Hello I are trying to mount a windows share in a Linux box (CentOS Linux release 7.8.2003 (Core)) for image sharing Before using fstab I am trying to mount it manually, but with no success I am quite a linux newbie so there could be something trivial I am missing The linux box can ping the windows machine The folder we want to map is //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular And the mounting point is /mnt/sketch The mounting point exists and is accessible Trying to connect to the remote machine via smbclient is working [plm@vm-308-plm01 /]$ smbclient -L customerGroup.local -U sa-user_plm Enter SAMBA\sa-user_plm's password: Sharename Type Comment --------- ---- ------- ADMIN$ Disk Remote Admin Applications$ Disk C$ Disk Default share GroupFolders Disk IPC$ IPC Remote IPC it$ Disk MTATempStore$ Disk NETLOGON Disk Logon server share RemoteFS Disk SYSVOL Disk Logon server share The folder we are interested is not a first level share, but is a subfolder of the share //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular Can it be a problem? Here the list of the try (and error) done… Attempt 0 sudo mount -t cifs -o username=sa-user_plm //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch Result (sudo cat /var/log/messages ) Apr 12 10:18:23 vm-308-plm01 dockerd: time="2022-04-12T10:18:23.517868010+02:00" level=info msg="NetworkDB stats vm-308-plm01.providercenter.services(45e8e1c36c42) - netID:0x5gnr8y3ifwf4z leaving:false netPeers:5 entries:28 Queue qLen:0 netMsg/s:0" Apr 12 10:18:23 vm-308-plm01 dockerd: time="2022-04-12T10:18:23.517963103+02:00" level=info msg="NetworkDB stats vm-308-plm01.providercenter.services(45e8e1c36c42) - netID:wg0w3e3nfg3defwo leaving:false netPeers:5 entries:29 Queue qLen:0 netMsg/s:0" Apr 12 10:20:01 vm-308-plm01 systemd: Started Session 117381 of user root. Apr 12 10:21:39 vm-308-plm01 snmpd[5625]: truncating integer value > 32 bits Apr 12 10:21:58 vm-308-plm01 kernel: No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount. Apr 12 10:21:58 vm-308-plm01 kernel: CIFS VFS: DFS capability contradicts DFS flag Apr 12 10:21:58 vm-308-plm01 key.dns_resolver: DUBDC1.CUSTOMERGROUP.LOCAL: No address associated with name Apr 12 10:21:58 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -22 Attempt 1 cat /proc/fs/cifs/cifsFYI → 0 echo 1 | sudo tee /proc/fs/cifs/cifsFYI sudo mount -t cifs -o username=sa-user_plm //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch [59182440.769656] No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount. [59182440.799474] CIFS VFS: DFS capability contradicts DFS flag [59182440.852211] CIFS VFS: cifs_mount failed w/return code = -22 Attempt 2 (nounix,sec=ntlmssp ) sudo mount -t cifs -o username=sa-user_plm,nounix,sec=ntlmssp //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch Apr 12 11:14:06 vm-308-plm01 kernel: No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount. Apr 12 11:14:06 vm-308-plm01 kernel: CIFS VFS: DFS capability contradicts DFS flag Apr 12 11:14:06 vm-308-plm01 key.dns_resolver: CASDC1: No address associated with name Apr 12 11:14:06 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -22 Attempt 3 smb vers 1 sudo mount -t cifs -o vers=1.0,username=sa-user_plm,nounix,sec=ntlmssp //customerGroup.local/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch Apr 12 11:15:08 vm-308-plm01 key.dns_resolver: XXYYADC2.CUSTOMERGROUP.LOCAL: No address associated with name Apr 12 11:15:08 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -22 Attempt 4 (IP) Working with IP seems slightly better… the operation went on for a while, but failed sudo mount -t cifs -o vers=1.0,username=sa-user_plm,nounix,sec=ntlmssp //xx.yy.1.235/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch mount error(115): Operation now in progress Apr 12 11:16:54 vm-308-plm01 kernel: CIFS VFS: Error connecting to socket. Aborting operation. Apr 12 11:16:54 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -115 Attempt 5 (IP smb v2) sudo mount -t cifs -o vers=2.0,username=sa-user_plm,nounix,sec=ntlmssp //xx.yy.1.235/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch Apr 12 11:35:41 vm-308-plm01 kernel: CIFS VFS: Error connecting to socket. Aborting operation. Apr 12 11:35:41 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -115 Attempt 6 (IP smb v2 sec=ntlm) sudo mount -t cifs -o vers=2.0,username=sa-user_plm,nounix,sec=ntlm //xx.yy.1.235/GroupFolders/Customer/Site1/Others/prod_images/sketch/regular /mnt/sketch Apr 12 11:52:20 vm-308-plm01 kernel: CIFS VFS: Error connecting to socket. Aborting operation. Apr 12 11:52:20 vm-308-plm01 kernel: CIFS VFS: cifs_mount failed w/return code = -115 Thank for any help on shedding some light on it Alessandro