smbv1: https://pc.poradna.net/?search=smbv1&replies
https://support.microsoft.com/cs-cz/help/2696547/how-to-detect-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-and
https://support.microsoft.com/cs-cz/help/4034314/smbv1-is-not-installed-by-default-in-windows
https://blogs.technet.microsoft.com/filecab/2016/09/16/stop-using-smb1/