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ShopAn application that sends an IOCTL_SFFDISK_DEVICE_COMMAND request to a Secure Digital (SD) card receives an error message on a 64-bit version of Windows Vista: “ERROR_ACCESS_DENIED”
Consider the following scenario:
- You develop an application that sends an IOCTL_SFFDISK_DEVICE_COMMAND request to a Secure Digital (SD) card.
- You compile the application on a 32-bit version of Windows Vista.
In this scenario, the application obtains a “Success” value from the SD card. However, when a 64-bit version of Windows Vista uses the Microsoft Windows-32-on-Windows-64 (WOW64) subsystem to run the 32-bit application, the application obtains the following error message from the SD card:
ERROR_ACCESS_DENIED
There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Windows6.0-KB944240-x86.msu
64-Bit Download: Windows6.0-KB944240-x64.msu
This issue is resolved in SP1.For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB944240.
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