RE: Problem getting UserGUID from Exchange OnSave event sink

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Hi,

Based on my understanding, you wanted to do Exchange Server side event sink
with OnSave event.
But when the event fired and you are trying to access the
dispInfo.UserGuid, you will get the error description per your post.
**** EXCEPTION ****
Catastrophic failure (Exception from HRESULT: 0x8000FFFF
(E_UNEXPECTED))
**** STACKTRACE ****
at Interop.Exevtsnk.IExStoreDispEventInfo.get_UserGuid()
at EventSinkTest2.EventSinkTest.OnSave(IExStoreEventInfo evInfo,
String sURL, Int32 iFlags) in E:\Documents and
Settings\Administrator.EDIARY\My Documents\Visual Studio
2005\Projects\EventSinkTest2\EventSinkTest2\EventSinkTest.cs:line 105

From the exception, "Catastrophic failure" which is a general COM
exception, it is hard to guess what may be the problem.

But as your suspect, this may be a COM interop issue, to isolate the
problem, I suggest you try to sink the same event with a VBScript to see if
the problem persists.
Because to use C# to handle Event Sink, we need additional .NET com interop
library wrapper, to test with VBScript will help us to quick isolate the
problem is specific to the COM inteop layer
or the Exchange Server environment or configuration.

I will appreciate your efforts.

Best regards,

Peter Huang

Microsoft Online Community Support
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