Error 0x80072749

Value: -2147014839 | 0x80072749 | 2147952457

What does it mean ?

WSAENOTCONN  
A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied.
Value: 10057 | 0x2749 | 0b0010011101001001

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

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