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.NET Forum / .NET Framework / Distributed Applications / November 2003

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System.InvalidCastException - QueryInterface Fails

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Mohammad - 07 Nov 2003 14:45 GMT
Hi:

I have a com+ component installed using a application proxy on a
remote computer. By the way, I have no problems when running the local
client.

The problem occurs when I try to execute a method on the remote
object:

-------------------------------------------------------------------------------

An unhandled exception of type 'occurred
in MyClient.exe

Additional information: QueryInterface for interface
MyComponentLib.IMyInterface failed.

-------------------------------------------------------------------------------

The instantiation of the object by CreateObject succeeds.

I'll appreciate any help...

Thanks
news.microsoft.com - 11 Nov 2003 04:58 GMT
I have has this problem myself on 2 occasions.  It happens when the com+
object throws null reference exception on a property or when a type
conversion fails.  I have not been able to fix this issue as I did not write
the com+ application.

> Hi:
>
[quoted text clipped - 20 lines]
>
> Thanks

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