This article describes new features of the Server Message Block (SMB) 3.0 protocol. Applies to: Windows 8.1 - all editions, Windows Server 2012 R2 and later versions of Windows Original KB number: 2709568 Summary Windows Server introduces new server message block (SMB) file server features. To take advantage of these new features, the SMB client and SMB server must support SMB 3.0. The SMB 2.x