To allow 32-bit applications to run on a 64-bit operating system, a 32-bit user-mode display driver must be provided in addition to the 64-bit user-mode display driver that 64-bit applications require. However, only the 64-bit version of a display miniport driver is required on a 64-bit operating system. Windows on Windows (WOW64) enables 32-bit applications to run on a 64-bit operating system. Fo
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