Since Windows Update kb4340556: VBA COM .NET Automation error on CreateObject()

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Since the update Windows7 Update KB 4340556 of the Jul 10, 2018 we get the following error message:

"Automation Error" : The system cannot find the file specified" from the Access VBA CreateObject() call.

 Set ComClass = CreateObject("MyApplication1.InteropStart") 

Microsoft identifies this as a security issue.

If we uninstall the update KB4340556, the call will work as before.

Does anyone have the same problem? Or a better solution than the update to uninstall?


Our Interop .Net Assembly had a signature with a strong name. The signing is apparently no longer accepted. Creating a new signature (* .snk file) in Visual Studio causes the CreateObject ComInterop call to work again.


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