Introduction

This update lets Internet Information Services (IIS) on Windows 7-based and Windows Server 2008 R2-based web servers use the Application Initialization feature. This feature decreases the page load time of the initial requests to an application on the web server.

More Information

When an application is not initialized, the page load times are very long for the initial requests. Web applications are recycled periodically, especially on high-traffic sites. Therefore, when a user requests the application during a slow-response time, the page load time can be up to 30 seconds, or possibly longer.

The Application Initialization feature of IIS is used to resolve this issue. However, the feature does not work correctly on Windows 7 and Windows Server 2008 R2 because the pipeline API does not pass the necessary data. This feature can fix most performance issues of the web sites that are hosted on a Windows-based web server.

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 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 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
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 MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separatelyin 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

Hwebcore.dll

7.5.7600.21169

12,800

14-Mar-2012

05:04

x86

Iiscore.dll

7.5.7600.21169

200,192

14-Mar-2012

05:04

x86

Iisstart.htm

Not applicable

689

10-Jun-2009

21:21

Not applicable

W3dt.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Welcome.png

Not applicable

184,946

10-Jun-2009

21:21

Not applicable

Hwebcore.dll

7.5.7601.21943

12,800

14-Mar-2012

04:27

x86

Iiscore.dll

7.5.7601.21943

200,192

14-Mar-2012

04:27

x86

Iisstart.htm

Not applicable

689

10-Jun-2009

21:21

Not applicable

W3dt.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Welcome.png

Not applicable

184,946

10-Jun-2009

21:21

Not applicable

Iisw3adm.dll

7.5.7600.21169

397,312

14-Mar-2012

05:04

x86

W3tp.dll

7.5.7600.21169

15,872

14-Mar-2012

05:06

x86

W3wphost.dll

7.5.7600.21169

55,296

14-Mar-2012

05:06

x86

Wbhstipm.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Wbhst_pm.dll

7.5.7600.21169

23,552

14-Mar-2012

05:06

x86

Iisw3adm.dll

7.5.7601.21943

398,336

14-Mar-2012

04:27

x86

W3tp.dll

7.5.7601.21943

15,872

14-Mar-2012

04:30

x86

W3wphost.dll

7.5.7601.21943

55,296

14-Mar-2012

04:30

x86

Wbhstipm.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Wbhst_pm.dll

7.5.7601.21943

23,552

14-Mar-2012

04:30

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

Hwebcore.dll

7.5.7600.21169

15,360

14-Mar-2012

05:35

x64

Iiscore.dll

7.5.7600.21169

315,392

14-Mar-2012

05:36

x64

Iisstart.htm

Not applicable

689

10-Jun-2009

20:38

Not applicable

W3dt.dll

7.5.7600.21169

31,744

14-Mar-2012

05:41

x64

Welcome.png

Not applicable

184,946

10-Jun-2009

20:38

Not applicable

Hwebcore.dll

7.5.7601.21943

15,360

14-Mar-2012

05:30

x64

Iiscore.dll

7.5.7601.21943

315,904

14-Mar-2012

05:30

x64

Iisstart.htm

Not applicable

689

10-Jun-2009

20:38

Not applicable

W3dt.dll

7.5.7601.21943

32,256

14-Mar-2012

05:35

x64

Welcome.png

Not applicable

184,946

10-Jun-2009

20:38

Not applicable

Iisw3adm.dll

7.5.7600.21169

452,608

14-Mar-2012

05:36

x64

W3tp.dll

7.5.7600.21169

19,968

14-Mar-2012

05:41

x64

W3wphost.dll

7.5.7600.21169

60,928

14-Mar-2012

05:41

x64

Wbhstipm.dll

7.5.7600.21169

28,672

14-Mar-2012

05:41

x64

Wbhst_pm.dll

7.5.7600.21169

25,600

14-Mar-2012

05:41

x64

Iisw3adm.dll

7.5.7601.21943

453,632

14-Mar-2012

05:30

x64

W3tp.dll

7.5.7601.21943

19,968

14-Mar-2012

