
In the NIC configuration, under Internet Protocol Version 4 (TCP/IPv4) properties, click advanced, and under the DNS tab insert the corporate internal DNS suffix, such as CompanyDomain.local in the box entitled “DNS suffix for this connection”. Do not add an alternate external DNS server such as an ISP or router as these will often respond first and name resolution will fail. Configure the connecting PC’s network adapter either statically or through DHCP to point ONLY to the domain controller at the corporate office for DNS. On occasion Bluetooth adapters will also conflict, so I recommend disabling them as well. If any others exist such as a wireless card, disable until domain joined. Only 1 network adapter can be enabled on the PC joining the domain, and preferably a wired connection. Joining the domain using a site-to-site VPN The primary problem encountered when joining the domain is DNS, but this is easily dealt with. Though a site-to-site VPN is by far the easiest way to join, it can be done using a Windows VPN client, which will be discussed further on in this article. Most often this would be in a situation such as a satellite office which is part of a larger corporate network and there is a site-to-site VPN in place.
There may be occasions where you need to join an off-site computer to an existing domain at a remote office.