Component Object Model (COM) Error – TPM_E_BAD_KEY_PROPERTY 0x80280028

In this post, you’ll learn about the error “TPM_E_BAD_KEY_PROPERTY 0x80280028” that is returned when working with COM based APIs or libraries in Windows.

COM Error Message

TPM_E_BAD_KEY_PROPERTY 0x80280028

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 key properties in TPM_KEY_PARMs are not supported by this TPM.