| Event Id | 2 |
| Source | IAS |
| Description | User <username> was denied access. Fully-Qualified-User-Name = <domain>/<OU or container>/<username> NAS-IP-Address = <ip address> NAS-Identifier = <not present> Called-Station-Identifier = <not present> Calling-Station-Identifier = <ip address> Client-Friendly-Name = <IAS Client name> Client-IP-Address = <ip address> NAS-Port-Type = Virtual NAS-Port = 131 Policy-Name = Allow access if dial-in permission is enabled Authentication-Type = PAP EAP-Type = <undetermined> Reason-Code = 66 Reason = <reason> |
| Event Information | When you configure a client computer to use IEEE 802.1x authentication, you may find that you cannot connect to a Microsoft Windows Server 2003-based computer that is running Internet Authentication Services (IAS). You may receive this error message in the application event log on the Windows Server 2003. CAUSE: The issue that is described in the "Symptoms" section may occur if both of the following conditions are true: IAS is installed on the Windows Server 2003-based computer. The Trusted Root CA certificate is not installed on the client computer. RESOLUTION: To resolve this issue, follow the appropriate method: Method 1: Disable certificate validation on the client computer Method 2: Install the trusted root certification authority on the client computer. |
| Reference Links | 802.1x client authentication fails when you connect to a Windows Server 2003-based computer that is running IAS |
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