Microsoft KB Archive/890937

= Computer authentication cannot complete successfully when you use a smart card to log on to a wireless network in Windows XP =

Article ID: 890937

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
Computer authentication cannot be completed successfully when you use a smart card to log on to a wireless network (802.1X). However, user authentication is successful.



CAUSE
This problem occurs because the computer cannot access the computer certificate from the smart card during the computer startup process.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
There are no prerequisites to install this hotfix.

Restart information
You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix is not replaced by any later hotfix.

Registry information
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To enable this hotfix, follow these steps:  Click Start, click Run, type regedit, and then click OK. Locate and then click to select the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\PPP\EAP\13

 After you select the key that is specified in step 3, on the Edit menu, point to New, and then click DWORD Value. Type UseSoftTokenWithMachineAuthentication, and then press ENTER. Right-click UseSoftTokenWithMachineAuthentication, and then click Modify. In the Value data box, type 1, and then click OK.</li> Quit Registry Editor.</li></ol>

Note After you install this hotfix, when you use a smart card as an authentication method, Windows will access the computer certificate from the HKEY_LOCAL_MACHINE hive in the Windows Registry instead of trying to access the certificate from the smart card.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

<pre class="fixed_text">  Date         Time   Version        Size     File name --  30-Dec-2004  01:14  5.1.2600.2587  112,640  Rastls.dll

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

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MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbqfe kbhotfixserver kbwinxppresp3fix kbfix kbbug KB890937

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