case NtStatus.NT_STATUS_MORE_PROCESSING_REQUIRED:
            break; /* normal for SPNEGO */
        case 0x10B: // NT_STATUS_NOTIFY_CLEANUP:
        case NtStatus.NT_STATUS_NOTIFY_ENUM_DIR:
            break;
        case 0xC00000BB: // NT_STATUS_NOT_SUPPORTED
        case 0xC0000010: // NT_STATUS_INVALID_DEVICE_REQUEST
            throw new SmbUnsupportedOperationException();