Component Object Model (COM) Error – SDIAG_E_MANAGEDHOST 0x803C0103

In this post, you’ll learn about the error “SDIAG_E_MANAGEDHOST 0x803C0103” 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.

An error occurred in the Scripted Diagnostic Managed Host.