Event ID 15506 — Wired Network Authentication

Updated: April 17, 2008

Applies To: Windows Server 2008

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Wired Network Authentication consists of the 802.1X-based authentication settings that are applied to network adapters. The settings are required to connect to a specific IEEE 802.3 Ethernet network on which 802.1X authentication is performed.

Event Details

Product: Windows Operating System
ID: 15506
Source: Microsoft-Windows-Wired-AutoConfig
Version: 6.0
Symbolic Name: BlockedStateEnterEventDesc
Message: Network authentication attempts have been temporarily suspended on this network adapter.

%tNetwork Adapter: %2
%tInterface GUID: %1
%tReason Code: %3
%tLength of block timer (seconds): %4

Resolve

Connect the computer to an 802.1X-enabled network

"Network authentication attempts have been temporarily suspended on this network adapter" errors

One of the following conditions typically cause this error:

  • Reason Code: 327682   Event log message:  The profile specifies that 802.1X should be enforced, but no 802.1X peer was found.   # def name:  ONEX_IDENTITY_NOT_FOUND  
  • Reason Code:  282626   Event log message:   802.1X authentication failed to complete in the stipulated time. 802.1X authentication did not complete within configured time.   # def name:  WLAN_REASON_CODE_MSMSEC_AUTH_SUCCESS_TIMEOUT  

Correcting "Network authentication attempts have been temporarily suspended on this network adapter" errors

Perform the following step:

  • Connect the computer to an 802.1X-enabled network.

Note: If you are using an Extensible Authentication Protocol (EAP) authentication method that requires user input for credentials (such as PEAP-MS-CHAP v2, which requires the user to manually type their user name and password), the network administrator might need to configure 802.1X settings on the 802.1X switch to allow enough time for the user to submit the credentials before terminating the authentication and rejecting the connection attempt. This time-out setting for user input during 802.1X authentication is sometimes referred to as a "client time-out period." See the documentation for your 802.1X switch for the name of this setting and how to change it. A recommended value for this time-out is 30 seconds.

Verify

Verify 802.1X wired security settings are applied

There are two methods to verify that wired security settings are applied:

To perform these procedures, you must be logged on by using an Administrator account, or you must have been delegated the appropriate authority.

  • Verify wired security settings by using the netsh lan command
  • Verify wired security settings by using the status of a local area connection

Verify wired security settings by using the netsh lan command

To verify wired security settings by using the netsh lan command

  1. Click Start, and in Start Search, type cmd, and then press ENTER.
  2. At the command prompt, type netsh lan show interfaces.
  3. If 802.1X is configured on the network adapter, the command returns a result indicating that 802.1X security settings are applied.

Verify wired security settings by using the status of a local area connection

To verify wired security settings by using the status of a local area connection

  1. Click Start, click Control Panel, and then click Network and Internet.
  2. Click Network and Sharing Center, and then in Tasks, click Manage network connections.
  3. Right-click the local area connection, select Properties, and then select the Authentication tab.
  4. If 802.1X is configured on the network adapter, Enable IEEE 802.1X authentication is selected, but blocked from user modification.

Related Management Information

Wired Network Authentication

Networking

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