A domain controller is a server in a Microsoft Active Directory or NT4 domain that is responsible for central authentication.

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Is a static IP on the client required to join a domain controller

I have this problem with joining client PCs to the domain. I think i did everything right, set up AD DS, DHCP, DNS on my server, turned off the DHCP server on my router. I ensured that the Preferred ...
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2k views

How do I Clear a Warning about Best Practices for Running a Domain Controller on a Virtual Machine?

I have a Windows Server 2008 Domain Controller running on a VMware virtual machine. There is a Best Practices Analyzer warning appearing in Server Manager with the following message: "The domain ...
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1answer
19 views

Windows Server 2008 R2 functional level - DSQUERY

After executing some queries (dsquery computer domainroot -stalepwd), using dsquery, I was told this command connects to the available DC and for this reason the results might be untruthful because ...
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1answer
26 views

AD Replication with 3 sites/locations

I have created new forest with domain.local. Domain have 3 locations - A, B, C. ( One dc per location ) First dc-A is owner all FSMO roles. After configure all 3 sites with subnets added 3 IP "Inter ...
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1answer
41 views

Cannot promote Windows Server 2012 R2 to Domain Controller at a new site. “The wizard cannot gain access to the list of domains in the forest.”

I'm opening a new site (physical and logical) in my international Windows domain. The site is connected to the main office by a VPN over a slow connection (I'm using pfsense as my main router and ...
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19 views

Show domain user on login screen

I've a domain used by both teachers and students. Right now teachers can able to input username and password easily but for the students its quite difficult for them to do the task. I've created two ...
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1answer
13 views

VM User Login data - How can I monitor user login data from DC?

I would like to generate report or send email when someone logs in to any of Virtual Machine's under the Domain Controller server. How can I do it? Some where I read that we should Use WMI/ADSI to ...
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2answers
8k views

ActiveDirectory domain service wizard: Prerequisites check for domain controller upgrade fails

I want to test my software's SSO, so I am trying to configure ActiveDirectory on Windows Server 2012, following this tutorial. At "prerequisites step", the window is supposed to look like: but ...
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1answer
2k views

Linux Client Active Directory Authentication stops working when failover

I have an issue with Linux clients trying to AD authentication by targeting a DNS name (corp.example.com). I have 2 Domain Controller servers DC1(10.0.0.3/24), DC2(10.1.0.3/24) both domain controllers ...
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43 views

Unable to change domain credentials on Windows client PCs

Any time a user's password expires, or they want to change the password before it does, they will see the following error message: configuration could not be read from the domain controller either ...
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4answers
10k views

Two Different Domains & Domain Controllers on Single Network

I'm attempting to determine whether it is possible to have two Active Directory domain controllers running on the same network, within the same subnet, with two separate domains. I do not want these ...
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2answers
68 views

Need to start over with a new Active Directory domain. How far do I tear down the DC?

I built a Windows Server 2012 R2 PDC for a new domain. It's still in its infancy with only one DC and one member computer. Now I need to remove all traces of that domain and start fresh because: It ...
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2answers
8k views

How can I change dns name on domain controller?

I am in the process of trying to clean up after a domain rename gone bad. The rename was from xxx.com to hq.xxx.com My current problem is that I cannot login to the DC (only DC on network) Logging ...
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50 views

Can't open Active Directory Users and Computers, although AD is operational

This is the error I'm getting when trying to open Active Directory and Computers on the Domain Controller: Naming information cannot be located because: The network path was not found. The NETLOGON ...
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1answer
10k views

Why gpupdate fails?

So I have a Windows Active Directory Domain with two domain controllers, DC1 and DC2, both running Windows Server 2008 R2. DC1 is the primary DC holding all FSMO roles. It was functioning all right as ...
2
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1answer
2k views

Read Only Domain Controller not replicating after writable domain controller outage

I have a RO domain controller that replicates with a writable DC which is at another site. The other week the writable DC was out for about 2 days because of maintenance at that site. After this ...
2
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1answer
178 views

Which server should be the Exchange 2013 DAG Witness Server?

