Re: File Server Sharing SMB1: W10 Update KB5001330 shuts off SMB1

SMB1 is very slow, very insecure, and deprecated since 2014. They removed it from servers in 2017 IIRC.

What do any experts on SMB protocol say/recommend for this situation?

In general, don't worry about it IMO. Every 5-10 years or so MS will update something in SMB and break it for applications like VFP and Access. The last of these flaps was in 2018, whereby updates were not getting written straight away in VFP, and the database file was getting corrupted in Access. At the time affected customers had to set one or all of FileInfoCacheLifetime, FileNotFoundCacheLifetime and DirectoryCacheLifetime to zero on problem workstations. MS seem to have fixed the problem in subsequent releases of Windows 10.