Hi everyone, I've recently migrated a file server/domain controller from a Windows 2012 Server to CentOS 7.2 with Samba 4.2.13 running on active directory role mode , everything is working fine except when handling Excel files, when you try to open a file it locks in read-only mode and there is no users accessing the file , anyway you can edit normally if you click on "Notify" option in Excel, i tried completely disable oplocks and file locking on smb.conf but it's still happens the same thing with any user in any Samba share on all client computers .I'm gonna post here my configuration if someone have any suggestion , ideas to help me address this issue i really appreciate. [global] workgroup = AM realm = AM.LOCAL netbios name = AM-PDC server string = AM-PDC os level = 255 server role = active directory domain controller dns forwarder = 172.16.1.1 syslog = 0 log level = 1 max log size = 4096 log file = /var/log/samba/log.%I debug class = yes debug prefix timestamp = yes strict locking = no oplocks = no level2 oplocks = no [netlogon] path = /var/lib/samba/sysvol/am.local/scripts read only = no browsable = no [sysvol] path = /var/lib/samba/sysvol read only = no browsable = no [Homedirs] vfs objects = acl_xattr store dos attributes = yes map acl inherit = yes browsable = no writable = yes path = /data/samba/homedirs [Juridico] vfs objects = full_audit,acl_xattr acl_xattr:ignore system acls = yes full_audit:prefix = "%I|%u|%P" full_audit:success = rmdir rename unlink full_audit:failure = rmdir rename unlink full_audit:facility = LOCAL0 full_audit:priority = NOTICE ea support = yes store dos attributes = yes map acl inherit = yes browsable = yes writable = yes path = /data/samba/juridico [TI] vfs objects = full_audit,acl_xattr acl_xattr:ignore system acls = yes full_audit:prefix = "%I|%u|%P" full_audit:success = rmdir rename unlink full_audit:failure = rmdir rename unlink full_audit:facility = LOCAL0 full_audit:priority = NOTICE ea support = yes store dos attributes = yes map acl inherit = yes browsable = yes writable = yes path = /data/samba/ti [Publico] vfs objects = full_audit,acl_xattr acl_xattr:ignore system acls = yes full_audit:prefix = "%I|%u|%P" full_audit:success = rmdir rename unlink full_audit:failure = rmdir rename unlink full_audit:facility = LOCAL0 full_audit:priority = NOTICE ea support = yes store dos attributes = yes map acl inherit = yes browsable = yes writable = yes path = /data/samba/publico [AMSYSTEM] vfs objects = full_audit,acl_xattr acl_xattr:ignore system acls = yes full_audit:prefix = "%I|%u|%P" full_audit:success = rmdir rename unlink full_audit:failure = rmdir rename unlink full_audit:facility = LOCAL0 full_audit:priority = NOTICE ea support = yes store dos attributes = yes map acl inherit = yes browsable = yes writable = yes path = /data/samba/amsystem [Atualizacao] vfs objects = full_audit,acl_xattr acl_xattr:ignore system acls = yes full_audit:prefix = "%I|%u|%P" full_audit:success = rmdir rename unlink full_audit:failure = rmdir rename unlink full_audit:facility = LOCAL0 full_audit:priority = NOTICE ea support = yes store dos attributes = yes map acl inherit = yes browsable = yes writable = yes path = /data/samba/atualizacao [SAMBA] path = /data/samba browsable = yes writable = yes valid users = administrator [ADMIN] path = /data/samba/teste browsable = no writable = yes