Even though SMB1 is ‘installed’
on your server you need to enable it via powershell and the registry. Once done, restart
server service and you are good to go.
Some of the misleading errors are: "Windows cannot find", or Windows error 67
Install SMB 1
Get-SmbServerConfiguration
Set-SmbServerConfiguration -EnableSMB2Protocol $true
HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\SMB1 = 1
https://support.microsoft.com/en-au/help/2696547/how-to-detect-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-and