Article ID: 2487075 - Last Review: February 8, 2011 - Revision: 1.0

SCARD_E_NO_SERVICE error code is returned when you try to operate a desktop computer from an RDP session on a Windows Embedded CE 6.0 R3-based device

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SYMPTOMS

Consider the following scenario:

You develop a Windows Embedded CE 6.0 R3 OS design that includes the following Sysgen variables:
- SYSGEN_RDP
- SYSGEN_RDP_UI
- SYSGEN_RDP_SMARTCARD
Then, you run the generated image on a device.

Note A smart card reader is not connected to the device.
You enable the smart card redirection feature on the device.
You establish a Remote Desktop Protocol (RDP) session from the device to a desktop computer.
You try to use an application on the device that enables you to perform some action, through the RDP session, on the desktop computer. The application calls the SCardListReaders function.

In this scenario, the SCardListReaders function returns the SCARD_E_NO_SERVICE error code.

Note The SCardListReaders function is expected to return the SCARD_E_NO_READERS_AVAILABLE error code.

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RESOLUTION

Software update information

A supported software update is now available from Microsoft as Windows Embedded CE 6.0 Platform Builder Monthly Update (January, 2011). You can confirm this by scrolling to the "File information" section of this article. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is:

Product version-yymmdd-kbnnnnnn-processor type

For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows Embedded CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about obtaining Windows Embedded CE Platform Builder and core operating system software updates:

837392 (http://support.microsoft.com/kb/837392/ ) How to locate core operating system fixes for Microsoft Windows Embedded CE Platform Builder products

Note This Windows Embedded CE 6.0 Monthly Update is also available for download from the following Microsoft Download Center website:

Windows Embedded CE 6.0 Updates (http://www.microsoft.com/downloads/en/ResultsForProduct.aspx?productID=f8af6708-edcb-472a-829d-f73d951c35a1&stype=ss_sd&displaylang=en&nr=10&sortCriteria=Popularity&sortOrder=Ascending)

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

On the Build menu, click Clean Solution, and then click Build Solution.
On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package 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.

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File name	File size	Date	Time	Path
Windows embedded ce 6.0_update_kb2487075.htm	7,652	25-Jan-2011	20:06	110125_kb2487075
Rdrscard.lib	634,598	21-Jan-2011	15:49	Public\Rdp\Oak\Lib\Armv4i\Debug
Rdrscard.lib	465,840	21-Jan-2011	15:49	Public\Rdp\Oak\Lib\Armv4i\Retail
Rdrscard.lib	620,510	21-Jan-2011	15:50	Public\Rdp\Oak\Lib\Mipsii\Debug
Rdrscard.lib	461,926	21-Jan-2011	15:50	Public\Rdp\Oak\Lib\Mipsii\Retail
Rdrscard.lib	620,546	21-Jan-2011	15:51	Public\Rdp\Oak\Lib\Mipsii_fp\Debug
Rdrscard.lib	461,946	21-Jan-2011	15:50	Public\Rdp\Oak\Lib\Mipsii_fp\Retail
Rdrscard.lib	634,310	21-Jan-2011	15:52	Public\Rdp\Oak\Lib\Mipsiv\Debug
Rdrscard.lib	467,960	21-Jan-2011	15:51	Public\Rdp\Oak\Lib\Mipsiv\Retail
Rdrscard.lib	634,346	21-Jan-2011	15:52	Public\Rdp\Oak\Lib\Mipsiv_fp\Debug
Rdrscard.lib	467,980	21-Jan-2011	15:52	Public\Rdp\Oak\Lib\Mipsiv_fp\Retail
Rdrscard.lib	551,150	21-Jan-2011	15:53	Public\Rdp\Oak\Lib\Sh4\Debug
Rdrscard.lib	424,538	21-Jan-2011	15:53	Public\Rdp\Oak\Lib\Sh4\Retail
Rdrscard.lib	525,034	21-Jan-2011	15:49	Public\Rdp\Oak\Lib\X86\Debug
Rdrscard.lib	376,378	21-Jan-2011	15:48	Public\Rdp\Oak\Lib\X86\Retail

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File name	File size	Date	Time
Wincepb60-110125-kb2487075-armv4i.msi	797,696	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-mipsii.msi	787,968	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-mipsii_fp.msi	788,480	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-mipsiv.msi	791,040	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-mipsiv_fp.msi	791,552	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-sh4.msi	779,776	25-Jan-2011	20:12
Wincepb60-110125-kb2487075-x86.msi	740,864	25-Jan-2011	20:12

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STATUS

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

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WORKAROUND

To work around this issue, use one of the following methods:

Rebuild a corresponding OS design that also includes the Sysgen variable SYSGEN_SMARTCARD_SERIAL, and then run the generated Windows Embedded CE image on the device.
Connect a smart card reader to the device.
Disable the smart card redirection feature on the device.

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