I believe this is due to one or more users having an empty string for a password. See this thread: SMB Authentication breaking after TrueNAS (FT) reboots - #2 by awalkerix.
I believe this is due to one or more users having an empty string for a password. See this thread: SMB Authentication breaking after TrueNAS (FT) reboots - #2 by awalkerix.