NotMarshalable
The NotMarshalable managed debugging assistant (MDA) is activated when the common language runtime (CLR) encounters a COM interface pointer without a valid registered proxy/stub or an incorrect IMarshal interface implementation while attempting to marshal the interface across contexts.
Symptoms
Calls are not serviced, or calls occur in the wrong context for COM interface pointers.
Cause
No valid registered proxy/stub or an incorrect IMarshal while attempting to marshal the interface across contexts.
Resolution
Make sure you have a proxy stub registered and that the IMarshal implementation is valid.
Effect on the Runtime
This MDA has no effect on the runtime.
Output
A message describing the problem.
Configuration
<mdaConfig>
<assistants>
<notMarshalable/>
</assistants>
</mdaConfig>
See Also
Reference
Concepts
Diagnosing Errors with Managed Debugging Assistants
Interop Marshaling Overview