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A Hotfix is a product update package with one or more updated product files that fix a specific product problem.


Please be aware this Hotfix has not gone through full Microsoft product regression testing nor has it been tested in combination with other Hotfixes.

Please carefully review the associated Hotfix KB article to verify the fix is the one needed and there are no known compatibility or installation issues. You may also want to contact a Microsoft Support Professional at

Issue Description

When using Windows Explorer (explorer.exe) that hosts a shell extension written using MFC, Windows Explorer may hang. This affects only those shell extensions using MFC versions shipped with Visual Studio 2008 Service Pack 1 or Visual Studio 2008 RTM plus the Visual C++ 2008 Feature Pack. If you are using dll version of MFC this bug is present in MFC90.dll, MFC90u.dll, MFC90d.dll and MFC90ud.dll (versions 9.0.30304.0 to 9.0.30729.176).

Additional Information about the issue resolved by this Hotfix can be found in its Knowledge Base article at

Additional Hotfixes
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at*
Last edited Jul 1 2009 at 6:24 PM  by DDHotfix, version 2
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