Update is available that improves the network performance of Internet Explorer 11 in Windows

Note: The Internet Explorer 11 desktop application will be retired and go out of support on June 15, 2022 (for a list of what's in scope, see the FAQ). The same IE11 apps and sites you use today can open in Microsoft Edge with Internet Explorer mode. Learn more here.

Introduction

This article describes an update that improves the network performance of Windows Internet Explorer 11 in Windows RT 8.1, Windows 8.1, Windows Server 2012 R2, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1. 

Resolution

To resolve this issue, install update 2919355 in Windows 8.1 and Windows Server 2012 R2, or install update 2888049 in Windows 7 SP1 and Windows Server 2008 R2 SP1.

More Information

After you install this update, Windows sends ACK messages without a delay when it uses Transmission Control Protocol (TCP) protocol connections.

Note The TCP protocol is a common protocol that a computer uses in network connections.

Update information for Windows 8.1 and Windows Server 2012 R2

For more information about how to obtain update 2919355, click the following article number to view the article in the Microsoft Knowledge Base:

2919355 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 Update April, 2014

Update information for Windows 7 SP1 and Windows Server 2008 R2 SP1

How to obtain this update

Windows Update

This update is available from Windows Update.

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 7

Download Download the package now.

All supported x64-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows Server 2008 R2

Download Download the package now.

All supported IA-64-based versions of Windows Server 2008 R2

Download Download the package now.

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.

Prerequisites

To apply this hotfix, you must be running Windows 7 SP1 or Windows Server 2008 R2 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 apply this hotfix, 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.

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
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.22xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    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 separately in the "Additional file information " 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

Netio.sys

6.1.7601.17939

240,496

22-Aug-12

17:16

x86

Netio.sys

6.1.7601.22457

240,576

14-Sep-13

1:51

x86

Fwpkclnt.sys

6.1.7601.18042

187,752

3-Jan-13

5:04

x86

Tcpip.sys

6.1.7601.18254

1,294,272

8-Sep-13

2:07

x86

Fwpkclnt.sys

6.1.7601.22444

187,840

7-Sep-13

2:06

x86

Tcpip.sys

6.1.7601.22444

1,309,120

7-Sep-13

2:06

x86

Mswsock.dll

6.1.7601.18254

231,424

8-Sep-13

2:03

x86

Mswsock.dll

6.1.7601.22444

231,424

7-Sep-13

2:04

x86

Afd.sys

6.1.7601.18264

338,944

14-Sep-13

0:48

x86

Afd.sys

6.1.7601.22457

338,944

14-Sep-13

0:57

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

Netio.sys

6.1.7601.17939

376,688

22-Aug-12

18:12

x64

Netio.sys

6.1.7601.22457

376,768

14-Sep-13

2:20

x64

Fwpkclnt.sys

6.1.7601.18042

288,088

3-Jan-13

6:00

x64

Tcpip.sys

6.1.7601.18254

1,903,552

8-Sep-13

2:30

x64

Fwpkclnt.sys

6.1.7601.22444

288,192

7-Sep-13

2:27

x64

Tcpip.sys

6.1.7601.22444

1,896,896

7-Sep-13

2:27

x64

Mswsock.dll

6.1.7601.18254

327,168

8-Sep-13

2:27

x64

Mswsock.dll

6.1.7601.22444

327,168

7-Sep-13

2:24

x64

Afd.sys

6.1.7601.18264

497,152

14-Sep-13

1:10

x64

Afd.sys

6.1.7601.22457

496,128

14-Sep-13

1:11

x64

Mswsock.dll

6.1.7601.18254

231,424

8-Sep-13

2:03

x86

Mswsock.dll

6.1.7601.22444

231,424

7-Sep-13

2:04

x86

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

File name

File version

File size

Date

Time

Platform

Netio.sys

6.1.7601.17939

711,024

22-Aug-12

16:51

IA-64

Netio.sys

6.1.7601.22457

711,104

14-Sep-13

1:34

IA-64

Fwpkclnt.sys

6.1.7601.18042

482,152

3-Jan-13

4:45

IA-64

Tcpip.sys

6.1.7601.18254

3,790,272

8-Sep-13

1:35

IA-64

Fwpkclnt.sys

6.1.7601.22444

482,240

7-Sep-13

1:36

IA-64

Tcpip.sys

6.1.7601.22444

3,805,120

7-Sep-13

1:36

IA-64

Mswsock.dll

6.1.7601.18254

750,592

8-Sep-13

1:32

IA-64

Mswsock.dll

6.1.7601.22444

750,592

7-Sep-13

1:34

IA-64

Afd.sys

6.1.7601.18264

1,114,624

14-Sep-13

0:38

IA-64

Afd.sys

6.1.7601.22457

1,115,136

14-Sep-13

0:42

IA-64

Mswsock.dll

6.1.7601.18254

231,424

8-Sep-13

2:03

x86

Mswsock.dll

6.1.7601.22444

231,424

7-Sep-13

2:04

x86


Additional file information

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