I was doing some performance testing of my migrated Solaris 11 share from windows and it would never finish, always terminating at some point with windows popping up a dialog that said specified network share is no longer available. On the Solaris box, this was showing up in the /var/adm/messages log:
smbsrv: [ID 421734 kern.notice] NOTICE: [domain\USER]: shared SHARE NOT found
Thankfully it didn’t take me too much searching to find satcat66’s post about the same topic. In my case, my old server was offline, but I had created a DNS A record to point the old name to the new server in case I forgot to update a reference to the share somewhere. Once I removed the alias, the performance test completes without error.