error C1083 visual studio 2013 for winsock server - visual-studio-2013

Question

i'm new at this website.
i searched a lot for a solution but i didn't find nothing about it.
i programmed a server and a client on another project and it was working but i wanted to re-program it to have a better results.
but i dunno why i have some errors: error C1083: impossible to open: 'Debug\chatserver.pch': No such file or directory c:\users\x\documents\visual studio 2013\projects\chatserver\chatserver\chatserver.cpp
before this error, i had another error on 'itoa' function: C4996 'itoa' POSIX ...
(itoa function was working on my 1st server project)
also i had error on LNK 2011 to .obj
this is the code:
#include "stdafx.h"
#include <WinSock2.h>
#include <Windows.h>
#include <iostream>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <cstdlib>
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#pragma comment(lib, "Ws2_32.lib")
#define DEFAULT_PORT "27015"
using namespace std;
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket;
SOCKET* Connessioni;
int nConn = 0;
struct Buffer
{
int ID;
char nickname[20];
char messaggio[1024];
};
int ServerThread(int ID)
{
Buffer buff;
char* Recv = new char[1024];
char* Pnick = new char[20];
char* Send = new char[1024];
Recv = NULL;
Pnick = NULL;
Send = NULL;
for (;;){
if (recv(Connessioni[ID], Recv, 1024, NULL) && recv(Connessioni[ID], Pnick, 20, NULL))
buff.ID = ID;
memcpy(buff.nickname, Pnick, 1024);
memcpy(buff.messaggio, Recv, 1024);
memcpy(Send, &buff, sizeof(Buffer));
for (int i = 0; i != nConn; i++)
{
if (Connessioni[i] == Connessioni[ID])
{
}
else{
send(Connessioni[i], Send, sizeof(Buffer), NULL);
}
}
delete Recv;
delete Send;
delete Pnick;
delete &Recv;
delete &Send;
delete &Pnick;
}
return 0;
}
int InitWinSock()
{
int RetVal = 0;
WSAData wsaData;
WORD DllVersion = MAKEWORD(2, 2);
RetVal = WSAStartup(DllVersion, &wsaData);
if (RetVal != 0)
MessageBoxA(NULL, "WSA error, please retry", "Error", MB_OK | MB_ICONERROR);
return RetVal;
}
int main()
{
struct addrinfo *result = NULL, *ptr = NULL, hints;
ZeroMemory(&hints, sizeof (hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
int controllo_struct = getaddrinfo(NULL,DEFAULT_PORT, &hints, &result);
if (controllo_struct != 0)
{
MessageBoxA(NULL, "getinfo failes \n", "Error", MB_OK | MB_ICONERROR);
WSACleanup();
return 1;
}
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (ListenSocket == INVALID_SOCKET)
{
MessageBoxA(NULL, "Error at Socket, please retry \n", "Error", MB_OK | MB_ICONERROR);
freeaddrinfo(result);
WSACleanup();
}
int controllo_bind = bind(ListenSocket,result->ai_addr,(int)result->ai_addrlen);
if (controllo_bind == SOCKET_ERROR)
{
MessageBoxA(NULL, "bind ha fallito \n", "Error", MB_OK | MB_ICONERROR);
cout << WSAGetLastError() << endl;
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
return 1;
}
freeaddrinfo(result);
if (listen(ListenSocket, SOMAXCONN) == SOCKET_ERROR){
MessageBoxA(NULL, "Listen ha fallito \n", "Error", MB_OK | MB_ICONERROR);
cout << WSAGetLastError() << endl;
closesocket(ListenSocket);
return 1;
}
ClientSocket = INVALID_SOCKET;
int addrlen = sizeof(hints);
for (;;){
if (ClientSocket = accept(ListenSocket, (SOCKADDR*)&hints, &addrlen))
Connessioni = (SOCKET*)calloc(SOMAXCONN, sizeof(hints));
cout << "connessione accettata " << endl;
Connessioni[nConn] = ClientSocket;
char* nickname = new char[20];
ZeroMemory(nickname, sizeof(nickname));
//itoa(nConn,nickname,10);
//nickname = (char*)nConn;
send(Connessioni[nConn], nickname, sizeof(nickname), NULL);
++nConn;
CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)ServerThread, (LPVOID)(nConn - 1), NULL, NULL);
delete nickname;
}
return 0;
}

Answer 1

RESOLVED:
DISABLED: "PRECOMPILED HEADER"
on c/c++ -> all options ->> "precompiled header (selected: NO)