Why does the MATLAB process fail to terminate after I have used ACTXSERVER to call a COM object?

I am using MATLAB to interact with my COM object using ACTXSERVER. After I have worked with the COM object, I then exit MATLAB. The MATLAB process, however, does not terminate. In order to stop this process, I have to kill MATLAB from the Windows Task Manager.

Answer 1

[MathWorks Support Team]

This behavior is caused by how certain COM servers handle terminating. Some COM servers will not exit unless they have been properly shutdown. For example, in Excel you must close all open sheets. After appropriately terminating the COM server, MATLAB will exit correctly.