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Posted 28 Jan 2010

Disabling Windows file system redirection on a CFileDialog

, 24 Apr 2010
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Windows on Windows 64-bit (WOW64) provides file system redirection. In a 64-bit version of Windows Server 2003 or of Windows XP, the %WinDir%\System32 folder is reserved for 64-bit applications. When a 32-bit application tries to access the System32 folder, access is redirected to the following folder:
By default, file system redirection is enabled.


You can use the following functions to control file system redirection:

  • Wow64DisableWow64FsRedirection
  • Wow64EnableWow64FsRedirection
  • Wow64RevertWow64FsRedirection

The problem is that it is disabled on the current thread. Hence I faced a problem where I could not use CFileDialog Box to access the System32 folder. I searched on the net and could not find an article, so here goes my first article :)

Using the Code

You should derive a class from CFileDialog. And in the constructor, disable the flags and enable it back again in the destructor :)

class CFileDialogEx :	public CFileDialog
	PVOID OldValue;


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Kartik Sura
Software Developer
India India
This member doesn't quite have enough reputation to be able to display their biography and homepage.

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Comments and Discussions

GeneralReason for my vote of 5 Good Document Pin
Gyu-Sang Cho7-Feb-11 9:44
memberGyu-Sang Cho7-Feb-11 9:44 
Generaldoes not work on post vista Pin
Kartik Sura27-May-10 21:38
memberKartik Sura27-May-10 21:38 

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