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 Server 2008, Windows Vista, Windows 7 or Windows Server 2008 R2, you may receive the following Stop error when the computer is under heavy load.

Stop 0x00000050 (parameter1, parameter2, parameter3, parameter4)

PAGE_FAULT_IN_NONPAGED_AREA

Note

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

  • Not all "0x00000050" Stop error messages are caused by this problem.

Note This Stop error occurs in the Srv.sys driver that is used by the Server service. This issue may occur when users access a shared resource on the computer remotely.

Cause

This issue occurs because of a race condition in Server service driver (Srv.sys). The race condition occurs when the Server service driver checks a structure and does not have the expected spin lock. This behavior causes an access violation exception in the Server service driver. Therefore, the operating system triggers the Stop error.

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, your computer must be running one of the following operating systems:

  • Windows Vista Service Pack 1 (SP1)

  • Windows Vista Service Pack 2 (SP2)

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows 7

  • Windows Server 2008 R2

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

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) 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.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    1.
    22xxx

    Windows Vista and Windows Server 2008

    SP1

    LDR

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • 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 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 Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Srvnet.sys

6.0.6001.22646

99,328

02-Mar-2010

14:04

x86

Srv.sys

6.0.6001.22646

302,080

02-Mar-2010

14:05

x86

Srv.sys

6.0.6002.22352

302,592

02-Mar-2010

13:55

x86

Srv2.sys

6.0.6001.22646

145,408

02-Mar-2010

14:04

x86

Srv2.sys

6.0.6002.22352

144,896

02-Mar-2010

13:55

x86

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

File name

File version

File size

Date

Time

Platform

Srvnet.sys

6.0.6001.22646

141,312

02-Mar-2010

16:09

x64

Srv.sys

6.0.6001.22646

452,096

02-Mar-2010

16:10

x64

Srv.sys

6.0.6002.22352

452,096

02-Mar-2010

14:00

x64

Srv2.sys

6.0.6001.22646

174,592

02-Mar-2010

16:09

x64

Srv2.sys

6.0.6002.22352

174,592

02-Mar-2010

14:00

x64

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

File name

File version

File size

Date

Time

Platform

Srvnet.sys

6.0.6001.22646

286,720

02-Mar-2010

15:51

IA-64

Srv.sys

6.0.6001.22646

964,608

02-Mar-2010

15:51

IA-64

Srv.sys

6.0.6002.22352

964,608

02-Mar-2010

13:49

IA-64

Srv2.sys

6.0.6001.22646

465,920

02-Mar-2010

15:51

IA-64

Srv2.sys

6.0.6002.22352

465,920

02-Mar-2010

13:48

IA-64

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
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    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

Srv.sys

6.1.7600.20880

311,296

14-Jan-2011

03:17

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

Srv.sys

6.1.7600.20880

462,336

14-Jan-2011

03:39

x64

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

File name

File version

File size

Date

Time

Platform

Srv.sys

6.1.7600.20880

1,026,560

14-Jan-2011

02:56

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 Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008

File name

Update.mum

File version

Not Applicable

File size

3,068

Date (UTC)

03-Mar-2010

Time (UTC)

03:25

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-common_31bf3856ad364e35_6.0.6001.22646_none_043a9689295fb012.manifest

File version

Not Applicable

File size

4,227

Date (UTC)

02-Mar-2010

Time (UTC)

18:18

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6001.22646_none_da5bd1b00fac3130.manifest

File version

Not Applicable

File size

4,627

Date (UTC)

02-Mar-2010

Time (UTC)

18:13

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6002.22352_none_dc3372840cde3ce9.manifest

File version

Not Applicable

File size

4,627

Date (UTC)

02-Mar-2010

Time (UTC)

18:07

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6001.22646_none_da5101c40fb44d21.manifest

File version

Not Applicable

File size

4,426

Date (UTC)

02-Mar-2010

Time (UTC)

18:12

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6002.22352_none_dc28a2980ce658da.manifest

File version

Not Applicable

File size

4,426

Date (UTC)

02-Mar-2010

Time (UTC)

18:07

Platform

Not Applicable

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

File name

Amd64_microsoft-windows-smbserver-common_31bf3856ad364e35_6.0.6001.22646_none_6059320ce1bd2148.manifest

File version

Not Applicable

File size

4,493

Date (UTC)

02-Mar-2010

Time (UTC)

20:33

Platform

Not Applicable

File name

Amd64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6001.22646_none_367a6d33c809a266.manifest

File version

Not Applicable

File size

4,891

Date (UTC)

02-Mar-2010

Time (UTC)

20:25

Platform

Not Applicable

File name

Amd64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6002.22352_none_38520e07c53bae1f.manifest

File version

Not Applicable

File size

4,891

Date (UTC)

02-Mar-2010

Time (UTC)

18:00

Platform

Not Applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6001.22646_none_366f9d47c811be57.manifest

File version

Not Applicable

File size

4,688

Date (UTC)

02-Mar-2010

Time (UTC)

20:23

Platform

Not Applicable

File name

Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6002.22352_none_38473e1bc543ca10.manifest

File version

Not Applicable

File size

4,688

Date (UTC)

02-Mar-2010

Time (UTC)

17:59

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

3,092

Date (UTC)

03-Mar-2010

Time (UTC)

03:25

Platform

Not Applicable

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

File name

Ia64_microsoft-windows-smbserver-common_31bf3856ad364e35_6.0.6001.22646_none_043c3a7f295db90e.manifest

File version

Not Applicable

File size

4,488

Date (UTC)

02-Mar-2010

Time (UTC)

20:15

Platform

Not Applicable

File name

Ia64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6001.22646_none_da5d75a60faa3a2c.manifest

File version

Not Applicable

File size

4,885

Date (UTC)

02-Mar-2010

Time (UTC)

20:11

Platform

Not Applicable

File name

Ia64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.0.6002.22352_none_dc35167a0cdc45e5.manifest

File version

Not Applicable

File size

4,885

Date (UTC)

02-Mar-2010

Time (UTC)

17:39

Platform

Not Applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6001.22646_none_da52a5ba0fb2561d.manifest

File version

Not Applicable

File size

4,683

Date (UTC)

02-Mar-2010

Time (UTC)

20:10

Platform

Not Applicable

File name

Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.0.6002.22352_none_dc2a468e0ce461d6.manifest

File version

Not Applicable

File size

4,683

Date (UTC)

02-Mar-2010

Time (UTC)

17:38

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,249

Date (UTC)

03-Mar-2010

Time (UTC)

03:25

Platform

Not Applicable

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

1,659

Date (UTC)

14-Jan-2011

Time (UTC)

08:45

Platform

Not Applicable

File name

X86_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.1.7600.20880_none_da52626f70e942f9.manifest

File version

Not Applicable

File size

3,022

Date (UTC)

14-Jan-2011

Time (UTC)

05:49

Platform

Not Applicable

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

File name

Amd64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.1.7600.20880_none_3670fdf32946b42f.manifest

File version

Not Applicable

File size

3,026

Date (UTC)

14-Jan-2011

Time (UTC)

06:55

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,891

Date (UTC)

14-Jan-2011

Time (UTC)

08:45

Platform

Not Applicable

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

File name

Ia64_microsoft-windows-smbserver-v1_31bf3856ad364e35_6.1.7600.20880_none_da54066570e74bf5.manifest

File version

Not Applicable

File size

3,024

Date (UTC)

14-Jan-2011

Time (UTC)

06:41

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,684

Date (UTC)

14-Jan-2011

Time (UTC)

08:45

Platform

Not Applicable

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