Questions tagged [domain-controller]

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

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What actually happens when a computer is deleted from Active Directory? [closed]

If I open AD and then delete a computer, what will happen to that computer? Will it physically get removed from the domain? What would happen if I tried to log into the computer after it had been ...
1 vote
5 answers
3k views

How to establish trust relationship when logging in with the old password and network disabled?

I have two computers in the same domain that I use, recently I changed the domain password on one of them. When I tried to login with the same account on the other machine I get: The trust ...
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How to recover users from ntds.dit

My primary (and single) DC died by mistake (not booting) however all the files are intact. What are my options to restore users on new DC on other server? died DC: Windows server 2008 R2
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1 answer
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Fax Server on a Domain Controller

So I have this Fax number attached to a modem inside a Windows 2012 R2 DC. I followed the steps on: https://technet.microsoft.com/en-us/library/jj134193.aspx to install and configure the Fax Service. ...
1 vote
2 answers
218 views

After a DC loads the DNS zone does it ever have to contact the DNS server again?

I have a DC in a branch office. The DC is pointed to another DNS server in a central office (which is also a DC) for its primary DNS. So let me make sure I understand how this works: When the DC ...
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1 answer
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Is there a way to manage machines which are off-domain centrally?

We have a number of three tier setups here which are mostly Windows Server 2008 boxes. They tend to consist of 1 web server, 1 application/web services server, 1 db server. As this is a three tier ...
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1 answer
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Upgrade Server 2012 Standard Evaluation member server to Standard

I've been running a Server 2012 Standard evaluation as a member server for a while - it has been a remote site AD server that connects to our existing Essentials domain ("PDC"). The server has been ...
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209 views

kerberos cross realm authentication

I want to do setup for kerberos cross realm service authentication using active directory. My question is that should I create a different domain (I read somewhere that realm is a domain) or should I ...
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Deployment of Base-Node via iSCSI in Server 2012R2 HPC cluster fails (can not join domain)

We are currently evaluating Server 2012R2 with HPC Pack for an upcoming project. Sadly we are stuck at deploying the base node. The node boots via PXE (iPXE) and connects to iSCSI, installs Windows ...
3 votes
2 answers
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After setting PDC to external time source, do I have to perform a similar action for every pc/server to sync with PDC?

Server 2012 R2 as PDC, Hyper-V servers and Win 7/8 workstations I have my PDC synchronized to an external time source. What is my next step in getting my domain synchronized with regard to the PDC's ...
2 votes
3 answers
7k views

Windows Server 2012 R2 in a Windows Server 2008 R2 domain

Can a server running Windows Server 2012 R2 (file server, app server, etc.) exist on a network with Windows Server 2008 R2 domain controllers, or do the DC's need to be upgraded first?
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1 answer
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How do I manually check if Time Service is advertising or not?

Server 2012 R2, Hyper-V VM-PDC w/AD DS, DNS I originally had an Event ID 12 and successfully setup the time service as covered in this post. The Event ID 12 no longer shows up during startups. ...
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Should integration services always be installed on a Hyper-V VM?

Server 2012 R2, Hyper-V In researching my PDC time synchronization problems (noted in this serverfault post) I came across this Microsoft guidance at this link: "For virtual machines that are ...
2 votes
1 answer
9k views

How do I confirm what my PDC is using for it's time source and how do I setup an external time source?

Server 2012 R2, Hyper-V I am trying to finalize setting up my first primary domain controller. One of the warnings that always comes up after first promoting the DC is Event ID 12 along with other ...
2 votes
1 answer
161 views

Creating Offline Test environment

So I'm trying to create a test environment that hosts a copy of one of the domain controllers in production and I was wondering if anyone has some insight on the best way to perform the "copying" of ...
5 votes
1 answer
15k views

Cannot transfer controller operations master role or demote a domain controller

Server 2012 R2, Server 2012, Domain Controller role After experiencing some permissions problems on my domain I noticed that my 2nd domain controller appears to be corrupted in some way (I'm sorry ...
5 votes
3 answers
16k views

