Resolution:
Description:
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When attempting to run a 32-bit COM client on a 64-bit machine, one of the following errors are observed:

System.Runtime.InteropServices.COMException (0x8004021A): Object cannot
complete the requested operation
   at TIBRVCOMLib.TibrvClass.getAutoDispatchQueueGroup()

System.Runtime.InteropServices.COMException (0x80040208): Unable to create
window for auto dispatch
   at TIBRVCOMLib.TibrvQueueGroupClass.add(TibrvQueue queue)

System.Runtime.InteropServices.COMException (0x80040154): Retrieving the
COM class factory for component with CLSID
{60A084A9-3A5C-11D3-86AD-00105A07602D} failed due to the following error:
80040154.

Environment:
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Windows

Resolution:
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The CPU setting in Visual Studio must be set explicitly to "x86" when building the application – default setting is "Any CPU".

In Visual Studio 2005 this setting can be configured in the Project Properties -> Compile -> Advanced Compile Options -> Target CPU, and in Visual Studio 2008 the setting can be configured in Project Properties -> Compile -> Platform.

Rebuilding the project with compilation setting of "x86" allows the 32-bit COM application to run on a 64-bit machine without any issues.

System.Runtime.InteropServices.COMException when running 32-bit COM application on 64-bit machine