In this post, you’ll learn more about the Error ERROR_VHD_CHILD_PARENT_SIZE_MISMATCH – 0xC03A0017 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
ERROR_VHD_CHILD_PARENT_SIZE_MISMATCH – 0xC03A0017
Win32 COM Error Error Description
The chain of virtual hard disks is corrupted. There is a mismatch in the virtual sizes of the parent virtual hard disk and differencing disk.