In this post, you’ll learn about the error “CO_E_THREADINGMODEL_CHANGED 0x8004E028” that is returned when working with COM based APIs or libraries in Windows.
COM Error Message
CO_E_THREADINGMODEL_CHANGED 0x8004E028
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 components threading model has changed after install into a COM+ Application. Please re-install component.
