Article ID: 2724781 - View products that this article applies to.
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Symptoms

A computer that is running Windows 7 or Windows Server 2008 R2 stops responding randomly. Additionally, you receive a Stop error message that resembles the following:
STOP 0x0000008E (parameter1, parameter2, parameter3, parameter4)

Notes
  • This Stop error describes a KERNEL_MODE_EXCEPTION_NOT_HANDLED issue.
  • The parameters in this error message vary, depending on the configuration of the computer.
  • Not all "0x0000008E" Stop errors are caused by this issue.

Cause

This issue occurs because of a race condition in the Win32k.sys module.

Resolution

Hotfix information

Important This hotfix has been re-released to address an issue in which the digital signature on files produced and signed by Microsoft will expire prematurely, as described in Microsoft Security Advisory 2749655.

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 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 7 or 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 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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, 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 0.17xxxWindows 7 and Windows Server 2008 R2RTMGDR
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.17xxxWindows 7 and Windows Server 2008 R2SP1GDR
    6.1.760 1.22xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • 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 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. 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
Win32k.sys6.1.7600.170822,344,44821-Jul-201215:10x86
Win32k.sys6.1.7600.212832,353,66421-Jul-201215:10x86
Win32k.sys6.1.7601.179112,345,98420-Jul-201216:28x86
Win32k.sys6.1.7601.220672,354,17620-Jul-201216:27x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.1.7600.170823,146,75221-Jul-201215:32x64
Win32k.sys6.1.7600.212833,150,84821-Jul-201215:34x64
Win32k.sys6.1.7601.179113,148,80020-Jul-201216:58x64
Win32k.sys6.1.7601.220673,151,87220-Jul-201216:52x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Win32k.sys6.1.7600.170827,450,62421-Jul-201214:42IA-64
Win32k.sys6.1.7600.212837,456,25621-Jul-201214:52IA-64
Win32k.sys6.1.7601.179117,443,45620-Jul-201216:10IA-64
Win32k.sys6.1.7601.220677,449,08820-Jul-201216:23IA-64

