Event ID 2 reason-code 262 I cant authentica wifi users to widnows 2003 radius via Cisco 4400 Controller. Please help

The same setup has been working for 3 days. All of sudden, the user cannot authenticate. The user doesnt get prompted to enter username/domain when connecting to the wifi lan. What follows is the complete log of the error. There has been no changes to my setup. I am using a cisco 4400 controller and 1 LWAP access point by cicso. It connects to my radius server based on windows 2003

Please, any input in the matter is hjghly appreciated. I have been fighting with this for a few days and cannot get it resolved. Microsft knowledge base articles have not helped me any.

Server: Windows Server 2003 x64 SP1 or R2 Client: Windows XP Pro SP2 From time to time some of my XP SP2 clients fail to authenticate with IAS and thus end up working without WLAN. This is what I get in System log:

Event Type: Warning Event Source: IAS Event Category: None Event ID: 2 Date: 2007.02.09 Time: 13:49:46 User: N/A Computer: server Description: User host/pc1.firm.com was denied access. Fully-Qualified-User-Name = firm.com/computers/pc1 NAS-IP-Address = 10.19.247.234 NAS-Identifier = FIRM Called-Station-Identifier = 00-18-FE-D0-B0-39 Calling-Station-Identifier = 00-90-4B-B9-D3-A8 Client-Friendly-Name = FIRM Client-IP-Address = 10.19.247.234 NAS-Port-Type = Wireless - IEEE 802.11 NAS-Port = 0 Proxy-Policy-Name = Use Windows authentication for all users Authentication-Provider = Windows Authentication-Server = Policy-Name = WLAN Authentication-Type = PEAP EAP-Type = Reason-Code = 262 Reason = The supplied message is incomplete. The signature was not verified.

Reply to
El CiD
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This will fix it.

  1. Click Start, and then click Control Panel.
  2. Double-click Network Connections.
  3. Right-click the connection that you use to connect to the Windows Server 2003-based computer, and then click Properties.
  4. On the Authentication tab, click Properties.
  5. Click to clear the Validate server certificate check box.
Reply to
brentbaxter

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