NPS discarded the request EAP-TLS/PEAP

Marcus Wong Theen Nam 1,146 Reputation points
2021-11-22T06:07:03.297+00:00

I've setup a new Windows Server 2019 Std as Microsoft NPS server and registered it with Active Directory. My environment is as below:

  1. One Microsoft NPS server
  2. Multiple domains (Parent & Child)
  3. Microsoft NPS server installed in Child domain
  4. Accounting set to save log file in local host under C:\Logs

I've added all the RADIUS clients (Wireless Controller) into NPS server and configured the network policy to use EAP-TLS and I also tried with PEAP-MS-CHAPv2. When users connect to the Wireless SSID I can see the message in event log as "NPS Server discarded the request for a user". Error code is 1.

I went to configuring Accounting and set the path to local path & unchecked the "If logging fail, discard the request". Unfortunately, NPS server is still discarding the wireless request.

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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  1. Marcus Wong Theen Nam 1,146 Reputation points
    2021-11-22T09:57:11.41+00:00

    For anyone who is having the same issue, the resolution for me is to set the Extensible Authentication Protocol (EAP) service to Manual and run it. Initially it was disabled and I do not know why as well.

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  1. Limitless Technology 39,796 Reputation points
    2021-11-25T09:09:35.48+00:00

    Hi there,

    Yes exactly the solution is to set the Extensible Authentication Protocol (EAP) service to Manual and run it.

    The Reason Code 1 means that the connection request failed due to a Network Policy Server error.

    You can also get more info regarding this from this article

    https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-nps-extension

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