Microsoft KB Archive/938114

= Error message after the certificates are updated on a Windows XP SP2-based client computer: &quot;Certificate cannot be found. 0x80090016&quot; =

Article ID: 938114

Article Last Modified on 6/27/2007

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APPLIES TO

 Microsoft Windows XP Service Pack 2, when used with:  Microsoft Windows XP Home Edition

 Microsoft Windows XP Professional 

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SYMPTOMS
Consider the following scenario. You have a wireless client computer that is running Microsoft Windows XP Service Pack 2 (SP2). You configure the computer to use Protected Extensible Authentication Protocol (PEAP) for the IEEE 802.1X authentication. The client computer connects to a certification authority (CA) server that is running Internet Authentication Service (IAS).

In this scenario, after you restart the client computer, Windows XP updates the certificates. However, when you try to connect to the wireless network, you may receive the following error message:

Certificate cannot be found. 0x80090016



CAUSE
This problem occurs for one of the following reasons:
 * The key container for the certificates does not exist.
 * You do not have access to the key container.
 * The Protected Storage service is not running.



RESOLUTION
To resolve this problem, follow these steps:  Grant Full Control permission to the System account and to the Administrators account for the following folder:

%Userprofile%\Application Data\Microsoft\Crypto\RSA\

</li> Grant Full Control permission to the System account and to the Administrators account for the following folder:

%Userprofile%\Application Data\Microsoft\SystemCertificates\My\Certificates

</li> Grant Full Control permission to the System account for the following folder and subfolders:

C:\Documents and Settings\All Users

</li> Start the Protected Storage service.</li></ol>

<div class="status_section">

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbexpertiseinter kbtshoot kbprb KB938114

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