & #39;Tunnel type'The condition as additional value

2) Now type "Apply & #39; and close theNetwork Policy"

3) Try to connect the VPN client

4) Restore the network strategy to the ideal value for 'Tunnel type » The condition, here it is "PPTP"only

5) Select 'Apply & #39; and close theNetwork Policy"

Now, try to connect your VPN client. The above steps should have defined your network policy, confirming that the VPN is working properly.

3) Contact your network administrator

Sometimes a VPN 812 error can occur due to insufficient access rights.

In this case, it is advisable to contact your network administrator directly. Ask them to update your permissions and make sure all network protocol and authentication permissions are correct.

4) Contact your VPN provider

If none of the above solutions work, the best thing to do is to contact your VPN provider. Each VPN developer has a list of the most common issues that affect their products. Therefore, in most cases, they will understand the problem and will have a corresponding solution.

The aforementioned patches for virtual private network error 812 apply to Windows 10, Windows 8.1, Windows 8, Windows 7, and Windows XP.

Do you have any other workarounds for VPN 812 error? Share it with us in the comments section below!