In this post, you’ll learn about the error “CERTSRV_E_BAD_REQUEST_KEY_ARCHIVAL 0x8009400C” that is returned when working with COM based APIs or libraries in Windows.
COM Error Message
CERTSRV_E_BAD_REQUEST_KEY_ARCHIVAL 0x8009400C
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 request is incorrectly formatted. The encrypted private key must be in an unauthenticated attribute in an outermost signature.