The WinINet functions return error codes where appropriate. The following errors are specific to the WinINet functions. ERROR_FTP_DROPPED 12111 The FTP operation was not completed because the session was aborted. ERROR_FTP_NO_PASSIVE_MODE 12112 Passive mode is not available on the server. ERROR_FTP_TRANSFER_IN_PROGRESS 12110 The requested operation cannot be made on the FTP session handle because
![Error Messages (Wininet.h) - Win32 apps](https://cdn-ak-scissors.b.st-hatena.com/image/square/d6e4cb632c7025e9f5e05fd314fbf6dcd6144e8d/height=288;version=1;width=512/https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fmedia%2Fopen-graph-image.png)