>I know there was a thread on MS discontinuing SMBv1, but it turned into a thread about SMB and Samba and I don't care about Samba.
>
>Anyway, I have one DBF on a network drive that our applications go to in order to read connection strings to our SQL Servers where the real data is stored. There is no writing to this DBF. So, many users are accessing this one DBF with a memo file and no CDX. The clients are XP, Windows 7 and 8.1 and maybe some Windows 10. I'm mostly concerned about the XPs.
>
>So, the question is: What happens if we disable SMBv1 to make our network safer from something like the Petya ransonware?

If I'm not mistaken, the XP workstations would lose access to the network shares that were hosted on systems where SMBv1 had been disabled. You might still be able to connect to SQL Server from the XP workstations.