Method 1: Deleting Virtual Network Connections
Most virtualization applications use software tools for internet forwarding to guest systems. They can conflict with VPN connections, which leads to the error under consideration. Troubleshooting Problem Simple - All adapters created by virtualization managers should be deleted.
- Open the "Run" using the Win + R keys by the combination of the Win + R keys, then enter the NCPA.CPL query in it and click OK.
- In the network connections window, find all positions that match the adapters of virtual machines - an example of those such as you can observe the screenshot below.
- After defining all the required items, click on one right of the right mouse button and use the Delete item. Do not worry - the next time you start the corresponding virtual machine, the compound will be created again.
- Repeat the previous step for all the spent connections that found.
After performing this operation, try connecting to your VPN network, now the error should not occur. Alas, but it works far from each type of virtual adapters - if the removal parameter is not available, you will have to erase the guest OS associated with it, or uninstall the virtual machine.
Method 2: Troubleshooting Firewall Problems
An error with code 806 also occurs due to the actions of a system or third-party firewood, for example, if the corresponding compounds are prohibited. In this case, this software will be required to be adjusted accordingly.Read more: Setting up the system firewall in Windows 10
If, in addition to the system network screen, a solution built into the antivirus is used, it is most likely to be disconnected, since in most cases the fine tuning of third-party firewood is not provided.
Read more: How to turn off the antivirus
The problem can also be in a too strict policy of connections used in the network router - check the parameters and change them if necessary.
Read more: Setting the firewall in the router
Method 3: Switching authentication method
The last reason for which an error with code 806 may occur is the inconsistency of the authorization option of the connected user. In this case, the unsupported protocol should be removed, but it should be borne in mind that this procedure will significantly reduce the security of the compound. If you are ready to come to terms with such a risk, follow these steps:
- Open connections settings (see method 1) and find among them that used by VPN. Click on it right-click and select "Properties".
- In the window that opens, go to the Safety tab.
- Find the Password Check Protocol (CHAP) item, remove the mark from it and click OK.
Record to the network with new settings - this time no errors should no longer occur.