If attempting to connect a user tunnel, ensure the user account is a member of the AD group specified in the VPN policy on the NPS server.This is an error covered on the troubleshooting page of the Microsoft Documentation, but I wanted to add a few notes not mentioned there. This error is usually caused by the VPN client not being able to communicate with the VPN server. This error is usually caused when a custom IKEv2 security policy is specified and the VPN connection type is set to automatic. See this post and this post and this post for more information. This error can be caused by TLS 1.0 being disabled (Windows Server 2012 R2 and earlier) or by settings configured on the Dial-In tab of a user’s AD account. A full list of RRAS error codes can be found here. The events will have a source of RasClient. These errors can be found by looking in the Application event log on the client. The first thing I want to cover is the error codes you might encounter when attempting to establish a VPN connection. Links to each individual post in this series can be found below.Īlways On VPN – Certificates and Active DirectoryĪlways On VPN – VPN and NPS Server ConfigurationĪlways On VPN – Device Tunnel VPN Connection Error Codes Also, make sure to check out the troubleshooting section of the official Microsoft Documentation. In addition, I’ll share some useful commands and show to how monitor VPN connections. In this post I’ll be covering the common errors I’ve encountered while setting up Always On VPN. There are many issues that can happen while configuring and using an Always On VPN solution.

This post was updated on February 13th, 2021.

Rasclient error code 809