Getting VPN error 806 with Windows 10 client and Windows 2019 Essential

Ronald Bellefeuille 1 Reputation point
2020-09-01T17:55:43.857+00:00

My VPN server is configured on the AD Server. Small business (6 persons) but need to connect via VPN (PPTP) and some PC works and some doesn't, so i'm gessing that the Router and the Firewall are not the problem since some PCs are able to connect.

Any ideas ?

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
3,479 questions
Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
2,276 questions

1 answer

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  1. Gloria Gu 3,891 Reputation points
    2020-09-02T03:12:12.097+00:00

    Hi,

    In regards to your issue, here're my suggestions:

    After my research for related information, this error indicates a router firewall is preventing some VPN protocol traffic between client and server. Most commonly, it is TCP port 1723 & 47(GRE) that is at issue and must be opened by the appropriate network administrator.

    You may try the following steps：
    Open the VPN server's Windows Defender Firewall with Advanced Security. Click the inbound rules on the left side of the screen. Click Action > New Rule

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    But if your VPN server is behind NAT, you should configure port forwarding. Because the NAT device will block the traffic. For more details, please refer to:
    https://www.asus.com/us/support/FAQ/1033906/

    -------If my answer is helpful to you, please remember to mark them as answer. Thank you!------

    Regards
    Gloria