Applies ToMicrosoft Windows XP Home Edition Microsoft Windows XP Professional Windows Vista Enterprise 64-bit Edition Windows Vista Home Basic 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Business Windows Vista Business 64-bit Edition Windows Vista Enterprise Windows Vista Home Basic Windows Vista Home Premium Windows Vista Ultimate Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Standard Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Datacenter without Hyper-V Windows Server 2008 Enterprise without Hyper-V Windows Server 2008 Standard without Hyper-V Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Ultimate

BUG #: 116604 (Content Maintenance)BUG #: 521822 (DDS)

Symptoms

You have a Windows Explorer shell extension that is developed by the Microsoft Foundation Class library (MFC). The shell extension is hosted in Windows Explorer. However, the Explorer.exe process stops responding (hangs) when you open Windows Explorer.

Cause

This problem occurs because of a code defect in MFC.

Resolution

A security update fixes this issue. To download the update, visit the following Microsoft Web site:

Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package ATL Security Update For more information about this update, visit the following Microsoft Web site:

Description of the security update for Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package: July 28, 2009 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 Web site:

Contact Microsoft

More Information

This problem exists in the following MFC modules whose versions are in the range between 9.0.30304.0 and 9.0.30729.176.

  • MFC90.dll

  • MFC90u.dll

  • MFC90d.dll

  • MFC90ud.dll

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