Cannot ping domain controller Not much knowledge was transferred from the last Sysadmin. " Running Windows Server 2012 R2 all on servers and DCs Jan 15, 2018 · Domain controllers registered in DNS are not connected to the network or are not running. local is available and pingable. The system boot-up time has significantly increased. The tunnel works fine and I can ping literally any other IP address at the main site except for the DC. com, also I can ping from child. Join the client to DC again. The message says it identified domain controllers but could not contact them: The following domain controllers were identified by query however no domain controllers could be contacted A or AAAA records that map the names of the domain controllers to their IP addr are missing or contain incorrect Mar 29, 2020 · I have an issue where I can’t join the network domain through a VPN tunnel. Main problem is I can't access the Active Directory from my primary domain control for the Child domain. 10 and dc01. This leads to most of the shared folders becoming inaccessible, and the Exchange server also becomes unresponsive. Both IP address and name fail for pinging or browsing shared folders. Both dcs can be pinged from the host machine of hyper-v pdc. I am able to ping from a child server to each DC and then to the boarder firewall’s internal IP address Apr 23, 2019 · I can't ping any domain names, but I can normally ping IPs. 76, however I cannot ping the domain name. e corp. When you start the tool, specify the domain controller fully qualified domain name (FQDN), and query the Domains and Trusts set of services as follows: I'm in a fairly new position as a Sysadmin. 8. We are unable to join our PCs on the domain at this point and can’t contact the domain with the period either on join. Check which site your client belongs to. Randomly, some of our computers (mostly laptops) will lose their DNS functionality. x/24 and their domain is remote. The output of nslookup abc. NB: Computers are running MS Windows 7 I have tried firewall settings on advanced settings but not working with me. From my local Desktop I have to open a VPN application, and sign in using domain\\user and password1 to create a secure connection to my office network (this authenticates against our on-prem DC via NPS) . com, where; DC01 – Name of domain controller. UPDATE 2 : Oct 27, 2015 · All servers can ping to domain controllers and they get responded back. 65. If not one or more of the following dependent services are disabled: DNS Client Dec 1, 2022 · I can ping both domain controllers no problem. Preface: Site 1 = Established domain in another city. x subnet from S02 by name, but IP addresses work. I noticed that as of late I am unable to to ping certain computers on my domain. Computers at S1 can ping DC from within as well, so nothing wrong there either. local Host(A) 10. local) I receive Ping request could not find host server1. Jun 8, 2011 · The domain controller with the Operations Master token for the PDC emulator (does not work) Any available DC (Does not work) Any available DC running server 2003 or later (does not work) This domain controller: server1. 1. S. I cannot ping the Client PC. local. nltest comes back with 1355 0x54b ERROR_NO_SUCH_DOMAIN. 0. As mentioned, I can ping everything in S1 from S2 (via IP address), except the DC. As far as I can tell, nothing has changed on the domain controller. XYZ. Makes not sense as I can ping the server name and ping the IP address. ping client from server → can’t reach. I phone the user. I set the reverse lookup zone. If IPv6 is not configured correctly it will also cause problems. com It can ping internal hosts using their IP address It can ping the local Domain Controller/DNS I CANNOT ping via, IP address, the new domain controller on the same IP address. I’m confused because I can ping the DC server when I connect to the VPN and can do everything else that the VPN allows me to do except join a domain. domain. internal XYZ-domain Read-only No " Make sure "domain" is in the client's DNS suffix list. After the client establishes a communications path to the domain controller, it can establish the logon and authentication credentials. Any help to sort the problem out. What could be causing this? Aug 31, 2011 · The remote location’s subnet is 192. I cannot have functioning VPN connected up for some reason. I can ping it if I make the IP address on the replacement a net new IP, same subnet. com to child. I checked my DNS config again and again. Both zones and associated servers are each listed in the others servers DNS record. Open the Command Prompt on the Device Controller (DC). I notice I can’t access the target PC’s administrative shares so I ping it. 0/24] Each domain has a separate AD domain controller and DNS server. 19. child. Aug 8, 2012 · After about 20 minutes, \\server. Domain. But I cannot ping them over the network from other domain computers. UPDATE : DHCP is in the routeur and not in the server. 168. I already talked to sonicwall support to confirm with them that it wasn't a firewall issue. I have over 20 computers on my domain (lets call it “TestDomain. 