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IAS Event ID 3 - Reason-Code = 4

Active Directory, Domain, DNS, WINS, DHCP, SBS, New Releases.

IAS Event ID 3 - Reason-Code = 4

Postby guest » Thu Nov 13, 2008 4:01 pm

Situation: when a laptop rties to establish WPA Enterprise wireless, the IAS logs event ID 3 as following.
Event Type: Error
Event Source: IAS
Event Category: None
Event ID: 3
Date: 10/31/2008
Time: 1:31:15 PM
User: N/A
Computer: DEVICES1
Description:
Access request for user host/002236.chicagotech.net was discarded.
Fully-Qualified-User-Name = <undetermined>
NAS-IP-Address = 10.0.20.53
NAS-Identifier = Outdoor_1300_1
Called-Station-Identifier = 001b.2ad5.8300
Calling-Station-Identifier = 0019.d279.331c
Client-Friendly-Name = Non-Root Bridge
Client-IP-Address = 10.0.20.53
NAS-Port-Type = Wireless - IEEE 802.11
NAS-Port = 259
Proxy-Policy-Name = Use Windows authentication for all users
Authentication-Provider = Windows
Authentication-Server = <undetermined>
Reason-Code = 4
Reason = The Active Directory global catalog cannot be accessed.

Causes: 1. The laptop or AP can't access the GC server.

2. The user logon the laptop using local username, which deosn't get authentication.
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