Component Object Model (COM) Error – TPM_E_BUFFER_LENGTH_MISMATCH 0x8029041E

In this post, you’ll learn about the error “TPM_E_BUFFER_LENGTH_MISMATCH 0x8029041E” 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.

The buffer lengths do not match.