8) for domain-joined devices, as they cannot resolve internal domain names. com”). The domains are NOT set to trust each other. They can't change ad password. Oct 1, 2013 · Can you tell me why i am unable to ping, but successfully able to resolve through nslookup command and also able to ping with DC server ip address. May 26, 2020 · I take a work laptop home. Example: dc01. I used nslookup and found the pc but I cannot pink it. If you're only using DNS resolution in your network (i. Subnet is 192. com" that I get "unknown host". DHCP/Authentication is Domain controller Site 2 = New site (should be Issue: I cannot ping the other computer via a fully qualified DNS domain name. I have: domain controller as DNS server ; forward lookup zone for the domain with host record for 192. com Computers: ComputerA, ComputerB Fully Qualified Names: ComputerA. 244. I do not have a static IP set on the network adapter that is allowing the talking from VM to VM, but I will double check that. Now, I am having a problem: I can’t ping or connect to S01 from S02, and vice versa. 2 (or x. com’s primary domain controller (which its hostname is rmdc Nov 5, 2020 · Move the closest domain controller on active directory site ; Create a subnet for each remote physical site and assign it to the active directory site where there is the closest domain controller ; Once you complete those steps, the client will find the closest domain controller based on active directory topology via dclocator process. It's only when I ping the server's fully-qualified domain name "server01. 1. 50 and secondary to my ISP; I can ping Jul 27, 2024 · Fix: The system cannot contact a domain controller in Windows 11 Method 1: Ping the Hostname and DC (Domain Controller) from the Client Device. I also can’t ping devices on the 192. If this is the case I'd turn off the router's IPv6 DHCP function. As it stands now, I can ping the Domain Controller, I can remote into the Domain Controller and I have remoted into the Domain Controller and made sure that DNS is running. May 7, 2021 · Update, totally started from scratch as the server is not in production as yet and still cannot ping domain by name. ( Please see the print-screen ) I am successfully able to nslookup & ping my DC server ip address ( Please see the print-screen ) I am also attaching print-screen of IP configuration. After that ping attempts to the servers failed, until I added the servers into the hosts and lmhosts files. A domain trust has been configured and working properly. Apr 21, 2022 · If you can't read the file then that's a red flag. local [10. Maybe the problem comes from my router ? I’m getting lost and if you have an idea I’ll gladly hear it. local Client is VT-EDD-IIS1 (I'll have others, but once this is fixed I'll have this solved) Not sure if I even NEEDED to, but I added the IP for the DC and domain to the client's host file, and now I can ping the server. Does it work if you ping some other server's FQDN (DNS name)? You can also use following command to resolve this problem. It said that it cant contact the domain controller, however it can ping to the domain controller successfully either by ip or domain name. I setup my Windows Server and promoted it to my Domain Controller. I'm at a loss here. Aug 10, 2021 · Domain controller and members must use the static ip address of domain controller for DNS and no others such as router or public DNS . The solution involves checking DNS settings, replication status, FSMO roles, and firewall configuration. The interesting part is that the servers are still receiving data from the outside (due to public IP NATs at the firewall). 2" and Apr 20, 2020 · Domain Controller (DC) & DNS server: Windows Server 2016 Client: Windows 10. Oct 1, 2013 · Hi All, Domain Controller - Windows Server 2008 R2 Standard Client OS - Window Server 2003 ( Terminal Server ) I am unable to ping my Active Directory Domain Name i. DC and DNS server are integrated in one device and it has an internal IP. I run into an issue when adding the domain controller at Location 2 to join t… Feb 14, 2022 · DC is VT-EDD-Server Domain is VT-EDD. xxx. I am able to ping and access files from the Primary DC to the Child DC. Thanks Regards Paul The only problem, I cannot seem to ping my DC/DNS/DHCP from any machine at S2. it always returns unreachable. Check Network Connectivity. e. com LAN and attempting to join a computer to the remote. If you can read the file, that's positive but doesn't rule out that it may not exist on all domain controllers. I check with them, the machine is on and they’re not having any network browsing problem. com running Static IP. What determines which domain controller responds when I ping our internal domain name? It seems when I ping from one computer I get a response from one domain controller and when I ping from another computer I get a response from a different domain controller. Can you tell me why i am unable Sep 25, 2019 · Expand the currently used one, which should be Domain but it may not. Nov 6, 2013 · The domain controller is running on Hyper-V. Domain: myoffice. parent. An SSL-VPN is used to connect the client with the DC. The active directory domain controller/dns server (same box) is on the 192. I am able to ping remote. Solution: May 23, 2021 · Delete the computer in the Domain controller and make sure no record was left behind in the DNS forward lookup zone. com to parent Dec 1, 2022 · I can ping both domain controllers no problem. A or AAAA records that map the names of the domain controllers to their IP addr are missing or contain incorrect Mar 8, 2021 · Hi all, I'm needing some help with troubleshooting a situation where the workstations at a new site cannot find the domain controller. However, when I connect to the Hyper-V console and check the VM, I see that the Ethernet connection is May 1, 2018 · They are on the same network (DC1 is x. server2. Jul 27, 2022 · If the correct DNS servers are not entered here, you now have