Component Object Model (COM) Error – SEC_E_PKINIT_NAME_MISMATCH 0x8009033D

In this post, you’ll learn about the error “SEC_E_PKINIT_NAME_MISMATCH 0x8009033D” that is returned when working with COM based APIs or libraries in Windows.

COM Error Message

SEC_E_PKINIT_NAME_MISMATCH 0x8009033D

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 client certificate does not contain a valid UPN, or does not match the client name in the logon request. Please contact your administrator.