Imagine a standard setup with an Active Directory Server, 4 Exchange servers ( 2 with CAS roles, and two with Mailbox roles) with load balancing and failover. This site talking about how putting the ...
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1answer
26 views

Migrating PKI and CA of a Domain Controller that needs to be demoted

I have a Domain Controller that for some reason beyond me has ADCS installed on it. The domain controller is a 2008 R2 server and needs to be demoted, but first I need to do one of two things. This ...
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4answers
39k views

Hyper-V Time Sync for VM Domain Controller

We have 2 physical hyper-V servers running 8 VMs between them, each physical server has a Domain controller on it running in a VM and all servers are 2008R2 The VM PDC is set to NTP and to sync with ...
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1answer
43 views

Active directory user sessions are not appearing under the “Collections/Connections” in Remote Desktop Services

I am currently using Windows Server 2012 r2 and I am trying to setup RDP shadow services on my services to be able to remotely connect to current user sessions who are on the domain, I set up all the ...
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1answer
37 views

Domain for Multiple Companies

Hope all is well with everyone. We would like to inquire the best practice on creating domains for multiple companies under one Parent company as we are a group of companies. From our research we ...
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1answer
1k views

Set up trust between Azure AD and local AD

We are moving some VM's and Cloud Services into Azure, but we need those services to still connect back to the AD of our partner. I'm a developer, not a sysadmin, so I'm not sure how to do this, or if ...
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2answers
62 views

Which Ports need to be accessible on a Domain Controller for Clients to logon?

We are currently segmenting our network. We will move the servers in another subnet than the clients. Of course the clients still need access to the domain controller to authenticate against it. I ...
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1answer
1k views

DNS name server IP keeps reverting back to unknown for forward lookup zone

I'll start by saying I have not worked much with DNS and DC's. I'm a programmer who is trying to build out an environment with a domain to simulate a production scenario. My issue is the forward ...
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2answers
45 views

Keep the same IP and host name for new domain controller as crashed one

Because of some disaster I have lost my primary domain controller and thanks god that I had secondary domain controller so I could provide the service to the computer and save my data. After that I ...
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2k views

Active Directory Domain Service started then stopped after dcpromo

I use Windows Server 2008 to install Active Directory follow this guide After a restart, I can only login to local account,not domain account due to the error No logon server are available! I check ...
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2answers
10k views

Permissions for Scheduled Tasks on a Domain Controller

I'm trying to run a Scheduled Task on a 2008 R2 Domain Controller and all was well until I set it into the production environment. I'm running the task as a Domain User that's defined in the "Log on ...
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3answers
15k views

How to temporarily stop time syncing with domain controller?

I wish to do some testing on my local machine which requires me to put the date forward a year. So I can test some stuff in SQL Server (i've found it not possible to override the sql server time). ...
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9 views

Windows 10 Connect to Disconnected user session without password as Domain Admin

I have a Windows 10 PC (Virtual Machine) on a domain and a domain user logged in to it (albeit disconnected). This user has started some applications that have caused a massive consumption of network ...
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1answer
59 views

Seizing a domain from dead primary domain controller

My old Primary Domain Controller died after a series of power problems. I tried to follow this set of instructions http://kpytko.pl/active-directory-domain-services/seizing-fsmo-roles/ to get another ...
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3answers
3k views

Windows server 2012R2 as additional domain controller along with Server 2008R2 fails

On running ADPrep passes all prerequisite, but fails in the last stage with the below error: ADPrep execution failed --> System.ComponentModel.Win32Exception (0x80004005): A device attached to ...
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26 views

Connect Access Domain Controller Over VPN

We have a remote base which we would like to connect to our main office. We bought a VPN capable router thinking this would dial the vpn and our remote PC would connect seamlessly. Unfortunately ...
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1answer
25 views

Exchenge 2010 server is not finding GC server in the domain

Exchenge 2010 server is not finding GC server in the domain even the domain controler . All Domain controllers are Windows Server 2012 Std. In the atest.local forest I have 3 DC and all 3 are GC: PS ...
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49 views

DC3 doesn't replicate with newly added DC1

[DC 1 - LOTUS] [DC 2 - IRIS] [DC 3 - FLORA] The picture above shows my domain network connection. My original DC1 was PYRUS, due to some reasons, it is dead and be replaced by LOTUS. I Seize all ...
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1answer
104 views

