Run these two commands from a client terminal
nltest /dsgetdc:sharewiz.net DC: \\DC.adminoffice.sharewiz.net Address: \\192.168.1.77 Dom Guid: 5f698a5-91c3-3b9c-82fe-9cef7535d6a Dom Name: adminoffice.sharewiz.net Forest Name: adminoffice.sharewiz.net Dc Site Name: Default-First-Site-Name Our Site Name: Default-First-Site-Name Flags: PDC GC DS LDAP KDC TIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS_FOREST CLOSE_SITE FULL_SECRET The command completed successfully
or
nslookup -type=srv _ldap._tcp.dc._msdcs.adminoffice.sharewiz.net Server: dc.adminoffice.sharewiz.net Address: 192.168.1.77 DNS request timed out. timeout was 2 seconds. _ldap._tcp.dc._msdcs.adminoffice.sharewiz.net SRV service location: priority = 0 weight = 100 port = 389 svr hostname = dc.adminoffice.sharewiz.net dc.adminoffice.sharewiz.net internet address = 192.168.1.77 I:\Office Data\ShareWiz Systems\Sales\Clients\Lost Prospects>