An application may stop responding when the application closes a socket connection or shuts down

Symptoms

Consider the following scenario:

  • You have a computer that is running Windows 7,  Windows Server 2008 R2, Windows Server 2008, or Windows Vista.

  • You have an application that calls the WSASocket function to create sockets and that calls the SetHandleInformation function to set the socket attribute on the computer.

  • The application also creates child processes.

  • The application closes a socket connection or shuts down.

In this scenario, the application may stop responding.

Cause

This issue occurs because the child process does not release the handle for a long time.

By default, socket handles are inheritable. When a child process is created, the child process inherits the socket handle from the parent process. When the parent process tries to close the socket, it waits until the child process releases the handle. However, the child process does not release the handle for a long time. Therefore, the application stops responding. 

Resolution

Windows 7 and Windows Server 2007 R2: The fix for this issue was first included in Service Pack 1 for Windows Server 2008 R2. You can download this service pack from the following Microsoft website:

http://www.microsoft.com/download/en/details.aspx?FamilyID=C3202CE6-4056-4059-8A1B-3A9B77CDFDDA
The following hotfix introduces a new WSA_FLAG_NO_HANDLE_INHERIT flag for the WSASocket function to specify whether to inherit the socket handle.

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=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 Vista Service Pack 1 (SP1)

  • Windows Vista Service Pack 2 (SP2)

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2 (SP2)

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

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.

    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.xxxxxx 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 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 Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Service branch

Mswsock.dll

6.0.6001.22755

223,232

01-Sep-2010

19:24

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6001.22755_NONE_B8ABF10B468D57AA

Mswsock.dll

6.0.6002.22479

223,232

01-Sep-2010

21:06

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6002.22479_NONE_BA80C44343C04A0C

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

File name

File version

File size

Date

Time

Platform

Service branch

Mswsock.dll

6.0.6001.22755

304,128

01-Sep-2010

19:50

x64

AMD64_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6001.22755_NONE_14CA8C8EFEEAC8E0

Mswsock.dll

6.0.6002.22479

304,128

01-Sep-2010

20:26

x64

AMD64_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6002.22479_NONE_169F5FC6FC1DBB42

Mswsock.dll

6.0.6001.22755

223,232

01-Sep-2010

19:24

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6001.22755_NONE_B8ABF10B468D57AA

Mswsock.dll

6.0.6002.22479

223,232

01-Sep-2010

21:06

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6002.22479_NONE_BA80C44343C04A0C

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

File name

File version

File size

Date

Time

Platform

Service branch

Mswsock.dll

6.0.6001.22755

710,656

01-Sep-2010

19:26

IA-64

IA64_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6001.22755_NONE_B8AD9501468B60A6

Mswsock.dll

6.0.6002.22479

710,656

01-Sep-2010

20:37

IA-64

IA64_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6002.22479_NONE_BA82683943BE5308

Mswsock.dll

6.0.6001.22755

223,232

01-Sep-2010

19:24

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6001.22755_NONE_B8ABF10B468D57AA

Mswsock.dll

6.0.6002.22479

223,232

01-Sep-2010

21:06

x86

X86_MICROSOFT-WINDOWS-W..-INFRASTRUCTURE-BSP_31BF3856AD364E35_6.0.6002.22479_NONE_BA80C44343C04A0C

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 the WSASocket function, visit the following Microsoft website:

General information about the WSASocket functionFor more information about the SetHandleInformation function, visit the following Microsoft website:

General information about the SetHandleInformation functionFor more information about the CreateProcess function, visit the following Microsoft website:

General information about the CreateProcess functionFor more information about the closesocket function, visit the following Microsoft website:

General information about the closesocket functionFor 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

3,577

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

X86_c2380966ccbdcbf3264293a78b8f57a3_31bf3856ad364e35_6.0.6001.22755_none_2266dd51e7696d00.manifest

File version

Not applicable

File size

719

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

X86_fb6890ba4dc2b20e0eee942dbc1213b9_31bf3856ad364e35_6.0.6002.22479_none_d31eb0f3e5a25546.manifest

File version

Not applicable

File size

719

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6001.22755_none_b8abf10b468d57aa.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

19:41

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6002.22479_none_ba80c44343c04a0c.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

21:27

Platform

Not applicable

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

File name

Amd64_3a56df4bff5eefa45859cf0099cfc5ae_31bf3856ad364e35_6.0.6001.22755_none_8d29a8985cdbea11.manifest

File version

Not applicable

File size

723

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Amd64_bf8816280a301c699a8f8203c4190e17_31bf3856ad364e35_6.0.6001.22755_none_9fcb2725b847333c.manifest

File version

Not applicable

File size

1,086

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Amd64_c53f614436b68b52749ee20d20cb3435_31bf3856ad364e35_6.0.6002.22479_none_d4f2dca3963de973.manifest

File version

Not applicable

File size

1,086

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Amd64_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6001.22755_none_14ca8c8efeeac8e0.manifest

File version

Not applicable

File size

6,783

Date (UTC)

01-Sep-2010

Time (UTC)

20:10

Platform

Not applicable

File name

Amd64_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6002.22479_none_169f5fc6fc1dbb42.manifest

File version

Not applicable

File size

6,783

Date (UTC)

01-Sep-2010

Time (UTC)

20:46

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

3,605

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6001.22755_none_b8abf10b468d57aa.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

19:41

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6002.22479_none_ba80c44343c04a0c.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

21:27

Platform

Not applicable

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

File name

Ia64_19a703e0e85c6dc3d4f6817e1a36a3bd_31bf3856ad364e35_6.0.6002.22479_none_549e6a19dd10210a.manifest

File version

Not applicable

File size

1,084

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Ia64_53757a883c48ae1b549cbf717db16dcf_31bf3856ad364e35_6.0.6001.22755_none_e9c62c6836e81204.manifest

File version

Not applicable

File size

1,084

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Ia64_da9456f4135fedc07df726979373e0b5_31bf3856ad364e35_6.0.6001.22755_none_94f7bb42e01b6ed7.manifest

File version

Not applicable

File size

721

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

Ia64_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6001.22755_none_b8ad9501468b60a6.manifest

File version

Not applicable

File size

6,771

Date (UTC)

01-Sep-2010

Time (UTC)

19:42

Platform

Not applicable

File name

Ia64_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6002.22479_none_ba82683943be5308.manifest

File version

Not applicable

File size

6,771

Date (UTC)

01-Sep-2010

Time (UTC)

20:52

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,758

Date (UTC)

02-Sep-2010

Time (UTC)

06:56

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6001.22755_none_b8abf10b468d57aa.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

19:41

Platform

Not applicable

File name

X86_microsoft-windows-w..-infrastructure-bsp_31bf3856ad364e35_6.0.6002.22479_none_ba80c44343c04a0c.manifest

File version

Not applicable

File size

6,759

Date (UTC)

01-Sep-2010

Time (UTC)

21:27

Platform

Not applicable

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