This boolean parameter controls whether smbd 8 will disable lock sequence checking even for multi-channel connections as well as durable handles. The [MS-SMB2] specification (under 3.3.5.14 Receiving an SMB2 LOCK Request) documents that a server should do lock sequence if Open.IsResilient or Open.IsDurable or Open.IsPersistent is TRUE or if Connection.Dialect belongs to the SMB 3.x dialect family and Connection.ServerCapabilities includes SMB2_GLOBAL_CAP_MULTI_CHANNEL. But Windows Server (at least up to v2004) only does these checks for the Open.IsResilient and Open.IsPersistent. That means they do not implement the behavior specified in [MS-SMB2]. By default Samba behaves according to the specification and implements lock sequence checking when multi-channel is used. Warning: Only enable this option if existing clients can't handle lock sequence checking for handles without Open.IsResilient and Open.IsPersistent. And it turns out that the Windows Server behavior is required. Note: it's likely that this option will be removed again if future Windows versions change their behavior. Note: Samba does not implement Open.IsResilient and Open.IsPersistent yet. server multi channel support no yes