Windows Vista, Windows Server 2008, Windows 7, or Windows Server 2008 R2 may stop responding at the Welcome screen after you enter the user credentials to log on to the computer

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Article ID: 2526870 - View products that this article applies to.
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Symptoms

After you enter the user credentials to log on to your computer, the operating system may stop responding at the Welcome screen. This issue may occur on a computer that is running one of the following operating systems:
  • Windows Vista
  • Windows Server 2008
  • Windows 7
  • Windows Server 2008 R2

Cause

This issue occurs because of a deadlock in the Gpprefcl.dll file, the client implementation for group policy preferences (GPP). There is a conflict of the sequence when initializting the shell that GPP is doiing to get the shell folders.

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 website:
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 one of the following operating systems:
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
968849 How to obtain the latest service pack for Windows Server 2008
For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 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 Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (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
    6.0.600 2 . 22xxxWindows Vista and Windows Server 2008SP2LDR
  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are very important for maintaining 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 Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.0.6001.18664651,02406-Jul-201118:47x86
For all supported x64-based versions of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.0.6001.18664851,21606-Jul-201118:48x64
For all supported x86-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.0.6002.22648646,65620-May-201115:08x86
For all supported x64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.0.6002.22648845,82420-May-201115:24x64
For all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.0.6002.226481,672,19220-May-201115:21IA-64
Windows 7 and Windows Server 2008 R2 file information notes
  • 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
    VersionProductMilestoneService branch
    6.1.760 0.20xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are very important for maintaining 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
Gpprefcl.dll6.1.7600.20964584,19211-May-201104:40x86
Gpprefcl.dll6.1.7601.21725584,70411-May-201106:01x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.1.7600.20964784,89611-May-201105:12x64
Gpprefcl.dll6.1.7601.21725785,40811-May-201105:23x64
Gpprefcl.dll6.1.7600.20964584,19211-May-201104:40x86
Gpprefcl.dll6.1.7601.21725584,70411-May-201106:01x86
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Gpprefcl.dll6.1.7600.209641,503,23211-May-201104:05IA-64
Gpprefcl.dll6.1.7601.217251,503,74411-May-201104:07IA-64
Gpprefcl.dll6.1.7600.20964584,19211-May-201104:40x86
Gpprefcl.dll6.1.7601.21725584,70411-May-201106:01x86

Status

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

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot applicable
File size2,241
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameX86_50acad20b0b94d6259614ab06bedbbd4_31bf3856ad364e35_6.0.6002.22648_none_6c3389af296f7971.manifest
File versionNot applicable
File size711
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22648_none_399615765f590c84.manifest
File versionNot applicable
File size106,474
Date (UTC)20-May-2011
Time (UTC)15:29
PlatformNot applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameAmd64_afcb0794c2195fc427d4257dc0a5622c_31bf3856ad364e35_6.0.6002.22648_none_5949cecb846ff633.manifest
File versionNot applicable
File size1,072
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameAmd64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22648_none_95b4b0fa17b67dba.manifest
File versionNot applicable
File size106,510
Date (UTC)20-May-2011
Time (UTC)15:41
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,257
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameWow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22648_none_a0095b4c4c173fb5.manifest
File versionNot applicable
File size66,987
Date (UTC)20-May-2011
Time (UTC)15:19
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameIa64_9d7f9dc3ffc36f0e651eb140da6b8b65_31bf3856ad364e35_6.0.6002.22648_none_9fceffb43b53eb17.manifest
File versionNot applicable
File size1,070
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameIa64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22648_none_3997b96c5f571580.manifest
File versionNot applicable
File size106,492
Date (UTC)20-May-2011
Time (UTC)15:34
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,247
Date (UTC)20-May-2011
Time (UTC)17:39
PlatformNot applicable
File nameWow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22648_none_a0095b4c4c173fb5.manifest
File versionNot applicable
File size66,987
Date (UTC)20-May-2011
Time (UTC)15:19
PlatformNot applicable

