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Symptoms

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

STOP: 0x00000044 (parameter1, parameter2, parameter3, parameter4)
MULTIPLE_IRP_COMPLETE_REQUESTS



Notes

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

  • Not all "0x00000044" Stop errors are caused by this issue.

Cause

This issue occurs because of a race condition that is caused by a reference counting on lease.

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 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:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    0.21xxx

    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 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

File name

File version

File size

Date

Time

Platform

Srv2.sys

6.1.7600.21054

311,808

15-Sep-2011

02:19

x86

Srv2.sys

6.1.7601.21819

312,320

15-Sep-2011

03:38

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

6.1.7600.21054

399,872

15-Sep-2011

02:43

x64

Srv2.sys

6.1.7601.21819

409,600

15-Sep-2011

03:24

x64

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

File name

File version

File size

Date

Time

Platform

Srv2.sys

6.1.7600.21054

792,064

15-Sep-2011

01:52

IA-64

Srv2.sys

6.1.7601.21819

792,576

15-Sep-2011

01:56

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

X86_1b753743b46eacc130a2c032fc8ab797_31bf3856ad364e35_6.1.7601.21819_none_7eba562d261f02bf.manifest

File version

Not applicable

File size

700

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

X86_62aca4f1d4d3adf2aa2c79827a2be611_31bf3856ad364e35_6.1.7600.21054_none_50bbcaea0e5a6053.manifest

File version

Not applicable

File size

700

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.21054_none_da6bdd7770d5a0dc.manifest

File version

Not applicable

File size

2,655

Date (UTC)

15-Sep-2011

Time (UTC)

05:04

Platform

Not applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21819_none_dc82a5636dd6e59c.manifest

File version

Not applicable

File size

2,655

Date (UTC)

15-Sep-2011

Time (UTC)

07:10

Platform

Not applicable

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

File name

Amd64_800a6068cbfe8d491442babfbe0fac9d_31bf3856ad364e35_6.1.7600.21054_none_f599c8a8802bccf3.manifest

File version

Not applicable

File size

704

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

Amd64_d930825c1d8287ba9e8c19a5e65a8575_31bf3856ad364e35_6.1.7601.21819_none_a0cb259219443b59.manifest

File version

Not applicable

File size

704

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.21054_none_368a78fb29331212.manifest

File version

Not applicable

File size

2,657

Date (UTC)

15-Sep-2011

Time (UTC)

05:55

Platform

Not applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21819_none_38a140e7263456d2.manifest

File version

Not applicable

File size

2,657

Date (UTC)

15-Sep-2011

Time (UTC)

07:37

Platform

Not applicable

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

File name

Ia64_69b49d318edb3ff5739284e8a11558fa_31bf3856ad364e35_6.1.7600.21054_none_f1a2bd416c6132b4.manifest

File version

Not applicable

File size

702

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

Ia64_c9ea01a3dda959a7d5b2a0d63714d11b_31bf3856ad364e35_6.1.7601.21819_none_e9f4c1c304dd4cd7.manifest

File version

Not applicable

File size

702

Date (UTC)

15-Sep-2011

Time (UTC)

10:28

Platform

Not applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7600.21054_none_da6d816d70d3a9d8.manifest

File version

Not applicable

File size

2,656

Date (UTC)

15-Sep-2011

Time (UTC)

05:42

Platform

Not applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.21819_none_dc8449596dd4ee98.manifest

File version

Not applicable

File size

2,656

Date (UTC)

15-Sep-2011

Time (UTC)

07:29

Platform

Not applicable

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