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System.Runtime.InteropServices - An approach to debugging for COMException (0x80010108)

By , 25 Dec 2011
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I got this error using Office automation:
System.Runtime.InteropServices.COMException (0x80010108): The object invoked has disconnected from its clients. (Exception from HRESULT: 0x80010108 (RPC_E_DISCONNECTED)),

It can be nasty to debug.
One strategy to address this error is to see if an event has occurred to interrupt the Office application running under automation.
I traced my problem to a Word macro I was running from a Visual Basic program. I did not notice that the macro caused Word to exit. Once Word shut down, the automation couldn't continue and I got the error that the "object invoked has disconnected."
The solution was to edit the macro so it ran without shutting down Word.
Perhaps this will help someone.


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Dhruva Hein

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