Zugriffsverletzung in "Wininet.dll", wenn ein Programm "InternetSetOption" aufruft

void f1()
{
   return;
}

void main ()
{
   HINTERNET hInternetOpen;
   INTERNET_PER_CONN_OPTION_LIST List;
   INTERNET_PER_CONN_OPTION Option[OPTIONS];
   unsigned long nSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
   Option[0].dwOption = INTERNET_PER_CONN_PROXY_SERVER;
   Option[1].dwOption = INTERNET_PER_CONN_FLAGS;

   List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
   List.pszConnection = NULL;
   List.dwOptionCount = OPTIONS;
   List.dwOptionError = 0;
   List.pOptions = Option;
   hInternetOpen=InternetOpen("MyRequester",
      INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);

   f1();
	   Option[0].Value.pszValue = "http://MyProxy";
   Option[1].Value.dwValue = PROXY_TYPE_PROXY;

   InternetSetOption(hInternetOpen, 
      INTERNET_OPTION_PER_CONNECTION_OPTION, &List, nSize);
	 
   InternetCloseHandle(hInternetOpen);
}