FIX: Performance may decrease when you use the IIS ADSI provider to query some metabase properties in IIS 7.5

Applies to: Windows 7 EnterpriseWindows 7 ProfessionalWindows 7 Ultimate

Symptoms


Consider the following scenario:
  • You install Internet Information Services (IIS) 7.5 on a computer that is running Windows 7 or Windows Server 2008 R2. Additionally, you install one of the following features when you install IIS 7.5:
    • The IIS 6 Metabase and IIS 6 configuration compatibility feature on a computer that is running Windows 7
    • The IIS 6 Metabase Compatibility role service on a computer that is running Windows Server 2008 R2
  • You run an application that queries some IIS metabase properties by using the IIS Active Directory Service Interfaces (ADSI) provider. The application repeatedly opens and closes all references that are related to the IIS metabase.
In this scenario, a memory leak occurs in the application and in the Inetinfo.exe process. Therefore, performance may decrease.

Cause


This issue occurs because of an error in the IIS ADSI provider.

Resolution


Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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: Note 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 IIS 7.5 installed on a computer that is running one of the following operating systems:
  • Windows 7
  • Windows Server 2008 R2

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfix.

File Information

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it 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 nameFile versionFile sizeDateTimePlatform
Adsiis.dll7.5.7600.20879289,79213-Jan-201105:37x86
Iisext.dll7.5.7600.2087986,01613-Jan-201105:39x86
Adsiis.dll7.5.7601.21640289,79213-Jan-201105:34x86
Iisext.dll7.5.7601.2164086,01613-Jan-201105:35x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Adsiis.dll7.5.7600.20879333,31213-Jan-201106:15x64
Iisext.dll7.5.7600.20879107,00813-Jan-201106:17x64
Adsiis.dll7.5.7601.21640333,31213-Jan-201106:19x64
Iisext.dll7.5.7601.21640107,00813-Jan-201106:21x64
Adsiis.dll7.5.7600.20879289,79213-Jan-201105:37x86
Iisext.dll7.5.7600.2087986,01613-Jan-201105:39x86
Adsiis.dll7.5.7601.21640289,79213-Jan-201105:34x86
Iisext.dll7.5.7601.2164086,01613-Jan-201105:35x86
For all supported IA-64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Adsiis.dll7.5.7600.20879535,04013-Jan-201105:21IA-64
Iisext.dll7.5.7600.20879229,37613-Jan-201105:24IA-64
Adsiis.dll7.5.7601.21640535,04013-Jan-201105:10IA-64
Iisext.dll7.5.7601.21640229,37613-Jan-201105:12IA-64
Adsiis.dll7.5.7600.20879289,79213-Jan-201105:37x86
Iisext.dll7.5.7600.2087986,01613-Jan-201105:39x86
Adsiis.dll7.5.7601.21640289,79213-Jan-201105:34x86
Iisext.dll7.5.7601.2164086,01613-Jan-201105:35x86
Additional files for all supported x86-based versions of Windows 7
File nameUpdate.mum
File versionNot Applicable
File size2,684
Date (UTC)13-Jan-2011
Time (UTC)17:18
PlatformNot Applicable
File nameX86_16202cc9d577e5eaf96d1851e7e84563_31bf3856ad364e35_6.1.7600.20879_none_bcadf91746662d9f.manifest
File versionNot Applicable
File size709
Date (UTC)13-Jan-2011
Time (UTC)17:17
PlatformNot Applicable
File nameX86_249e01b1b75ed4ad8926eb9ea458d79a_31bf3856ad364e35_6.1.7601.21640_none_31e14281293a56c0.manifest
File versionNot Applicable
File size709
Date (UTC)13-Jan-2011
Time (UTC)17:17
PlatformNot Applicable
File nameX86_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7600.20879_none_e809fca45bc0f101.manifest
File versionNot Applicable
File size19,620
Date (UTC)13-Jan-2011
Time (UTC)06:17
PlatformNot Applicable
File nameX86_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7601.21640_none_ea07c6d458d7250b.manifest
File versionNot Applicable
File size19,620
Date (UTC)13-Jan-2011
Time (UTC)06:10
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008
File nameAmd64_b488168c3df26cd33b34b6b0ccb7062a_31bf3856ad364e35_6.1.7601.21640_none_c12d8eae843a5f14.manifest
File versionNot Applicable
File size1,068
Date (UTC)13-Jan-2011
Time (UTC)17:18
PlatformNot Applicable
File nameAmd64_c76b66a08defadb3d299de6bbc536973_31bf3856ad364e35_6.1.7600.20879_none_b2137c8f08123cf0.manifest
File versionNot Applicable
File size1,068
Date (UTC)13-Jan-2011
Time (UTC)17:18
PlatformNot Applicable
File nameAmd64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7600.20879_none_44289828141e6237.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)07:03
PlatformNot Applicable
File nameAmd64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7601.21640_none_4626625811349641.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)07:03
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size3,120
Date (UTC)13-Jan-2011
Time (UTC)17:18
PlatformNot Applicable
File nameWow64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7600.20879_none_4e7d427a487f2432.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)06:09
PlatformNot Applicable
File nameWow64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7601.21640_none_507b0caa4595583c.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)06:02
PlatformNot Applicable
 
Additional files for all supported IA-64-based versions of Windows Vista and of Windows Server 2008
File nameIa64_335c28dfe1ba8ef3a4876d09468d5216_31bf3856ad364e35_6.1.7600.20879_none_057f4a57da8a8e6b.manifest
File versionNot Applicable
File size1,066
Date (UTC)13-Jan-2011
Time (UTC)17:17
PlatformNot Applicable
File nameIa64_734cb2d12d60b3536b03417e4256437d_31bf3856ad364e35_6.1.7601.21640_none_a6dc520a0d41ef49.manifest
File versionNot Applicable
File size1,066
Date (UTC)13-Jan-2011
Time (UTC)17:17
PlatformNot Applicable
File nameIa64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7600.20879_none_e80ba09a5bbef9fd.manifest
File versionNot Applicable
File size19,623
Date (UTC)13-Jan-2011
Time (UTC)06:58
PlatformNot Applicable
File nameIa64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7601.21640_none_ea096aca58d52e07.manifest
File versionNot Applicable
File size19,623
Date (UTC)13-Jan-2011
Time (UTC)07:00
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,347
Date (UTC)13-Jan-2011
Time (UTC)17:17
PlatformNot Applicable
File nameWow64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7600.20879_none_4e7d427a487f2432.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)06:09
PlatformNot Applicable
File nameWow64_microsoft-windows-iis-adsicompatibility_31bf3856ad364e35_6.1.7601.21640_none_507b0caa4595583c.manifest
File versionNot Applicable
File size19,626
Date (UTC)13-Jan-2011
Time (UTC)06:02
PlatformNot Applicable


Status


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

Workaround


To work around this issue, create and maintain one instance of the IIS://Localhost/W3SVC object while the application runs.