FIX: IIS 7.5 and IIS 8.0 do not notify modules that have registered for the RQ_SEND_RESPONSE event notification

Symptoms

Consider the following scenario:

  • You have a computer that is running Internet Information Services (IIS) 7.5 or IIS 8.0.

  • You create a custom request-level module that registers for the RQ_SEND_RESPONSE event notification. You register and enable this module in IIS.

    Note By doing this, IIS calls the OnSendResponse method of the module when it sends the response buffer.

  • A client request is sent to the computer, and the request is received by the ISAPI extension. Then, a response is returned.

In this scenario, IIS does not notify the modules that have registered for the RQ_SEND_RESPONSE event notification. Additionally, information about the event is not logged on the computer.

For example, RpcProxy.dll is an ISAPI extension that runs in IIS 7.5 or IIS 8.0 in a Microsoft Exchange environment that has Outlook Anywhere enabled. In this example, IIS 7.5 or IIS 8.0 does not log a "200" HTTP status code for successful client requests.

Cause

This issue occurs because IIS does not notify the module if IIS initiates a send request directly to the http.sys file together with the disconnect flag.

Resolution

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

You must have IIS 7.5 or IIS 8.0 installed to apply this hotfix. This hotfix can be installed on a computer that is running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 SP1

  • Windows 8

  • Windows Server 2012

Restart requirement

You must restart the computer if IIS is running when you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix uses a Microsoft Windows Installer package to install the hotfix. The dates and the times for these files are listed in Coordinated Universal Time (UTC) in the following table. When you view the file information, the date is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Iiscore.dll

7.5.7600.21229

200,192

8-Jun-12

5:51

x86

Iiscore.dll

7.5.7601.22013

200,192

7-Jun-12

4:33

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

Iiscore.dll

7.5.7600.21229

315,392

8-Jun-12

5:30

x64

Iiscore.dll

7.5.7601.22013

315,904

7-Jun-12

5:38

x64

Iiscore.dll

7.5.7600.21229

200,192

8-Jun-12

5:51

x86

Iiscore.dll

7.5.7601.22013

200,192

7-Jun-12

4:33

x86

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

File name

File version

File size

Date

Time

Platform

Iiscore.dll

7.5.7600.21229

582,144

8-Jun-12

4:10

IA-64

Iiscore.dll

7.5.7601.22013

582,656

7-Jun-12

4:18

IA-64

Iiscore.dll

7.5.7600.21229

200,192

8-Jun-12

5:51

x86

Iiscore.dll

7.5.7601.22013

200,192

7-Jun-12

4:33

x86

For all supported x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Iiscore.dll

8.0.9200.20579

206,848

08-Dec-2012

04:23

x86

For all supported x64-based versions of Windows 8 and of Windows Server 2012

File name

File version

File size

Date

Time

Platform

Iiscore.dll

8.0.9200.20579

319,488

08-Dec-2012

04:23

x64

Additional file information

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

3,287

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

X86_679a557043b1b6b67a36db1e25d316bf_31bf3856ad364e35_6.1.7600.21229_none_3dbf5dbfec28b62d.manifest

File version

Not Applicable

File size

705

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

X86_be850a6f3b4a193c819eaa0d7d876329_31bf3856ad364e35_6.1.7601.22013_none_ce784643299471a4.manifest

File version

Not Applicable

File size

705

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

X86_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.21229_none_d04ec131a381cf61.manifest

File version

Not Applicable

File size

10,228

Date (UTC)

8-Jun-12

Time (UTC)

6:23

Platform

Not Applicable

File name

X86_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7601.22013_none_d239ec67a0a58752.manifest

File version

Not Applicable

File size

10,228

Date (UTC)

7-Jun-12

Time (UTC)

5:53

Platform

Not Applicable

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

File name

Amd64_3b5a1fe8650737375f73d58ae8aeac15_31bf3856ad364e35_6.1.7601.22013_none_01874b4d39983e41.manifest

File version

Not Applicable

File size

1,060

Date (UTC)

8-Jun-12

Time (UTC)

21:28

Platform

Not Applicable

File name

Amd64_e54131f250fc422abce242bda8c26816_31bf3856ad364e35_6.1.7600.21229_none_a1a2723274364642.manifest

File version

Not Applicable

File size

1,060

Date (UTC)

