DhcpGetClientInfo and Error 1783 in Vista

Question

Hello,

Sample Code below always returns error code 1783 in Vista (SP1) but works fine in Windows XP (SP3). Is it bug or my mistake?

 

I'm use:

1) Windows Software Development Kit (SDK) for Windows Server 2008 and .NET Framework 3.5

2) VS2005 (SP1)

 

Code Snippet

....
#include <windows.h>
#include <dhcpsapi.h>

#pragma comment(lib, "Dhcpsapi.lib")

...

DWORD GetClientInfoByMAC(LPCTSTR pszDhcpServerIP, BYTE* pMac, DWORD nMacLength, DHCP_CLIENT_INFO** ppInfo)
{
    DHCP_SEARCH_INFO query;
    query.SearchType = DhcpClientHardwareAddress;
    query.SearchInfo.ClientHardwareAddress.DataLength = nMacLength;
    query.SearchInfo.ClientHardwareAddress.Data = pMac;
    return DhcpGetClientInfo(pszDhcpServerIP, &query, ppInfo);
}

...

BYTE Mac[11] = {0};
//Subnet address in host order. (192.168.1.0)
Mac[0] = 0;
Mac[1] = 1;
Mac[2] = 168;
Mac[3] = 192;
//Hardware address type, this is the default value.
Mac[4] = 0x01;    
//My MAC bytes start from here (00:15:60:b0:2d:da)
Mac[5] = 0x00;    
Mac[6] = 0x15;
Mac[7] = 0x60;
Mac[8] = 0xb0;
Mac[9] = 0x2d;
Mac[10] =0xda;

DHCP_CLIENT_INFO* pCI_MAC = {0};
DWORD nError = GetClientInfoByMAC(_T("192.168.1.10"), Mac, sizeof(Mac), &pCI_MAC);
if(nError == ERROR_SUCCESS)
{
    //IT WORKS!!!
    ...
}
else
{
    //ERROR!!!
    ...
}