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 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-bf.mum
File versionNot Applicable
File size2,719
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,773
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameX86_22637a2d759d9b2d7b4f0772aabad34c_31bf3856ad364e35_6.1.7600.17082_none_39cc6afa16164ec0.manifest
File versionNot Applicable
File size694
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameX86_91e711f2d70712cadf9d977c2b8410f0_31bf3856ad364e35_6.1.7600.21283_none_9a665e2901bfc744.manifest
File versionNot Applicable
File size694
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameX86_9da14243adc658cc8feb89afaa1bdf45_31bf3856ad364e35_6.1.7601.22067_none_f1c8bad78370d4fd.manifest
File versionNot Applicable
File size694
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameX86_c3e07276b02c06bcaa777ccd5393e28e_31bf3856ad364e35_6.1.7601.17911_none_9d75ef9e4fe3d16b.manifest
File versionNot Applicable
File size694
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.17082_none_b8c6b285fbdd3558.manifest
File versionNot Applicable
File size42,086
Date (UTC)21-Jul-2012
Time (UTC)17:40
PlatformNot Applicable
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.21283_none_b951518114f9eba0.manifest
File versionNot Applicable
File size42,086
Date (UTC)21-Jul-2012
Time (UTC)17:36
PlatformNot Applicable
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.17911_none_baf7ea5ff8cb8b62.manifest
File versionNot Applicable
File size42,086
Date (UTC)20-Jul-2012
Time (UTC)18:55
PlatformNot Applicable
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.22067_none_bb514f87120c8506.manifest
File versionNot Applicable
File size42,086
Date (UTC)20-Jul-2012
Time (UTC)19:05
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_0155c66f58e78ce2f3253917344d0c3d_31bf3856ad364e35_6.1.7600.21283_none_4a4b7a3926740abd.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_12e9331ff4f77c71e870a0a27960cdb2_31bf3856ad364e35_6.1.7600.17082_none_da0e1e6285cbc429.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_13056d4d07c02645069df9a5cd974706_31bf3856ad364e35_6.1.7601.17911_none_0494f6a7c56a28cb.manifest
File versionNot Applicable
File size1,038
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_17555772af5ff8c3cc0d12877fb7e98e_31bf3856ad364e35_6.1.7600.17082_none_affc30ea171acacd.manifest
File versionNot Applicable
File size1,038
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_6188e57f871b8ae6c7d7c59d07545d71_31bf3856ad364e35_6.1.7600.17082_none_e11bca5779a94b50.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_880a75d81d09f183629a2b1dd7f3e391_31bf3856ad364e35_6.1.7600.21283_none_7e180fb1e7a55371.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_b47ea2f3b8b1a34ae94ad4fb73997bad_31bf3856ad364e35_6.1.7600.21283_none_42aadb18463b1406.manifest
File versionNot Applicable
File size1,038
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_b77e7f6753e48f32f1c503e27ecbf930_31bf3856ad364e35_6.1.7601.22067_none_c423a586b7192daa.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_c265dd5cc832f23b6523c1c9cc3e6d03_31bf3856ad364e35_6.1.7601.17911_none_6514a6616327cc85.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_c797d6ca346e6598e2448c923fcf42cf_31bf3856ad364e35_6.1.7601.22067_none_638c046adefa3365.manifest
File versionNot Applicable
File size1,038
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_dcbf5875d7cf3aae986e9c02dc054c2e_31bf3856ad364e35_6.1.7601.17911_none_5339cd9fe73fe171.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_f56d96692e372dfb13ffceaaf36ab435_31bf3856ad364e35_6.1.7601.22067_none_60d938f2ceafb20d.manifest
File versionNot Applicable
File size698
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.17082_none_14e54e09b43aa68e.manifest
File versionNot Applicable
File size42,090
Date (UTC)21-Jul-2012
Time (UTC)18:26
PlatformNot Applicable
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.21283_none_156fed04cd575cd6.manifest
File versionNot Applicable
File size42,090
Date (UTC)21-Jul-2012
Time (UTC)18:29
PlatformNot Applicable
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.17911_none_171685e3b128fc98.manifest
File versionNot Applicable
File size42,090
Date (UTC)20-Jul-2012
Time (UTC)19:53
PlatformNot Applicable
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.22067_none_176feb0aca69f63c.manifest
File versionNot Applicable
File size42,090
Date (UTC)20-Jul-2012
Time (UTC)19:52
PlatformNot Applicable
File nameUpdate-bf.mum
File versionNot Applicable
File size3,981
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size4,059
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.17082_none_1f39f85be89b6889.manifest
File versionNot Applicable
File size4,178
Date (UTC)21-Jul-2012
Time (UTC)17:27
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.21283_none_1fc4975701b81ed1.manifest
File versionNot Applicable
File size4,178
Date (UTC)21-Jul-2012
Time (UTC)17:25
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.17911_none_216b3035e589be93.manifest
File versionNot Applicable
File size4,178
Date (UTC)20-Jul-2012
Time (UTC)18:42
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.22067_none_21c4955cfecab837.manifest
File versionNot Applicable
File size4,178
Date (UTC)20-Jul-2012
Time (UTC)18:51
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_4dd91449f863fd25bf970614b6a106b3_31bf3856ad364e35_6.1.7600.21283_none_fd1e8b0813c6bce6.manifest
File versionNot Applicable
File size1,036
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameIa64_c938718bea9b35f2a0ab6ab7eae9a1e1_31bf3856ad364e35_6.1.7601.17911_none_3442a0373d8ae677.manifest
File versionNot Applicable
File size1,036
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameIa64_d227e36d5d191b044fbc83bfb02a032d_31bf3856ad364e35_6.1.7601.22067_none_3d0099c972f7df78.manifest
File versionNot Applicable
File size1,036
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameIa64_f2c4e580a8101df8017aa12528cfc5b2_31bf3856ad364e35_6.1.7600.17082_none_d28523d8181191d2.manifest
File versionNot Applicable
File size1,036
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.17082_none_b8c8567bfbdb3e54.manifest
File versionNot Applicable
File size42,088
Date (UTC)21-Jul-2012
Time (UTC)18:24
PlatformNot Applicable
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.21283_none_b952f57714f7f49c.manifest
File versionNot Applicable
File size42,088
Date (UTC)21-Jul-2012
Time (UTC)18:32
PlatformNot Applicable
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.17911_none_baf98e55f8c9945e.manifest
File versionNot Applicable
File size42,088
Date (UTC)20-Jul-2012
Time (UTC)19:39
PlatformNot Applicable
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.22067_none_bb52f37d120a8e02.manifest
File versionNot Applicable
File size42,088
Date (UTC)20-Jul-2012
Time (UTC)19:39
PlatformNot Applicable
File nameUpdate-bf.mum
File versionNot Applicable
File size1,909
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size1,947
Date (UTC)17-Sep-2012
Time (UTC)09:16
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.17082_none_1f39f85be89b6889.manifest
File versionNot Applicable
File size4,178
Date (UTC)21-Jul-2012
Time (UTC)17:27
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7600.21283_none_1fc4975701b81ed1.manifest
File versionNot Applicable
File size4,178
Date (UTC)21-Jul-2012
Time (UTC)17:25
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.17911_none_216b3035e589be93.manifest
File versionNot Applicable
File size4,178
Date (UTC)20-Jul-2012
Time (UTC)18:42
PlatformNot Applicable
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.1.7601.22067_none_21c4955cfecab837.manifest
File versionNot Applicable
File size4,178
Date (UTC)20-Jul-2012
Time (UTC)18:51
PlatformNot Applicable

Properties

Article ID: 2724781 - Last Review: October 10, 2012 - Revision: 3.0
Applies to
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • 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 kbexpertiseinter kbsurveynew KB2724781

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