The requested operation requires elevation

We have about 15 PCs on our network. I can make changes to all the PCs except one. I keep getting the message "The requested operation requires elevation". When I try to run a program as an admin, ...
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1 answer
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Domain controller is registering 2 IP addresses with DNS

Recently a DC was promoted and the IP was used from the old DC which was demoted and shutdown.How tostop this DC from registering 2 IP addresses with DNS? Please let me know if any questions.
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2 answers
4k views

Using Exchange 2013 with Samba as DC

I realize that Exchange relies heavily on AD, and I was wondering if it is possible install Exchange 2013 into an environment that is running Samba 4 as the DC?
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1 answer
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Active Directory 2008 multiple local user accounts

I have installed a new Active Directory 2008 Domain controller into my environment. We are currently running the 2008 AD server as a secondary. The primary AD server is a 2003 Domain Controller. We ...
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several domain controller logon

I've got two domain controllers. The master is DC01 and slave Fil01. I got that problem, that some computers logon over the slave dc and not the master. How can I set the order or prevent them on ...
5 votes
4 answers
6k views

Identify applications that are configured to connect to a specific domain controller

I work with a Windows domain that has many domain controllers (DCs). I'm looking to remove some of these, but I know there are some applications that are hard-coded to use a specific domain controller ...
0 votes
1 answer
790 views

What user accounts are necessary on the domain controller pc?

2012 R2 environment When a server is created to be a domain controller, it can be setup using the domain\administrator account when is attached to the domain. The machine will also have the default ...
1 vote
1 answer
686 views

Active Directory Mismatch

I have a Active Directory Mistmatch how do I fix this? I have 2 x 2008 R2 Domain Controllers and a 2008 Domain Controller and I was trying to add a 2012 R2 Domain Controller. The Schema Version of ...
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SMB server's behavior under NT Domain and Active Directory Domain

(1) If SMB server joined to the NT Domain, does the SMB server itself executes a user authentication by communicating to a Domain Controller? To do it, does SMB client need to send a Type3Message ...
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1 answer
8k views

How do I enable Remote Desktop Connection on a domain controller?

So I've come to the conclusion that something by default must prevent RDC from operating on a 2012 R2 DC. This particular post (link) suggests RDC on a DC is a bad idea and the I understand the ...
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Domain Controller Roles not properly configured

I added a W2008R2 domain controller to a domain which previously had two W2003 domain controllers. I want to demote and remove the W2003 server that held the primary roles. I successfully ...
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1 answer
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Windows Server Domain User and Workstation Software

I have a new server with windows server 2012(domain) and want to add a few new users and workstations( with AD), so all user could login on all workstations. That is easy, but now I would like to add ...
1 vote
1 answer
915 views

Workstations cannot see new MS Server 2008 domain, but can access DHCP.

The XP Pro workstations do not see the new replacement domain upon boot; they only see their cached entry for the old (server 2003) domain controller. The old_server is not connected to the network. ...
3 votes
0 answers
1k views

Exchange 2013 and AD/GC issues

I have Exchange 2013 (minimal install and all roles are on a single server) on-premises running on a Windows 2012 R2 server (both Windows and Exchange are patched and up-to-date). Basically this ...
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3 answers
120 views

Windows 2003 DC in 2008 functional level

Is it possible to have a 2003 DC in a domain with a 2008 functional level? I was under the impression that the functional level was limited by the lowest OS version of the DCs. Are there potential ...
1 vote
2 answers
7k views

Should my exchange server also be a domain controller?

Please be kind in your response I'm no expert. I just want to know if it's a bad idea or good idea for my Server 2012 server that has Exchange 2013 to also be a domain controller. We currently have 3 ...
-3 votes
1 answer
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How Active Directory identifies a computer? [closed]

I have no administrative rights to AD in my company. I have also a virtual machine (based on Virtual Box). I want to plug it into the AD with the same identity as my PC has. How AD domain controller ...
0 votes
1 answer
743 views

Windows Server R2 2008 domain join - logon failure: unknown username or bad password

I have this problem where I try to make a winodws machine authenticate against a ubuntu samba PDC, but i keep getting the error logon failure: unknown user name or bas password here is my NetSetup....
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Windows refuses to add an additional DC

I am trying to add a second DC to my network. It seems to go well: I install AD DS on a second server, I enter my credentials and the domain, and the domain is shown. I choose it, but when I click '...
1 vote
2 answers
939 views

Replace DC/DNS in Active Directory

I have just tried to replace one of my domain controllers in a single domain forest keeping the old IP (But a new computername). As this is an environment I have "inherited" from a previous sysadmin I ...
3 votes
5 answers
10k views

Is it possible for an AD domain's DNS name to point to a web server instead of the DCs?

