Component Object Model (COM) Error – WS_E_INVALID_ENDPOINT_URL 0x803D0020

In this post, you’ll learn about the error “WS_E_INVALID_ENDPOINT_URL 0x803D0020” that is returned when working with COM based APIs or libraries in Windows.

COM Error Message

WS_E_INVALID_ENDPOINT_URL 0x803D0020

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 endpoint address URL is invalid.