Performance of an application that calls the GetFileAttributesEx function degrades significantly in Windows 7 SP1 or Windows Server 2008 R2 SP1

Symptoms

Consider the following scenarios:

  • You have a computer that has Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1 installed.
  • You have an application that calls the GetFileAttributesEx function to retrieve attribute information from a network-shared file or folder.
  • Thousands of change notification handles are opened. For example, the FindFirstChangeNotification function is called to create some change notification handles.
In this situation, the performance of the application that calls the GetFileAttributesEx function degrades significantly.

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: 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 be running one of the following operating systems:
  • Windows 7 Service Pack 1 (SP1)
  • 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 might have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.
File information

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

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 propertyValue
File nameX86_421acb56652e27406f750324b7d683ee_31bf3856ad364e35_6.1.7601.22476_none_0ea300525f599b5b.manifest
File versionNot applicable
File size693
Date (UTC)10-Oct-13
Time (UTC)6:10
PlatformNot applicable
File nameX86_microsoft-windows-rdbss_31bf3856ad364e35_6.1.7601.22476_none_5c26e4fad8f82210.manifest
File versionNot applicable
File size21,803
Date (UTC)9-Oct-13
Time (UTC)13:09
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File propertyValue
File nameAmd64_721305c94868257ea589da59200d9566_31bf3856ad364e35_6.1.7601.22476_none_6cb8bda10627c694.manifest
File versionNot applicable
File size697
Date (UTC)10-Oct-13
Time (UTC)6:10
PlatformNot applicable
File nameAmd64_microsoft-windows-rdbss_31bf3856ad364e35_6.1.7601.22476_none_b845807e91559346.manifest
File versionNot applicable
File size21,809
Date (UTC)9-Oct-13
Time (UTC)14:18
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File propertyValue
File nameIa64_d3ca423c17bc0072ae56e114e7f4df7c_31bf3856ad364e35_6.1.7601.22476_none_0bb09a9f0dded270.manifest
File versionNot applicable
File size695
Date (UTC)10-Oct-13
Time (UTC)6:10
PlatformNot applicable
File nameIa64_microsoft-windows-rdbss_31bf3856ad364e35_6.1.7601.22476_none_5c2888f0d8f62b0c.manifest
File versionNot applicable
File size21,806
Date (UTC)9-Oct-13
Time (UTC)13:22
PlatformNot applicable
Properties

Article ID: 2893634 - Last Review: Nov 13, 2013 - Revision: 1

Feedback