Component Object Model (COM) Error – TPMAPI_E_INVALID_KEY_SIZE 0x8029010F

In this post, you’ll learn about the error “TPMAPI_E_INVALID_KEY_SIZE 0x8029010F” that is returned when working with COM based APIs or libraries in Windows.

COM Error Message

TPMAPI_E_INVALID_KEY_SIZE 0x8029010F

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 size is not valid.