Microsoft KB Archive/825762

= Smart Card Logon for a Remote Access Connection Is Authenticated When You Use an Incorrect Personal Identification Number =

Article ID: 825762

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
In Microsoft Windows XP, when you use a smart card to re-establish a remote access connection to a server that uses the Extensible Authentication Protocol (EAP)/Transport Layer Security (TLS) authentication method, if you type an incorrect personal identification number (PIN), or if you type nothing when you are prompted for the smart card PIN, you may successfully log on.



CAUSE
This problem may occur when both of the following conditions are true:
 * 1) You try to re-establish the remote access connection during the same Windows XP logon session.
 * 2) The Cryptographic Service Provider (CSP) for the smart card does not verify the PIN every time it receives the PIN.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) 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.

x86
  Date         Time   Version        Size     File name 25-Sep-2003 12:14  5.1.2600.1275   92,672  Rastls.dll 25-Sep-2003 12:14  5.1.2600.0     136,704  Schannel.dll

IA-64
  Date         Time   Version        Size     File name 25-Sep-2003 12:19  5.1.2600.1275  281,088  Rastls.dll 25-Sep-2003 12:19  5.1.2600.0     508,416  Schannel.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbqfe kbwinxppresp2fix kbfix kbbug KB825762

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