Error adding a computer to the domain

anshsky 0 Reputation points

Hi. We cannot add a computer from a remote office to the domain.lan domain. The remote machine has

DC is accessible from it via IP. The VPN is configured using two UDMs.

From remote machine

PS C:\Windows\system32> tracert
Tracing route to
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  unifi []
  2    31 ms    31 ms    32 ms
  3    32 ms    31 ms    32 ms
Trace complete.
Starting portqry.exe -n -e 53 -p UDP …
Querying target system called:
Attempting to resolve IP address to a name…
Failed to resolve IP address to name
UDP port 53 (domain service): LISTENING or FILTERED
Sending DNS query to UDP port 53…
UDP port 53 is LISTENING
portqry.exe -n -e 53 -p UDP exits with return code 0x00000000.
PS C:\Windows\system32> test-netconnection -port 53
ComputerName :
RemoteAddress :
RemotePort : 53
InterfaceAlias : 
EthernetSourceAddress :
TcpTestSucceeded : True

PING over IP works, but not through the host name or domain name domain.lan:

PS C:\Windows\system32>ping domain.lan
Ping request could not find host domain.lan. Please check the name and try again.
PS C:\Windows\system32> nslookup domain.lan
Server: UnKnown

*** UnKnown can't find domain.lan: Non-existent domain

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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