In this post, you’ll learn more about the Error RPC_E_CANTCALLOUT_INASYNCCALL – 0x80010004 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
RPC_E_CANTCALLOUT_INASYNCCALL – 0x80010004
Win32 COM Error Error Description
The caller is dispatching an asynchronous call and cannot make an outgoing call on behalf of this call.