to find out where the computer gets this configuration from. Probably DNS service on that DC. Jan 20, 2018 · You have a domain controller in your network, and the PC/servers joined to that domain are not reachable by "ping", however, is possible to run Remote Desktop and connect remotely to the PC/server. I have a Child domain child. Because of this, I cannot join computers to the domain, nor authenticate new users from S2. It then attempts to find an optimal domain controller in the same site as the client. Check each hop of your networking. Jun 8, 2022 · Hello I have a question that I cannot find answers to when searching Google. When this occurs, I am unable to ping the domain controller (also our DNS server) by its IP address from the computer. Also did nslookup on the DC and everything came back normal. If they cannot ping by name, but can ping by IP address, you have probably have a DNS When I ping the server's IP address, I get a response. Cannot join domain despite able to ping to domain to domain controller Nov 7, 2014 · I have a Windows 7 computer on my domain that is behaving oddly. If this detection successful, it will get the domain firewall profile (allowing for correct ports and IPv4 ICMP ping) and we cannot change the network location profile. This PowerShell command will provide the site the client belongs to as well as the domain controllers it considers relevant to that site. Jan 17, 2014 · Yet, it can ping the server. 0/24. com (Win serv 2022) → A server located in child domain serv. So if we ping ‘domain. 0/24] and school. I log into a local Windows 10 session on the laptop with domain\\user and password1. 51) joined to this domain. Transversely, I am unable to ping the computer by its IP address from the domain controller. Have you tried using FQDN or IP of domain controller to do your ping? A computer not on domain is not going to be able to resolve name. x. Oct 25, 2024 · If the domain controller isn't in the optimal site, the client flushes the cache after 15 minutes and discards the cache entry. When I ping from a server to another server, I get following message "Destination host unreachable. As soon as I change it back to the same one, pings stop, etc. 2) net start dnscache. com – Name of your domain === or === ping 192. Also I can see the server in the network. And vice versa as well with no issue. If it is not, click it then click Save Changes. 4) and they can ping other things in the network including the default gateway and other things can ping them but whenever they try to ping each other it says “Reply from x. Of course I can ping the FQDN internally on the Domain controller but not the host server. I have a HyperV Server hosting a Domain Controller VM (192. First, we need to ping the domain controller from the affected device to test whether it’s working. no WINS), then the client needs to know how to fully qualify hostnames. Can people in the office ping the DC by IP address, and by name? If yes, the issue is in the network path between your remote location and the server. I was able to ping several servers and clients successfully, until I flushed the DNS cache. I have two Windows Server 2016 domain controllers one of them (pdc) is a virtual machine (hyper-v) the other a physical machine. I’ve researched and Apr 6, 2017 · Randomly we have had two domain controllers experience a “No Internet Access” issue, ultimately causing all child servers to not be able to reach the internet. 51; Windows client has primary DNS server set to 192. It is possible to ping www. Nov 7, 2017 · I am trying to connect a Windows 7 client to a Domain, the Domain was created on Windows 2012 Server (Core Version) and is fully working on that. school. Dec 20, 2016 · Hi Team, I have three domain computers connected to my LAN, all the computers receive the IP Addresses in my defined range 10. Kinda of stumped May 26, 2010 · I’ve got two different Active Directory domains: office. Nov 27, 2024 · Pro Tip: Avoid using public DNS servers (like Google’s 8. Nov 28, 2016 · If you can ping with the full name “host. 100 (IP of domain Sep 20, 2016 · So I ran dcpromo, and successfully converted S02 to a domain controller. 50) and another VM (192. Jul 30, 2007 · WINS has the 4 entries needed for resolution: Domain Master Browser, Workgroup, Domain Controller, and Normal Group Name. Test the connection to the domain controller using the ping command: Oct 3, 2023 · Hello, So I wanted to emulate a specific github repository, and that involved running a Windows Server 2019 VM, along with a Windows VM in qemu both on the same isolated network (I don’t think this information changes anything but I wanted to be as clear as possible in case this does indeed come into play). When I ping just "server01", I get a response. Win10 Enterprise, can ping the domain hostname: SVR-DC domain: eventsrus. com” but not with “host” that is a function of your “Connection-specific DNS suffix” as configured in your TCP/IP IPV4 config or your DHCP scope. I also set up an A-record, which neither computer can ping. com and ComputerB. com, but the IP address Feb 15, 2018 · I have a primary domain XXX. I've also made sure that there . Each computer can ping itself using the computer name or its fully qualified name. contoso. myoffice. SERVER-01 also has an IPv6 address, possibly from router's DHCP server. 