certificate for radius authentication not valid

Question

Hi everybody,

I configured a NPS server for Radius authentication for the Wifi network.

through the CA I issued a Certificate distributed on all clients.

the connection error "Event 12013 Wlan-AutoConfig 802.1x authentication of wireless network failed".

it shows up when I check the "use my windows user" falg.

Error details:

802.1x authentication of wireless network failed.

Network card: Intel(R) Wi-Fi 6 AX201 160MHz

Interface GUID: {9217eef0-3770-4601-b3f3-07b7a43df0b6}

Local MAC address: BC:F1:71:9F:50:FB

Network SSID: Name-WiFi

BSS Type: Infrastructure

Peer MAC address: 24:62:CE:7F:52:D1

Identity: DOMAIN\stage

User: internship

Domain: DOMAIN

Reason: Received explicit EAP error

Error: 0x80420400

EAP Reason: 0x80420400

EAP root cause string: Unable to connect to network The root certificate on the server required for authentication could not be found in the certificate store. Therefore, the network will not be trusted by the computer.

EAP error: 0x80420400

While if I manually enter the Domain\Username and password credentials, it logs in without problems.

Can anyone help me?

Thank you very much

Answer 1

Hi,

Thank you for posting your query.

Kindly follow the steps provided below to resolve your issue.

This article provides a solution to an issue where clients can't authenticate with a server after you obtain a new certificate to replace an expired certificate on the server.

Applies to: Windows 10 - all editions, Windows Server 2012 R2

Original KB number: 822406

Go to this link for your reference and other troubleshooting procedures https://learn.microsoft.com/en-us/troubleshoot/windows-server/windows-security/clients-cant-authenticate-server

Do not hesitate to message us if you need further assistance.

If the answer is helpful kindly click "Accept as Answer" and up vote it.