In this post, you’ll learn about the error “CRYPT_E_AUTH_ATTR_MISSING 0x80091006” that is returned when working with COM based APIs or libraries in Windows.
COM Error Message
CRYPT_E_AUTH_ATTR_MISSING 0x80091006
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 cryptographic message does not contain an expected authenticated attribute.
