Unable to connect CIFS share with error User is not known
Applies to
- ONTAP 9
- Common Internet File System(CIFS)
- SMB
Issue
- All configuration include IP address keep the original configuration.
- Some CIFS clients are not able to connect to CIFS shares.
- Since the storage hardware was changed, the clients that encountered this CIFS share access problem have never restarted.
- SecD error indicates error.
11/18/2021 11:19:05 node1 ERROR secd.cifsAuth.problem: vserver (NAS) General CIFS authentication problem. Error: User authentication procedure failed
CIFS SMB2 Share mapping - Client Ip = 192.xx.xx.xx
[ 0 ms] Login attempt by local user '.\username' using NTLMv2 style security
[ 0] User is not known
[ 0] Unable to find the NetBIOS domain name for Active Directory '.'
**[ 0] FAILURE: CIFS authentication failed
[ 0] Unable to find the NetBIOS domain name for Active Directory '.'