1) net stop dnscache. Device Controller. In Active Directory Sites and Services I have both DCs under one group. google. abc. 2. When pinging using using FQDN (server1. com (Win serv 2016) → those 2 domains are on different subnets The problem is I can’t ping from parent. We are trying to get a DC setup at Location 2 joining the domain of Location 1. Somehow they have stopped seeing each other and neither can ping each other (request times out). Is there any way we can troubleshoot this? Oct 22, 2014 · Greetings, We have been having a strange issue with our DNS for about a week now. 10 So Apr 26, 2023 · Dear Spicework experts, We have a domain controller virtual machine WS2012R2 (VM) running on Hyper-V, and sometimes it stops accepting incoming connections, such as pings. They can ping the server. 2 and DC2 is x. 50 and 192. 10. ’ we get a return on the ip address but if we ping our domain as we normally would we get ping request couldn’t find the domain. example. Ensure that the radio button for Turn on network discovery is enabled. ***Important- go back and check to see if it is still enabled. - My real domain name is (obviously) not example. office. Brand new install and DC and still Jan 20, 2025 · We can’t ping our ‘domain’ without a period. 0 subnet. The message says it identified domain controllers but could not contact them: The following domain controllers were identified by query however no domain controllers could be contacted. I can ping the server's ip 172. com. Sep 17, 2018 · If you can ping, then communication is working correctly. Does anyone know what the heck could be happening? P. Here’s what’s happened: I remote into the DC. the dns entry for adc and bdc were also present on the DNS. Even if the IPv4 settings are OK, the domain cannot be found if the IPv6 setting for the DNS server is invalid because Windows prioritizes IPv6 by default. Oct 11, 2018 · It doesn't work quite like that. My internet is working, but somewhat slower than normally. May 15, 2023 · An Active Directory Domain Controller (AD DC) for the domain could not be contacted” is encountered when a new workstation or server is tried to join in Go Up Share Insights and Connect with Peers in The Netwrix Community If a packet capture reveals that branch computers are using a domain controller in another site, it may be due to it is common to configure domain controllers in spoke sites (branch offices) to use DNS mnemonics, that instructs a domain controller which DNS records to avoid registering. local DNS should be domain controller otherwise it won't connect Both are connected via IPsec vpn tunnel. You should not only check the configuration of IPv4 but also of IPv6. Use the PortQryUI tool to probe for availability of important domain controller services. local is unavailable and not pingable, but \\domain. com (Win serv 2022) → child domain with 1 DC: child. I have a peculiar issue. com domain. Jun 7, 2023 · Hi, I have this lab: → Parent domain managed by 2 domain controllers: parent. internal XYZ-domain Read-only No. I am physically connected to the contoso. Try: ping DC01. It appears that the now acting domain controller simply refuses to allow communication with the new DC with the same IP. I am able to ping the VM that is acting as the domain controller, the 2019 Server, from the 2012 R2 Server. The VPN is working flawlessly on my girlfriend's Manjaro box as well as on my OpenBSD system. Jul 27, 2022 · Windows Server 2016 standard domain. I don’t have Dec 6, 2018 · ping FQDN from client → can’t find host replace PTR on DNS and restart service. To answer your question about shares, NETLOGON, SYSVOL, and $ADMIN are available on whichever one I can connect to. If not next step. When NLA starts to detect the network location, the machine will contact the domain controller via port 389. Restart DC. It states “the active directory domain controller could not be contacted” when I try. In regards to the previous post, I am trying to ping the domain name Oct 7, 2019 · We have a domain (Location 1) and another domain (Location 2). Aug 3, 2023 · The Domain Controller and the Host connected to the Domain both have picked up the Domain profile, however since the other Host and VM are not connected to the domain (because they are unable to contact it) they are still just on a private profile. 2. com running DHCP. I have also updated the client's DNS to: and when I still try to join the domain I get Mar 18, 2025 · Ping the IP address, the server name, and the domain name. Nov 19, 2015 · We received an error that it could not find a DC and it failed to join the domain. Jan 6, 2024 · I've manually set IPs all on the same subnet for all my computers and also set the first entry in the DNS fields to be my Domain Controller. com is May 28, 2016 · Hey I need your help, I have tired researching but I have not found anything yet. Mar 29, 2020 · When your users report that they see “an active directory domain controller for the domain could not be contacted” there could be a few different causes for this issue. From the Win 7 Client, I can Ping "10. Mar 24, 2023 · A user asks why they cannot ping their domain name but can ping their server name, and gets help from other users and experts. 4): Destination Host Unreachable” The firewall is off and I feel as though I have tried everything. When pinging the Netbios name from host the DNS resolves and ping is successful. I also can only ping by IP address but not the FQDN. My local desktop now has access to mapped drives to on-prem servers and I can Probably a DNS issue. Here's my problem: Users can connect to our VPN and access network resources, but nothing related to domain controllers works. fbex zoumjj lprlzx chghsk kqwsuy daq ujeht onwvygb krgkyg whbsd ryhgj atd jyqjn ajawr kvzkl