Microsoft KB Archive/939682

= Error message when you try to log on to a computer that is running Windows XP SP2 by using a Remote Desktop Protocol connection: &quot;The system could not log you on&quot; =

Article ID: 939682

Article Last Modified on 9/11/2007

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APPLIES TO


 * Microsoft Windows XP Service Pack 2

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SYMPTOMS
On a computer that is running Windows Vista, you try to log on to a computer that is running Microsoft Windows XP Service Pack 2 (SP2) by using a Remote Desktop Protocol (RDP) connection. You access the RDP connection by using smart card authentication.

When you do this, the smart card authentication fails. Additionally, you receive the following error message:

The system could not log you on. An error occurred trying to use this smart card.

You can find further details in the event log. Please report this error to the system administrator.

Additionally, two events may be logged on the Windows XP SP2-based computer.

An event that resembles the following event may be logged in the Application log: Event Type: Error

Event Source: Smart Card Logon

Event Category: None

Event ID: 5

Date:

Time:

User: N/A

Computer:

Description: An error occurred while retrieving a digital certificate from the inserted smart card. The Smart card resource manager is not running.

An event that resembles the following event may be logged in the Security log: Event Type: Failure Audit

Event Source: Security

Event Category: Logon/Logoff

Event ID: 537

Date:

Time:

User: NT AUTHORITY\SYSTEM

Computer:

Description:

Logon Failure:

Reason: An error occurred during logon

User Name:

Domain:

Logon Type: 10

Logon Process: User32

Authentication Package: Kerberos

Workstation Name:

Status code: 0xC000006D



CAUSE
This problem occurs because the Windows XP SP2-based computer sends invalid data to the Windows Vista-based computer.



Hotfix information
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

Note Apply the hotfix to the Windows XP SP2-based computer.

Prerequisites
You must have Windows XP SP2 installed to apply this hotfix.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

Registry information
To use one of the hotfixes in this package, you do not have to make any changes to the registry.

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 item in Control Panel.

Windows XP SP2, 32-bit versions


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



MORE INFORMATION
For more information about software update terminology, 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: kbexpertisebeginner kbexpertiseadvanced kbfix kbpubtypekc kbqfe kbhotfixserver KB939682

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