Component Object Model (COM) Error – ERROR_VHD_PARENT_VHD_ACCESS_DENIED 0xC03A0016

In this post, you’ll learn about the error “ERROR_VHD_PARENT_VHD_ACCESS_DENIED 0xC03A0016” that is returned when working with COM based APIs or libraries in Windows.

COM Error Message


What is COM?

Microsoft’s COM stands for Component Object Model. Component Object Model (COM) is a networked, object-oriented framework for building interoperable binary software components.   Microsoft’s OLE (compound documents), ActiveX (Internet-enabled components), and other products are built on the COM base technology.

Error Description

Below is the description of this COM Error.

The chain of virtual hard disks is inaccessible. The process has not been granted access rights to the parent virtual hard disk for the differencing disk.