I’m trying to setup a test domain at home to learn more about active directory. I have a vm setup win server 2019 and followed many guides on how to add a domain controller. Everything seems to be setup correctly, however when I try to add a Pc to a domain I get the following error. Any help would be appreciated The domain name "hometest" might be a NetBIOS domain name. If this is the case, verify that the domain name is properly registered with WINS. If you are certain that the name is not a NetBIOS domain name, then the following information can help you troubleshoot your DNS configuration. The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "hometest": The error was: "DNS server failure." (error code 0x0000232A RCODE_SERVER_FAILURE) The query was for the SRV record for _ldap._tcp.dc._msdcs.hometest Common causes of this error include the following: - The DNS servers used by this computer contain incorrect root hints. This computer is configured to use DNS servers with the following IP addresses: 192.168.25.1 - One or more of the following zones contains incorrect delegation: hometest . (the root zone)