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Symptoms

Consider the following scenario:

  • You install the Windows Server AppFabric feature on an Internet Information Services (IIS) server that is running Windows 8.1, Windows Server 2012 R2, Windows 7 service Pack 1 (SP1), or Windows Server 2008 R2 SP1.

  • You create a website, and then you add multiple applications to the website.

  • These applications are running under different application pools.

  • You enable the auto-start feature for different services in these applications.

  • You deploy a new service to run under the same website. Or, you restart an existing service.

In this scenario, all the services in these applications are preloaded in all the application pools. The expected behavior is that the services are isolated to their specific application pools.

For example, you create a website that is named MySite on an IIS server. MySite includes two applications, which are named App1 and App2. MySite and App1 run in an application pool that is named AppPool1. App2 runs in an application pool that is named AppPool2. In App1, you enable the auto-start feature for a service that is named service_App1. In App2, you enable the auto-start feature for a service that is named service_App2. When you deploy a new service_App3 in application App3, and then run the service in application pool AppPool3, service_App1 and service_App2 are also loaded in the application pool AppPool3. However, only service_App3 should be loaded.

Cause

This issue occurs because of an error in the W3wphost.dll file. This error causes services to be preloaded in multiple application pools after a configuration change.

Resolution

Hotfix information

Important Do not install a language pack after you install this hotfix. If you do, the language-specific changes in the hotfix will not be applied, and you will have to reinstall the hotfix. For more information, see Add language packs to Windows.

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 have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 R2.

Registry information

To apply 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 the hotfix if IIS is running when you apply the 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 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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

    6.3.960 0.17xxx

    Windows 8.1 and Windows Server 2012 R2

    RTM

    GDR

  • 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 8.1 and for Windows Server 2012 R2" 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.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Iisw3adm.dll

8.5.9600.17783

501,248

26-Mar-2015

02:44

x86

W3tp.dll

8.5.9600.17783

22,016

26-Mar-2015

02:06

x86

W3wphost.dll

8.5.9600.17783

66,048

26-Mar-2015

02:01

x86

Wbhstipm.dll

8.5.9600.17783

25,600

26-Mar-2015

02:56

x86

Wbhst_pm.dll

8.5.9600.17783

25,088

26-Mar-2015

02:53

x86

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Iisw3adm.dll

8.5.9600.17783

570,880

26-Mar-2015

04:04

x64

W3tp.dll

8.5.9600.17783

28,160

26-Mar-2015

03:09

x64

W3wphost.dll

8.5.9600.17783

75,264

26-Mar-2015

03:02

x64

Wbhstipm.dll

8.5.9600.17783

30,208

26-Mar-2015

04:19

x64

Wbhst_pm.dll

8.5.9600.17783

28,160

26-Mar-2015

04:16

x64

Iisw3adm.dll

8.5.9600.17783

501,248

26-Mar-2015

02:44

x86

W3tp.dll

8.5.9600.17783

22,016

26-Mar-2015

02:06

x86

W3wphost.dll

8.5.9600.17783

66,048

26-Mar-2015

02:01

x86

Wbhstipm.dll

8.5.9600.17783

25,600

26-Mar-2015

02:56

x86

Wbhst_pm.dll

8.5.9600.17783

25,088

26-Mar-2015

02:53

x86

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

    SR_Level

    Service branch

    6.1.760 1. 21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    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 7 and for Windows Server 2008 R2" 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.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

W3wphost.dll

7.5.7600.21141

55,296

01-Feb-2012

05:36

x86

W3wphost.dll

7.5.7601.21912

55,296

01-Feb-2012

06:52

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

W3wphost.dll

7.5.7600.21141

60,928

01-Feb-2012

06:29

x64

W3wphost.dll

7.5.7601.21912

60,928

01-Feb-2012

06:36

x64

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

File name

File version

File size

Date

Time

Platform

W3wphost.dll

7.5.7600.21141

144,384

01-Feb-2012

05:15

IA-64

W3wphost.dll

7.5.7601.21912

144,384

01-Feb-2012

05:25

IA-64

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_f1c682ac1cedf13fa518a1c976ca9fab_31bf3856ad364e35_6.3.9600.17783_none_8064f587a18d781e.manifest

File version

Not applicable

File size

717

Date (UTC)

26-Mar-2015

Time (UTC)

12:05

Platform

Not applicable

File name

X86_microsoft-windows-p..ellibrariesbinaries_31bf3856ad364e35_6.3.9600.17783_none_0f5ab6658a55a466.manifest

File version

Not applicable

File size

11,784

Date (UTC)

26-Mar-2015

Time (UTC)

05:32

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_1e3897e9a5d6da3819f46315cfb76c22_31bf3856ad364e35_6.3.9600.17783_none_71c98fb5f6ebe592.manifest

File version

Not applicable

File size

721

Date (UTC)

