This boolean parameter controls whether smbd 8 will trigger smb2 oplock break notification retries when using yes. The [MS-SMB2] specification documents that a server should send smb2 oplock break notification retries on all available channel to the given client. But Windows Server versions (at least up to 2019) do not send smb2 oplock break notification retries on channel failures. That means they do not implement the behavior specified in [MS-SMB2]. By default Samba behaves according to the specification and send smb2 oplock break notification retries. Warning: Only enable this option if existing clients can't handle possible retries and it turns out that the Windows Server behavior is required. Note: it's likely that this option gets removed again if future Windows versions change their behavior. Note: this only applies to oplocks and not SMB2 leases. server multi channel support no yes