Users search Timeout

Hi I’ve joined a Nas(qnap) to sharing dir! Now users search by nas go in timeout

This is error in lo.samba:
[2017/11/03 12:26:41.448962, 3, pid=1880] …/source4/smbd/service_stream.c:66(stream_terminate_connection)
Terminating connection - ‘ldapsrv_call_loop: tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED’

Kerberos: Failed to decrypt PA-DATA – NAS-CGIL$@DOMAIN.INTRANET (enctype aes256-cts-hmac-sha1-96) error Decrypt integrity check failed for checksum type hmac-sha1-96-aes256, key type aes256-cts-hmac-sha1-96

Can you help me?

Solved reconfiguring Bind User and Password on Nas