26-Mar-2015

Time (UTC)

12:05

Platform

Not applicable

File name

Amd64_5018c3660734c2c503d2df8dd2afb2bc_31bf3856ad364e35_6.3.9600.17783_none_02b7be38b77c038f.manifest

File version

Not applicable

File size

721

Date (UTC)

26-Mar-2015

Time (UTC)

12:05

Platform

Not applicable

File name

Amd64_microsoft-windows-p..ellibrariesbinaries_31bf3856ad364e35_6.3.9600.17783_none_6b7951e942b3159c.manifest

File version

Not applicable

File size

11,790

Date (UTC)

26-Mar-2015

Time (UTC)

05:37

Platform

Not applicable

File name

Wow64_microsoft-windows-p..ellibrariesbinaries_31bf3856ad364e35_6.3.9600.17783_none_75cdfc3b7713d797.manifest

File version

Not applicable

File size

10,115

Date (UTC)

26-Mar-2015

Time (UTC)

05:32

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

3,295

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

X86_84728235a201c41a012da7869236ae15_31bf3856ad364e35_6.1.7600.21141_none_c679fc69265ca403.manifest

File version

Not Applicable

File size

709

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

X86_c6f75a2026e1e77fe40eee8a968a58a9_31bf3856ad364e35_6.1.7601.21912_none_81b700deb0d27f68.manifest

File version

Not Applicable

File size

709

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

X86_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7600.21141_none_db2371ce2536dd54.manifest

File version

Not Applicable

File size

12,568

Date (UTC)

01-Feb-2012

Time (UTC)

06:04

File name

X86_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7601.21912_none_dd2b68a62243d8a9.manifest

File version

Not Applicable

File size

12,568

Date (UTC)

01-Feb-2012

Time (UTC)

07:19

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

File name

Amd64_605f2910fb3671de81638af6b238c1ff_31bf3856ad364e35_6.1.7601.21912_none_b3e3997337e4b4e0.manifest

File version

Not Applicable

File size

1,068

Date (UTC)

01-Feb-2012

Time (UTC)

09:26

File name

Amd64_64cb8c2bfcd6b3f3de844585a24df84c_31bf3856ad364e35_6.1.7600.21141_none_391da4727eab82a6.manifest

File version

Not Applicable

File size

1,068

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

Amd64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7600.21141_none_37420d51dd944e8a.manifest

File version

Not Applicable

File size

12,574

Date (UTC)

01-Feb-2012

Time (UTC)

06:57

File name

Amd64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7601.21912_none_394a0429daa149df.manifest

File version

Not Applicable

File size

12,574

Date (UTC)

01-Feb-2012

Time (UTC)

07:58

File name

Update.mum

File version

Not Applicable

File size

3,737

Date (UTC)

01-Feb-2012

Time (UTC)

09:26

File name

Wow64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7600.21141_none_4196b7a411f51085.manifest

File version

Not Applicable

File size

12,249

Date (UTC)

01-Feb-2012

Time (UTC)

05:54

File name

Wow64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7601.21912_none_439eae7c0f020bda.manifest

File version

Not Applicable

File size

12,249

Date (UTC)

01-Feb-2012

Time (UTC)

07:10

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

File name

Ia64_d773d20ff46a7701701faa1622957e22_31bf3856ad364e35_6.1.7601.21912_none_f63492bc43093399.manifest

File version

Not Applicable

File size

1,066

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

Ia64_ef4c205d40865aee2a1f212fb99fe379_31bf3856ad364e35_6.1.7600.21141_none_6b26810813307ad8.manifest

File version

Not Applicable

File size

1,066

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

Ia64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7600.21141_none_db2515c42534e650.manifest

File version

Not Applicable

File size

12,571

Date (UTC)

01-Feb-2012

Time (UTC)

06:52

File name

Ia64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7601.21912_none_dd2d0c9c2241e1a5.manifest

File version

Not Applicable

File size

12,571

Date (UTC)

01-Feb-2012

Time (UTC)

08:03

File name

Update.mum

File version

Not Applicable

File size

2,767

Date (UTC)

01-Feb-2012

Time (UTC)

09:25

File name

Wow64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7600.21141_none_4196b7a411f51085.manifest

File version

Not Applicable

File size

12,249

Date (UTC)

01-Feb-2012

Time (UTC)

05:54

File name

Wow64_microsoft-windows-processmodellibraries_31bf3856ad364e35_6.1.7601.21912_none_439eae7c0f020bda.manifest

File version

Not Applicable

File size

12,249

Date (UTC)

01-Feb-2012

Time (UTC)

07:10

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

For more information about Windows Server AppFabric, visit the following Microsoft website:

General information about Windows Server AppFabricFor more information about the auto-start feature, visit the following Microsoft website:

General information about the auto-start featureFor more information about how to configure auto-start, visit the following Microsoft website:

General information about how to configure auto-start

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