In this post, you’ll learn about the error “STG_E_CSS_KEY_NOT_PRESENT 0x80030307” 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.
Below is the description of this COM Error.
Copy Protection Error – The given sector does not have a valid CSS key.