You are prompted to enter your PIN to connect to a Wi-Fi network on an SSO-enabled computer that is running Windows 7

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Article ID: 2549818 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:  
  • You use a Single Sign-On (SSO) smart card to log on a Windows 7-based computer in a domain environment. Therefore, you are automatically signed in to all applications that support smart card authentication.
  • You successfully log on to a computer that is running Windows 7 by using a smart card.
  • You try to connect to a wireless network that requires authentication.
In this scenario, you are prompted to enter your personal identification number (PIN) unexpectedly.

CAUSE

This issue occurs because the Rstls.dll component in Windows 7 does not support the EmptyPinType feature.

RESOLUTION

Hotfix information

A supported hotfix is 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 7 or Windows 7 Service Pack 1 (SP1). For more information about how to obtain a Windows 7 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 file information note
Important Windows 7 and Windows Server 2008 R2 updates are included in the same packages.
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.1.760 0 . 21xxxWindows 7 RTMLDR
    6.1.760 1 . 21xxxWindows 7 SP1LDR
  • The MANIFEST files (.manifest) that are installed for each environment are listed separately in the "Additional file information for Windows 7" section. MANIFEST files and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Rastls.dll6.1.7600.21011372,73619-Jul-201104:28x86
Rastls.dll6.1.7601.21773372,73619-Jul-201105:49x86
For all supported x64-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Rastls.dll6.1.7600.21011424,44819-Jul-201105:27x64
Rastls.dll6.1.7601.21773424,44819-Jul-201105:25x64
Rastls.dll6.1.7600.21011372,73619-Jul-201104:28x86
Rastls.dll6.1.7601.21773372,73619-Jul-201105:49x86

STATUS

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

MORE INFORMATION

Providers of smart cards can implement the EmptyPinType feature to provide a Single Sign-On experience. For more information about the EmptyPinType feature, visit the following Microsoft website:
Windows Smart Card Minidriver Specification
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

Additional file information

Additional file information for Windows 7

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_1a4de477b1c9469659fac748eb9ba5b8_31bf3856ad364e35_6.1.7600.21011_none_40f5646cb72d5bbe.manifest
File versionNot Applicable
File size694
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameX86_8443b22b09d3bea98c12d2c9119de85c_31bf3856ad364e35_6.1.7601.21773_none_18ca6be01a594eb4.manifest
File versionNot Applicable
File size694
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_6d0caec8ca60119a.manifest
File versionNot Applicable
File size4,741
Date (UTC)19-Jul-2011
Time (UTC)05:00
PlatformNot Applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_6eb454b8c7b52498.manifest
File versionNot Applicable
File size4,741
Date (UTC)19-Jul-2011
Time (UTC)06:26
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7
Collapse this tableExpand this table
File nameAmd64_264d20f4abfb9bf7993bb7fd2490c154_31bf3856ad364e35_6.1.7601.21773_none_8c8118949b9ef581.manifest
File versionNot Applicable
File size698
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameAmd64_746da7ecce83803e46e53a8b312a6461_31bf3856ad364e35_6.1.7601.21773_none_39e087d605c5c904.manifest
File versionNot Applicable
File size1,036
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameAmd64_a375b37ab4ecfb94f59461071ffc314c_31bf3856ad364e35_6.1.7600.21011_none_df8648aaf4a99743.manifest
File versionNot Applicable
File size698
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameAmd64_e0a505e55279ae62c7d3c378240633d1_31bf3856ad364e35_6.1.7600.21011_none_ac4c70a544257ec8.manifest
File versionNot Applicable
File size1,036
Date (UTC)19-Jul-2011
Time (UTC)10:39
PlatformNot Applicable
File nameAmd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_c92b4a4c82bd82d0.manifest
File versionNot Applicable
File size4,745
Date (UTC)19-Jul-2011
Time (UTC)06:02
PlatformNot Applicable
File nameAmd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_cad2f03c801295ce.manifest
File versionNot Applicable
File size4,745
Date (UTC)19-Jul-2011
Time (UTC)07:01
PlatformNot Applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_6d0caec8ca60119a.manifest
File versionNot Applicable
File size4,741
Date (UTC)19-Jul-2011
Time (UTC)05:00
PlatformNot Applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_6eb454b8c7b52498.manifest
File versionNot Applicable
File size4,741
Date (UTC)19-Jul-2011
Time (UTC)06:26
PlatformNot Applicable

Properties

Article ID: 2549818 - Last Review: October 13, 2011 - Revision: 1.0
APPLIES TO
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows 7 Ultimate
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced KB2549818

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