8-Jun-12

Time (UTC)

21:28

Platform

Not Applicable

File name

Amd64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.21229_none_2c6d5cb55bdf4097.manifest

File version

Not Applicable

File size

10,236

Date (UTC)

8-Jun-12

Time (UTC)

7:10

Platform

Not Applicable

File name

Amd64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7601.22013_none_2e5887eb5902f888.manifest

File version

Not Applicable

File size

10,236

Date (UTC)

7-Jun-12

Time (UTC)

6:47

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

3,729

Date (UTC)

8-Jun-12

Time (UTC)

21:28

Platform

Not Applicable

File name

Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.21229_none_36c2070790400292.manifest

File version

Not Applicable

File size

7,906

Date (UTC)

8-Jun-12

Time (UTC)

6:16

Platform

Not Applicable

File name

Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7601.22013_none_38ad323d8d63ba83.manifest

File version

Not Applicable

File size

7,906

Date (UTC)

7-Jun-12

Time (UTC)

5:17

Platform

Not Applicable

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

File name

Ia64_3bcad9ffdbc4ea245e6cd56490d0633e_31bf3856ad364e35_6.1.7601.22013_none_2c554e8943da27b9.manifest

File version

Not Applicable

File size

1,058

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

Ia64_4dc83cb0529d9fe243fbaeecc14ff9d9_31bf3856ad364e35_6.1.7600.21229_none_ad3c1236d5cf3f6d.manifest

File version

Not Applicable

File size

1,058

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

Ia64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.21229_none_d0506527a37fd85d.manifest

File version

Not Applicable

File size

10,232

Date (UTC)

8-Jun-12

Time (UTC)

7:09

Platform

Not Applicable

File name

Ia64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7601.22013_none_d23b905da0a3904e.manifest

File version

Not Applicable

File size

10,232

Date (UTC)

7-Jun-12

Time (UTC)

5:53

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,767

Date (UTC)

8-Jun-12

Time (UTC)

21:27

Platform

Not Applicable

File name

Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.21229_none_36c2070790400292.manifest

File version

Not Applicable

File size

7,906

Date (UTC)

8-Jun-12

Time (UTC)

6:16

Platform

Not Applicable

File name

Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7601.22013_none_38ad323d8d63ba83.manifest

File version

Not Applicable

File size

7,906

Date (UTC)

7-Jun-12

Time (UTC)

5:17

Platform

Not Applicable

Additional file information for Windows 8 and of Windows Server 2012

Additional files for all supported x86-based versions of Windows 8

File name

Update.mum

File version

Not Applicable

File size

9,763

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

X86_ada341f25afeaf2dad7fbbceaf90628c_31bf3856ad364e35_6.2.9200.20579_none_ed61b3c531172e32.manifest

File version

Not Applicable

File size

713

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

X86_microsoft-windows-i..rewebenginebinaries_31bf3856ad364e35_6.2.9200.20579_none_9248a728106538c6.manifest

File version

Not Applicable

File size

7,012

Date (UTC)

08-Dec-2012

Time (UTC)

15:54

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 8 and of Windows Server 2012

File name

Amd64_566baf27d82fe4447f182d61919d84f7_31bf3856ad364e35_6.2.9200.20579_none_b9b4ee7661ec7572.manifest

File version

Not Applicable

File size

717

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

Amd64_85f6a210eea197c4ce8eed248b05a05b_31bf3856ad364e35_6.2.9200.20579_none_5ab277da711e1a06.manifest

File version

Not Applicable

File size

1,076

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

Amd64_da2588d6b33dbad2169c099a45e25218_31bf3856ad364e35_6.2.9200.20579_none_5c5f9b1060c4c2d2.manifest

File version

Not Applicable

File size

717

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

Amd64_microsoft-windows-i..rewebenginebinaries_31bf3856ad364e35_6.2.9200.20579_none_ee6742abc8c2a9fc.manifest

File version

Not Applicable

File size

7,018

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

10,055

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

File name

Wow64_microsoft-windows-i..rewebenginebinaries_31bf3856ad364e35_6.2.9200.20579_none_f8bbecfdfd236bf7.manifest

File version

Not Applicable

File size

6,089

Date (UTC)

08-Dec-2012

Time (UTC)

15:52

Platform

Not Applicable

Status

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

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