Component Object Model (COM) Error – TRUST_E_NOSIGNATURE 0x800B0100

In this post, you’ll learn about the error “TRUST_E_NOSIGNATURE 0x800B0100” 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.

No signature was present in the subject.