This article describes an issue that occurs when a context is associated with a data flow in Windows Server 2012 R2, Windows 8.1, Windows RT 8.1, Windows Server 2012, or Windows Embedded 8. You can fix this issue by using the update in this article. Before you install this update, see the Prerequisites section.

Symptoms

For Windows Filtering Platform (WFP) callouts that process data at a filtering layer that supports data flows, the callout driver can associate a context with each data flow. WFP callouts that associate context with data flows may not be able to correctly inspect traffic because of a problem in how WFP handles the callout driver allocated context.

How to get this update

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

All supported x64-based versions of Windows Server 2012

Download Download the package now.

Note The update for Windows RT 8.1 can be downloaded only from Windows Update. For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

Prerequisites

To apply this update in Windows 8.1 or Windows Server 2012 R2, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

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

Update replacement information

This update doesn't replace a previously released update.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about the terminology that Microsoft uses to describe software updates.

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

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

    6.3.960 0.18 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • 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 in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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.

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Netio.sys

6.3.9600.18183

332,632

30-Dec-2015

20:54

x86

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Netio.sys

6.3.9600.18183

470,360

30-Dec-2015

20:49

x64

Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Netio.sys

6.3.9600.18183

301,920

30-Dec-2015

21:00

Not applicable

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

    6.2.920 0.17xxx

    Windows Embedded 8 or Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows Embedded 8 or Windows Server 2012

    RTM

    LDR

  • 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 in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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.

x86 Windows Embedded 8

File name

File version

File size

Date

Time

Platform

Netio.sys

6.2.9200.17626

342,360

13-Jan-2016

21:50

x86

Netio.sys

6.2.9200.21745

341,336

13-Jan-2016

22:06

x86

x64 Windows Embedded 8 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Netio.sys

6.2.9200.17626

447,832

14-Jan-2016

01:10

x64

Netio.sys

6.2.9200.21745

442,712

13-Jan-2016

21:59

x64

x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,600

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

X86_1c1a8a87509f62da063df035f4e8aa85_31bf3856ad364e35_6.3.9600.18185_none_af15f292f608323c.manifest

File version

Not applicable

File size

708

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

X86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.3.9600.18185_none_eb3c004ad0e66ee8.manifest

File version

Not applicable

File size

2,582

Date (UTC)

30-Dec-2015

Time (UTC)

21:06

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_4346ef77b839fcb61cc7baf5cb493685_31bf3856ad364e35_6.3.9600.18185_none_2b429a83ea63ccbb.manifest

File version

Not applicable

File size

712

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

Amd64_7dbeb107dd2c314c95a7d4d2b3c1bc66_31bf3856ad364e35_6.3.9600.18185_none_167fbb641b2647b2.manifest

File version

Not applicable

File size

712

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

Amd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.3.9600.18185_none_475a9bce8943e01e.manifest

File version

Not applicable

File size

2,584

Date (UTC)

30-Dec-2015

Time (UTC)

21:09

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,609

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

Wow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.3.9600.18185_none_51af4620bda4a219.manifest

File version

Not applicable

File size

1,183

Date (UTC)

30-Dec-2015

Time (UTC)

15:24

Platform

Not applicable

Windows RT 8.1

File property

Value

File name

Arm_0fe693a461853f9fe952130462d9f96e_31bf3856ad364e35_6.3.9600.18185_none_68cbdb2a3167f74e.manifest

File version

Not applicable

File size

708

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

Arm_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.3.9600.18185_none_eb3e72a2d0e38dae.manifest

File version

Not applicable

File size

2,582

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,600

Date (UTC)

30-Dec-2015

Time (UTC)

21:01

Platform

Not applicable

x86 Windows Embedded 8

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,601

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

X86_075cdadf9198803252750e6a659c4029_31bf3856ad364e35_6.2.9200.21745_none_c8eae3f5c101f8a0.manifest

File version

Not applicable

File size

708

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

X86_e28cd77ecc88fecd3f8cec12c44359ed_31bf3856ad364e35_6.2.9200.17626_none_2b9e4a6d4a9364b7.manifest

File version

Not applicable

File size

708

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

X86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.17626_none_538947bc8681e83e.manifest

File version

Not applicable

File size

2,579

Date (UTC)

13-Jan-2016

Time (UTC)

21:54

Platform

Not applicable

File name

X86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.21745_none_53fc44659fb0a693.manifest

File version

Not applicable

File size

2,579

Date (UTC)

13-Jan-2016

Time (UTC)

22:30

Platform

Not applicable

x64 Windows Embedded 8 and Windows Server 2012

File property

Value

File name

Amd64_16fb62285c66bc8832c81cc634c2b00e_31bf3856ad364e35_6.2.9200.17626_none_6b7e4ed073afe718.manifest

File version

Not applicable

File size

712

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

Amd64_56087151ad858afea0aec6e83febe776_31bf3856ad364e35_6.2.9200.21745_none_d4b409a77b2a943e.manifest

File version

Not applicable

File size

712

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

Amd64_c8fa660887824f3cdbd51966aed3ac60_31bf3856ad364e35_6.2.9200.21745_none_be958e4f22535280.manifest

File version

Not applicable

File size

712

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

Amd64_e80d861d5f390670d04e1c0d34a84ce8_31bf3856ad364e35_6.2.9200.17626_none_c002146042a2ca6d.manifest

File version

Not applicable

File size

712

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

Amd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.17626_none_afa7e3403edf5974.manifest

File version

Not applicable

File size

2,581

Date (UTC)

14-Jan-2016

Time (UTC)

01:26

Platform

Not applicable

File name

Amd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.21745_none_b01adfe9580e17c9.manifest

File version

Not applicable

File size

2,581

Date (UTC)

13-Jan-2016

Time (UTC)

23:27

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,483

Date (UTC)

15-Jan-2016

Time (UTC)

02:24

Platform

Not applicable

File name

Wow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.17626_none_b9fc8d9273401b6f.manifest

File version

Not applicable

File size

1,183

Date (UTC)

13-Jan-2016

Time (UTC)

21:53

Platform

Not applicable

File name

Wow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.2.9200.21745_none_ba6f8a3b8c6ed9c4.manifest

File version

Not applicable

File size

1,183

Date (UTC)

13-Jan-2016

Time (UTC)

22:29

Platform

Not applicable

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