My active directory domain's name is "mywebsite.com" instead of "mywebsite.local". I had to do this as a workaround to other issues, and to change it will be a pain. When people inside of my company ...
4 votes
0 answers
1k views

Samba4 internal DNS and isc-dhcp zone update

Could anybody explain, how to solve this problem with internal samba4 DNS and dynamic zone updates from isc-dhcp? In the logs I have: dhcpd: Unable to add reverse map from 170.5.168.192.in-addr....
1 vote
0 answers
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How long can a domain controller not be in contact with the domain without causing problems? [duplicate]

Server 2012 R2 w/ GUI in Hyper-V role, hosting VM servers. Very small system at present. Primary Servers in this system are: Domain Controller(DC), SQL, TFS, IIS, Build server I successfully ...
11 votes
3 answers
4k views

Advice on Active Directory design for multihomed servers

I've been tasked by a customer to come up with a working Active Directory design for a scenario with the following requirements (simplified, they are actually a lot worse): There is a subnet for ...
15 votes
1 answer
2k views

Are all domain controllers on a small network considered equivalent/equal?

Windows Server 2012 R2 w/ GUI, Hyper-V host, VM DC I am installing my first second Domain Controller(DC) (sounds weird but that really is what I'm doing). I have what I think is a good process to ...
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1 answer
572 views

Samba DLC and Windows 7 Clients. Random drop of connection. Kerberos?

I have a Samba (Version 4.1.6-Ubuntu) DLC (Server role: ROLE_ACTIVE_DIRECTORY_DC) on an Ubuntu Server (Ubuntu 14.04.1 LTS) Several Windows 7 Professional Clients are connected every day and usually ...
1 vote
1 answer
1k views

Time Sync Offset on Domain Controllers and Hyper-V Hosts

I have a network with the following: Windows 2003 (PDC Emulator) (in the process of migrating) Windows 2003 DC (same) Windows 2008 Hyper-V Host w/ 5 VMs, one VM is a DC, soon to be the PDC ...
1 vote
1 answer
90 views

Domain names on 2 similar windows domains (active directory)

I am fairly new to windows administration (Server 2008r2), but I am putting together a new environment, and am setting up active directory domains. I have broken my system into 2 parts, management (...
1 vote
1 answer
1k views

Do Explicit Deny ACLs apply to a Domain Administrator account?

I've had a need come in a client with a two way trust (source company doesn't want us to have full admin rights, so we're having lots of permissions issues). We effectively need Domain Admin rights ...
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Windows Domain Controller/DNS Failure

I have a previous question up about this, but I've come to some new information and I figured I would start a new post to stir up some new discussion. To start, I will give you all a short ...
1 vote
0 answers
145 views

Windows domain controller errors

I got the following errors when enquiring two domain controllers. Cannot open security log for DC DC2.org - The interface is unknown. and OpenEventLog failed for DC DC2.org(10.126.2.6) - The ...
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1 answer
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Can user still log on if local DC (which is also the DNS & DHCP) fails?

I have only 1 domain with 3 DCs (all of them are GC, DNS, DHCP). The DCs are located at 3 different sites, A, B, C. If site B DC fails, can a user at site B log in?
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Can you demote SBS 2003 DC with Exchange still working

I'm sitting with a bit of a delema, and I don't want to demote the AD on the SBS 2003 server before I know it is safe. We are consolidating servers, and I installed a new Windows 2008 R2 Standard ...
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2 answers
445 views

SBS 2011, second domain controller - make RODC?

I have an SBS 2011 domain at a single site. I had previously added a second domain controller for redundancy (including DNS) so that when the SBS server needs rebooting the network is uninterrupted. ...

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