I can’t add a PC to the domain via VPN, although I can access the DC by the domain name. Why?

Question

VPN

Hello!
On Windows 2012 Server, I configured VPN with a built-in mechanism. Connected to the server. Launched a ping to the domain controller by IP, the ping goes. Launched a ping to it on a domain name, a ping goes. I tried to go to the network folders lying on the domain controller, it comes both by IP and by domain name. I began to connect the computer to the domain, entered a name, clicked OK, a window appeared with a username and password with the right to add a PC to the domain. Entered. The PC thought for a minute or two and issued a window that it could not find the specified domain. Registered DNS of the domain controller on all network interfaces. The result is negative. Why is this happening, can anyone suggest?

Answer 1

Check out this article, it might help: https://blog.lan-tech.ca/2012/07/25/how-to-join-a-...