In FSTAB:
//192.168.188.52/media /home/shareuser/shared/ cifs vers=3.0,credentials=/home/shareuser/.smbcred,uid=1000,gid=1000,iocharset=utf8 0 0
In .smbcred are the credentials. The content of the file:
username=shareuser
password=shicjwvfiak domain=192.168.188.52
Should work.
Instead of the IP put the FQDN of your Share holding Server and make sure DNS is properly working.