Windows 2000では LogonUser APIが通常実行できない

   if ( !OpenProcessToken(GetCurrentProcess(),
               TOKEN_ADJUST_PRIVILEGES,
               &hProcessToken) )
   {
      _tprintf(_T("OpenProcessToken failed with error 0x%.8X\n"), GetLastError() );
      return FALSE;
   }

   if ( !LookupPrivilegeValue(
         NULL,
         SE_TCB_NAME,
         &luid ) )
   {
      _tprintf(_T("LookupPrivilegeValue failed with error 0x%.8X\n"), GetLastError() );
      CloseHandle(hProcessToken);
      return FALSE;
   }

   tp.PrivilegeCount = 1;
   tp.Privileges[0].Luid = luid;
   tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

   // Enable the privilege
   if ( !AdjustTokenPrivileges(
            hProcessToken,
            FALSE,
            &tp,
            sizeof(TOKEN_PRIVILEGES),
            (PTOKEN_PRIVILEGES) NULL,
            (PDWORD) NULL) )
   {
      _tprintf(_T("AdjustTokenPrivileges failed with error 0x%.8X\n"), GetLastError() );
      CloseHandle(hProcessToken);
      return FALSE;
   }

   CloseHandle(hProcessToken);

   if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
   {
      _tprintf(_T("The token does not have the privilege \"SeTcbPrivilege\". \n"));
      return FALSE;
   }

   return TRUE;
}