Occurs when a feed folder event error occurs.
Returns S_OK if successful, or E_NOTIMPL.
The Error event is raised when something unexpected happens in the eventing subsystem, such as running out of memory. This event is also fired when any of the event sink handlers return an HRESULT that is neither S_OK nor E_NOTIMPL. The application should assume that it did not receive all events.
Handle this event by recreating the event sinks, as if the application had just been launched.