Class does not support aggregation

This class cannot be created as part of an aggregate. Returned by the class factory's IClassFactory::CreateInstance when the pUnkOuter parameter is non-NULL but the object does not support aggregation.

References

learn.microsoft.com/en-us/windows/win32/com/aggregation

In this namespace

← previous CLASS_E_CLASSNOTAVAILABLE Class not available next → CO_E_ALREADYINITIALIZED COM already initialised

CLASS_E_CLASSNOTAVAILABLE CLASS_E_NOAGGREGATION CO_E_ALREADYINITIALIZED CO_E_CREATEPROCESSFAILED CO_E_NOTINITIALIZED D2DERR_INVALID_CALL D2DERR_NOT_INITIALIZED