Article ID: 913540 - View products that this article applies to.
Consider the following scenario. You have a client computer that is running Microsoft Windows XP Service Pack 1 (SP1). The hotfix that is described in one of the following Microsoft Knowledge Base articles is installed on this computer:
(http://support.microsoft.com/kb/826942/ )Wireless update rollup package for Windows XP is available
892087Additionally, this computer can connect to a wireless network server that is running Microsoft Windows Server 2003. After you create a wireless Group Policy object (GPO) on a computer that is running Microsoft Windows Server 2003, the Windows XP SP1-based client computer can no longer connect to the wireless network. Additionally, the following errors are logged in the Eapol.log file:
(http://support.microsoft.com/kb/892087/ )"At least one of your changes was not applied successfully to the wireless configuration" message when you try to add a wireless network to a Windows XP Professional-based computer
 11:49:02: ElGetUserIdentity: NULL sized EAP blob: continue  11:49:02: ElGetUserIdentity: Error in calling GetIdentity = 703
This problem occurs because the binary large object (BLOB) that is sent to the client computer does not contain information about Extensible Authentication Protocol (EAP) authentication. In other words, the EAP binary large object is null. The binary large object is provided by the wireless GPO.
Note When the binary large object is null, a computer that is running Windows XP SP2 can create a default binary large object to connect to the wireless network.
To resolve this issue, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 913540 - Last Review: October 11, 2007 - Revision: 1.8