Component Object Model (COM) Error – SPAPI_E_AUTHENTICODE_PUBLISHER_NOT_TRUSTED 0x800F0243

In this post, you’ll learn about the error “SPAPI_E_AUTHENTICODE_PUBLISHER_NOT_TRUSTED 0x800F0243” 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 publisher of an Authenticode(tm) signed catalog was not established as trusted.