An error attempting to create a reference to a COM object

Question

Hello, All!
I am trying to create a MFC application, which will expose some methods through COM. There is a small MFC project with an automation-enabled class and a method, which I have created for testing purpose. The project compiles fine and I can see the COM server,
the class, and the method in the Object
Browser. I also can add a reference to it in my VB project and see all its classes, interfaces and methods in the Class View. All this is also available at design time (IntelliSence sees it perfectly). But I get an error attempting to get a reference
to its class, both by CreateObject function in VB\VBS and "New" keyword in VB. COMException 80040154. There is a lot of topics on MSDN forums with references to this error, but none of them is exactly my case. (In my case it is an .exe file and attempts
to
register the component with regsvr32 do not work...)
Thanks for your help in advance!
Shakin Alexey

Answer 1

From the error, it is more likely you com dll is not registered. Please check this: COM error code list
https://msdn.microsoft.com/en-us/library/windows/desktop/dd542643(v=vs.85).aspx
REGDB_E_CLASSNOTREG0x80040154
Class not registered
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