05:35

x64

W3wphost.dll

7.5.7601.21943

60,928

14-Mar-2012

05:35

x64

Wbhstipm.dll

7.5.7601.21943

28,672

14-Mar-2012

05:35

x64

Wbhst_pm.dll

7.5.7601.21943

25,600

14-Mar-2012

05:35

x64

Hwebcore.dll

7.5.7600.21169

12,800

14-Mar-2012

05:04

x86

Iiscore.dll

7.5.7600.21169

200,192

14-Mar-2012

05:04

x86

W3dt.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Hwebcore.dll

7.5.7601.21943

12,800

14-Mar-2012

04:27

x86

Iiscore.dll

7.5.7601.21943

200,192

14-Mar-2012

04:27

x86

W3dt.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Iisw3adm.dll

7.5.7600.21169

397,312

14-Mar-2012

05:04

x86

W3tp.dll

7.5.7600.21169

15,872

14-Mar-2012

05:06

x86

W3wphost.dll

7.5.7600.21169

55,296

14-Mar-2012

05:06

x86

Wbhstipm.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Wbhst_pm.dll

7.5.7600.21169

23,552

14-Mar-2012

05:06

x86

Iisw3adm.dll

7.5.7601.21943

398,336

14-Mar-2012

04:27

x86

W3tp.dll

7.5.7601.21943

15,872

14-Mar-2012

04:30

x86

W3wphost.dll

7.5.7601.21943

55,296

14-Mar-2012

04:30

x86

Wbhstipm.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Wbhst_pm.dll

7.5.7601.21943

23,552

14-Mar-2012

04:30

x86

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

File name

File version

File size

Date

Time

Platform

Hwebcore.dll

7.5.7600.21169

37,376

14-Mar-2012

04:21

IA-64

Iiscore.dll

7.5.7600.21169

582,144

14-Mar-2012

04:22

IA-64

Iisstart.htm

Not applicable

689

10-Jun-2009

20:42

Not applicable

W3dt.dll

7.5.7600.21169

52,224

14-Mar-2012

04:26

IA-64

Welcome.png

Not applicable

184,946

10-Jun-2009

20:42

Not applicable

Hwebcore.dll

7.5.7601.21943

37,376

14-Mar-2012

04:10

IA-64

Iiscore.dll

7.5.7601.21943

582,144

14-Mar-2012

04:10

IA-64

Iisstart.htm

Not applicable

689

10-Jun-2009

20:42

Not applicable

W3dt.dll

7.5.7601.21943

52,224

14-Mar-2012

04:12

IA-64

Welcome.png

Not applicable

184,946

10-Jun-2009

20:42

Not applicable

Iisw3adm.dll

7.5.7600.21169

943,616

14-Mar-2012

04:22

IA-64

W3tp.dll

7.5.7600.21169

40,960

14-Mar-2012

04:26

IA-64

W3wphost.dll

7.5.7600.21169

144,384

14-Mar-2012

04:26

IA-64

Wbhstipm.dll

7.5.7600.21169

65,536

14-Mar-2012

04:26

IA-64

Wbhst_pm.dll

7.5.7600.21169

67,072

14-Mar-2012

04:26

IA-64

Iisw3adm.dll

7.5.7601.21943

945,152

14-Mar-2012

04:10

IA-64

W3tp.dll

7.5.7601.21943

40,960

14-Mar-2012

04:12

IA-64

W3wphost.dll

7.5.7601.21943

144,384

14-Mar-2012

04:12

IA-64

Wbhstipm.dll

7.5.7601.21943

65,536

14-Mar-2012

04:12

IA-64

Wbhst_pm.dll

7.5.7601.21943

67,072

14-Mar-2012

04:12

IA-64

Hwebcore.dll

7.5.7600.21169

12,800

14-Mar-2012

05:04

x86

Iiscore.dll

7.5.7600.21169

200,192

14-Mar-2012

05:04

x86

W3dt.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Hwebcore.dll

7.5.7601.21943

12,800

14-Mar-2012

04:27

x86

Iiscore.dll

7.5.7601.21943

200,192

14-Mar-2012

04:27

x86

W3dt.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Iisw3adm.dll

7.5.7600.21169

397,312

14-Mar-2012

05:04

x86

W3tp.dll

7.5.7600.21169

15,872

14-Mar-2012

05:06

x86

W3wphost.dll

7.5.7600.21169

55,296

14-Mar-2012

05:06

x86

Wbhstipm.dll

7.5.7600.21169

24,064

14-Mar-2012

05:06

x86

Wbhst_pm.dll

7.5.7600.21169

23,552

14-Mar-2012

05:06

x86

Iisw3adm.dll

7.5.7601.21943

398,336

14-Mar-2012

04:27

x86

W3tp.dll

7.5.7601.21943

15,872

14-Mar-2012

04:30

x86

W3wphost.dll

7.5.7601.21943

55,296

14-Mar-2012

04:30

x86

Wbhstipm.dll

7.5.7601.21943

24,064

14-Mar-2012

04:30

x86

Wbhst_pm.dll

7.5.7601.21943

23,552

14-Mar-2012

04:30

x86


Additional file information

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!

×