Disable SMBV1 on Windows server 2012/2016

 Server side:

Get smbv1 status
get-SmbServerConfiguration
Get-WindowsFeature | Where-Object {$_.name -eq "FS-SMB1"} | ft Name,Installstate

Active audit
Set-SmbServerConfiguration –AuditSmb1Access $true
Applications and Services -> Microsoft -> Windows -> SMBServer -> Audit and see if any clients accessed the file server over SMB1.

Remove SMB1
disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol -Remove

Disable SMB1
set-SmbServerConfiguration -EnableSMB1Protocol $False -Force

Enable SMB1
set-SmbServerConfiguration -EnableSMB1Protocol $True -Force


Client side
Test w10
Dism /online /Get-Features /format:table | find "SMB1Protocol"