Sending files from win10 to SMBv1 server? [closed]

Solution 1:

One possibility could be, as @Leshy mentioned, to skip Windows' file sharing protocol completely, although I would complement his answer with a strong recommendation to ensure you use one of the encrypted SFTP or FTP/S protocols rather than plain old FTP. If security is a concern you will not want to be sending logon credentials and files in plain-text over the network.

Another potential solution could be to set up a more protected relay server ("R") between A and B, which could be configured with the regular SMBv3 server protocol but still have the SMBv1 client installed. Have the user copy files from A to R, and then run a script invoking robocopy or xcopy to copy from R to B, for example.