Not sure if this is the right fix? We've added this issue to our memory dump diagnostic which can confirm.

Symptoms

On a computer that is running Windows 7 or Windows Server 2008 R2, the operating system may crash intermittently. Additionally, you receive a Stop error message that resembles the following:

Stop 0x0000007E (parameter1, parameter2, parameter3, parameter4)
SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

Notes

  • The parameters in this Stop error message vary, depending on the configuration of the computer.

  • Not all "0x0000007E" Stop error messages are caused by this issue.

  • This issue usually occurs on a file server, and does not occur when Server Message Block (SMB) Version 2 is disabled.

Cause

This issue occurs because of a race condition that is triggered when a NULL lease handle is accessed after the lease spinlock is released.

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=supportNote 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 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 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:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • 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 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

File name

File version

File size

Date

Time

Platform

Srv2.sys

6.1.7600.20996

311,808

25-Jun-2011

03:29

x86

Srv2.sys

6.1.7601.21757

311,808

25-Jun-2011

04:19

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Srv2.sys

6.1.7600.20996

399,872

25-Jun-2011

03:44

x64

Srv2.sys

6.1.7601.21757

409,088

25-Jun-2011

03:22

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Srv2.sys

6.1.7600.20996

792,064

25-Jun-2011

02:55

IA-64

Srv2.sys

6.1.7601.21757

792,064

25-Jun-2011

02:51

IA-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

File name

Update.mum

File version

Not applicable

File size

2,342

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

X86_294443657370dba025e06dd3b3107c18_31bf3856ad364e35_6.1.7600.20996_none_a17a4b5d8ff2486a.manifest

File version

Not applicable

File size

700

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

X86_e0b74f25a1d68b0d7785b746f138121a_31bf3856ad364e35_6.1.7601.21757_none_42dff753b11b7a7c.manifest

File version

Not applicable

File size

700

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.20996_none_da42c63970f4100c.manifest

File version

Not applicable

File size

2,655

Date (UTC)

25-Jun-2011

Time (UTC)

06:14

Platform

Not applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21757_none_dc5563396df9258b.manifest

File version

Not applicable

File size

2,655

Date (UTC)

25-Jun-2011

Time (UTC)

07:38

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_705b7d9fb829dc86e62a804fa4669d12_31bf3856ad364e35_6.1.7600.20996_none_0290e9ac2428470e.manifest

File version

Not applicable

File size

704

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

Amd64_f31699b276f3b50740b7a70f8cb73679_31bf3856ad364e35_6.1.7601.21757_none_4c863e5ac5c02ef2.manifest

File version

Not applicable

File size

704

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.20996_none_366161bd29518142.manifest

File version

Not applicable

File size

2,657

Date (UTC)

25-Jun-2011

Time (UTC)

07:05

Platform

Not applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21757_none_3873febd265696c1.manifest

File version

Not applicable

File size

2,657

Date (UTC)

25-Jun-2011

Time (UTC)

08:08

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,780

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_01801e97e79f6a38a756fcc384b1193d_31bf3856ad364e35_6.1.7600.20996_none_7c52da6c9ca8096b.manifest

File version

Not applicable

File size

702

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

Ia64_81989cd136f8b80181aa3807f1f3274c_31bf3856ad364e35_6.1.7601.21757_none_d624d511c4c14b84.manifest

File version

Not applicable

File size

702

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.20996_none_da446a2f70f21908.manifest

File version

Not applicable

File size

2,656

Date (UTC)

25-Jun-2011

Time (UTC)

06:58

Platform

Not applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21757_none_dc57072f6df72e87.manifest

File version

Not applicable

File size

2,656

Date (UTC)

25-Jun-2011

Time (UTC)

08:16

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,168

Date (UTC)

25-Jun-2011

Time (UTC)

10:00

Platform

Not applicable

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