WMI “Access Denied” to Read Only Domain Controller

From a management machine using wbemtest, we are able to successfully connect to a remote Read-Only Domain Controller that is running Windows Server 2012 R2 Datacenter with a user who is a member of ...
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1answer
92 views

Issues adding new DC to network after main DC broke down

What I try to do should be something simple but I made in ended up bad. We have a virtual network and virtual machine set up on Azure East Asia region datacenter originally. Then, we decided to move ...
8
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3answers
7k views

Server 2012 R2 Active Directory Domain SRV dns records suddenly disappeared

I have a test domain that I recently configured. All of a sudden, no users can log in except those with cached credentials. The domain includes two domain controllers that are both global catalogs ...
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21 views

A domain controller in Azure ends up public on the Internet with no firewall - is it compromised? [duplicate]

I'm helping a customer stand up an Azure environment and they decided to stand up a server (DC) on their own without asking for help. The only access method is supposed to be IPsec, but they forgot ...
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3answers
36 views

Reconnect to Domain Controller after temporary disconnect in Server 2012

I have 5 RDP Servers running Windows Server 2012. Our Domain Controller was temporarily taken off of the network for 5 minutes due to a bad switch. Even after it has been brought back online, when ...
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2answers
36 views

Targeted GPO deployments from Samba (4) DC

I've seem to be stuck. I come from a mostly POSIX background, & thrown into the deep-end on this one, so learning as I go along - so not sure if there's no solution, or if it's my own Dunning-...
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1answer
47 views

DC Replication over VPN Server 2012R2

I Have two sites right next to one another connected using Draytek routers an IPSEC secure vpn tunnel. One site had all the servers the other none. I installed a new DC on the main site them moved ...
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1answer
120 views

Inconsistent winbind info on Samba 4 AD domain controller

I've setup a Samba 4 AD domain controller on Debian Jessie (samba 4.2.10). Everything's working fine, except that winbind gives wrong user/group information. I have a sample user "testuser" and a ...
4
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2answers
8k views

Active directory member servers cannot locate domain controller

Several hours ago, a handful of our member servers became unable to authenticate against the two domain controllers they should be using. The member servers and DC are located in the same datacenter, ...
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2answers
235 views

smbclient: Connection to localhost failed (Error NT_STATUS_CONNECTION_REFUSED)

until yesterday I had a functioning Active Directory Primary Domain Controller running on a raspberry pi. Now it seems I cannot get the 'samba' service to listen at all. This is since performing an ...
4
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1answer
1k views

Windows Server 2003 DC migration to 2 x 2012 R2 DCs - DCDiag error = Advertising: SERVER IS NOT RESPONDING or IS NOT CONSIDERED SUITABLE

We are upgrading our single 2003 domain controller (DC1) to two 2012 R2 controllers (DC2 in Sevenoaks and DC3 in Manchester (different site in Sites and Services for Manchester)). DCpromo (the wizard ...
17
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1answer
23k views

What needs to be done after a Domain Controller crash?

Assuming that at least two domain controllers were present in the domain to start with, what steps need to be taken to make Active Directory healthy after a domain controller crash?
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1answer
23 views

Adding an IPv4-only Domain Controller to an existing pool of Domain Controllers with both IPv6 and IPv4

We have an existing pool of Windows 2008 R2 Domain Controllers on-premises. These Domain Controllers have IPv6 and IPv4 configured. Now we need to add another Domain Controller that will seat on an ...
2
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1answer
70 views

Guidelines and Best Practice: Prep to Temporarily Shutting Down an Active Directory Domain Controller

1 AD domain. 3 total Domain controllers, all on 2008 R2 The primary DC (with FSMO roles) is being moved to a new office and it will be offline for a maximum of 3 days. This DC also serves DNS but ...
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1answer
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How should I manage my cloud-hosted virtual networks/machines?

I am currently hosting multiple production projects in Microsoft Azure. Each project is configured with a separate virtual network with two Windows VMs to act as web servers, and one server to act as ...
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96 views

The schema master did not complete a replication cycle after the last reboot

I'm attempting to add a Windows Server 2012 Domain Controller to an Existing Windows Server 2003 network, and then following that, will migrate it to be the domain master. I'm following this tutorial ...