Due to critical vulnerabilities in Windows SMB (file sharing) services, the
campus Information Security & Policy (ISP) group advises
disabling of SMBv1 on all campus Windows systems, and that you prepare to update
all Windows systems quickly on Patch Tuesday (Feb 14) to patch more
recent versions of SMB (SMBv2 and SMBv3).

Please see our FAQ page for some details on disabling SMBv1.