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot applicable
File size2,350
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameX86_be74848e659e889bc7476e63470d437d_31bf3856ad364e35_6.1.7600.20964_none_811565ee21948779.manifest
File versionNot applicable
File size711
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameX86_ed02a6540902071337413e83bf5e1fc2_31bf3856ad364e35_6.1.7601.21725_none_d3f1bf5218a7f384.manifest
File versionNot applicable
File size711
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_37bdd0edc35dc9a7.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)05:13
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_39d06dedc062df26.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)06:32
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_10c1557c082de918ab0b36be7c258569_31bf3856ad364e35_6.1.7600.20964_none_b2d0db3d62157ef2.manifest
File versionNot applicable
File size715
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_5ce500101e95567d0391004754cd6b9f_31bf3856ad364e35_6.1.7601.21725_none_0b049664e0edd4cd.manifest
File versionNot applicable
File size715
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_8ec28e5e3b85d5b5569641cea812170b_31bf3856ad364e35_6.1.7601.21725_none_ca206f3f2a2e6a97.manifest
File versionNot applicable
File size715
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_bbdd6feb031b788c67f90bc929e39c92_31bf3856ad364e35_6.1.7600.20964_none_5531e4ba10b222f5.manifest
File versionNot applicable
File size1,070
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_be74848e659e889bc7476e63470d437d_31bf3856ad364e35_6.1.7600.20964_none_dd340171d9f1f8af.manifest
File versionNot applicable
File size713
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_cb199c037cd25193268b93d531928c16_31bf3856ad364e35_6.1.7601.21725_none_88826a4b387ea04d.manifest
File versionNot applicable
File size1,070
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_ed02a6540902071337413e83bf5e1fc2_31bf3856ad364e35_6.1.7601.21725_none_30105ad5d10564ba.manifest
File versionNot applicable
File size713
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_f7b3b06fbdfeeec9106368d0df2bbc31_31bf3856ad364e35_6.1.7600.20964_none_51875715700a3346.manifest
File versionNot applicable
File size715
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameAmd64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_93dc6c717bbb3add.manifest
File versionNot applicable
File size53,972
Date (UTC)11-May-2011
Time (UTC)06:11
PlatformNot applicable
File nameAmd64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_95ef097178c0505c.manifest
File versionNot applicable
File size53,972
Date (UTC)11-May-2011
Time (UTC)07:07
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size3,633
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameWow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_9e3116c3b01bfcd8.manifest
File versionNot applicable
File size34,836
Date (UTC)11-May-2011
Time (UTC)04:59
PlatformNot applicable
File nameWow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_a043b3c3ad211257.manifest
File versionNot applicable
File size34,836
Date (UTC)11-May-2011
Time (UTC)06:22
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_37bdd0edc35dc9a7.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)05:13
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_39d06dedc062df26.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)06:32
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_8c9c8ec5042c40186747f11e2cb09cad_31bf3856ad364e35_6.1.7600.20964_none_061b81a5a33d8b8d.manifest
File versionNot applicable
File size713
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameIa64_8edc224a316417c9f0414fbe0a395aea_31bf3856ad364e35_6.1.7601.21725_none_76d75faa1c35de5b.manifest
File versionNot applicable
File size713
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameIa64_be74848e659e889bc7476e63470d437d_31bf3856ad364e35_6.1.7600.20964_none_811709e421929075.manifest
File versionNot applicable
File size712
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameIa64_ed02a6540902071337413e83bf5e1fc2_31bf3856ad364e35_6.1.7601.21725_none_d3f3634818a5fc80.manifest
File versionNot applicable
File size712
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameIa64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_37bf74e3c35bd2a3.manifest
File versionNot applicable
File size53,970
Date (UTC)11-May-2011
Time (UTC)06:04
PlatformNot applicable
File nameIa64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_39d211e3c060e822.manifest
File versionNot applicable
File size53,970
Date (UTC)11-May-2011
Time (UTC)07:13
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,183
Date (UTC)11-May-2011
Time (UTC)08:39
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7600.20964_none_37bdd0edc35dc9a7.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)05:13
PlatformNot applicable
File nameX86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.1.7601.21725_none_39d06dedc062df26.manifest
File versionNot applicable
File size53,968
Date (UTC)11-May-2011
Time (UTC)06:32
PlatformNot applicable

Properties

Article ID: 2526870 - Last Review: May 22, 2014 - Revision: 5.0
Applies to
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Ultimate
  • Windows Vista Ultimate 64-bit Edition
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Foundation
  • Windows Server 2008 Standard
  • Windows Server 2008 Standard without Hyper-V
  • Windows Web Server 2008
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertisebeginner KB2526870

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