SECURITY_ATTRIBUTES sa;
        sa.nLength = sizeof(SECURITY_ATTRIBUTES);
        sa.lpSecurityDescriptor = NULL;
        sa.bInheritHandle = TRUE;

        hPipe=CreateNamedPipe(PipeName, PIPE_ACCESS_DUPLEX,
                              PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
                              PIPE_UNLIMITED_INSTANCES, PIPE_BUFF_SIZE, PIPE_BUFF_SIZE,
                              NMPWAIT_USE_DEFAULT_WAIT, &sa
                             );

SECURITY_ATTRIBUTES saPipe;
 
    saPipe.lpSecurityDescriptor = (PSECURITY_DESCRIPTOR) Malloc(SECURITY_DESCRIPTOR_MIN_LENGTH);
    InitializeSecurityDescriptor(saPipe.lpSecurityDescriptor, SECURITY_DESCRIPTOR_REVISION);
    SetSecurityDescriptorDacl(saPipe.lpSecurityDescriptor, TRUE, (PACL) NULL, FALSE);
    saPipe.nLength = sizeof(saPipe);
    saPipe.bInheritHandle = TRUE;