Server Message Block - Wikipedia
https://en.wikipedia.org/wiki/Server_Message_BlockServer Message Block provides file sharing, network browsing, printing, and inter-process communication (IPC) over a network. The SMB protocol relies on lower-level protocols for transport. The Microsoft SMB protocol was often used with NetBIOS over TCP/IP (NBT) over UDP, using port numbers137 and 138, and TCP port numbers 137 and 139. NBT for use by NetBIOS is supporte…
How to enable/disable SMBv1 in Windows 10
social.technet.microsoft.com › Forums › en-USSep 30, 2016 · If your NAS device only supports SMB 1.0, we could try to disable SMB 2.0 and SMB3.0 to force the Windows 10 machine to use SMB 1.0 to access the share by running the following command line. Disable SMB2.0 and SMB 3.0. sc.exe config lanmanworkstation depend= bowser/mrxsmb10/nsi. sc.exe config mrxsmb20 start= disabled. Here is a link for reference: