For reasons of ransomware SMB v1 is still much discussed because most manufacturers continue to use SMB version 1. Equipment such as NAS, printers to computer applications will not support SMB v2 or 3 because it implies a large financial cost to manufacturers and some even close their eyes.
One of the examples I've had was with Hewlett-Packard (HP) Portugal that neither enterprise support assistance can not give explanations on the subject is always the customer fault because it uses Windows Server and its printers and others are only Windows XP up to 10, good move HP.
NedPyle from Microsoft has made a publication with the title "SMB1 Product Clearinghouse" in which it publishes a list of products requiring SMB v1 and is explicit in its documentation.
It is worth reading and knowing some of the products, you can consult the publication in https://blogs.technet.microsoft.com/filecab/2017/06/01/smb1-product-clearinghouse/
NedPyle from Microsoft has made a publication with the title "SMB1 Product Clearinghouse" in which it publishes a list of products requiring SMB v1 and is explicit in its documentation.
It is worth reading and knowing some of the products, you can consult the publication in https://blogs.technet.microsoft.com/filecab/2017/06/01/smb1-product-clearinghouse/
