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

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Finding the domain a domain controller belongs to

How do I figure out the name of the domain a domain controller belongs to? For example I have the domain controller \\nFS01.nfs01.local. It says the domain of this is NFS0101 but I don't remember ...
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102 views

Cannot create a new computer account using the Windows active directory interface

When I attempt to create a new computer account using the Windows active directory interface by entering the new computer name and hitting next, I get a blank dialogue titled New-Object-Computer with ...
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256 views

Incomplete netdom computername /add: on 2008 DC

Have been following a technet article on how to rename Server 2008 DCs following a change of our disaster recovery site. All went well on the first DC I tried and the new name is showing up. I ran ...
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130 views

DNS not responding with IP address

I have 4 windows servers running 2012. One of them is a domain controller and the other 3 are connected to the domain. They all have static IP addresses ranging from 10.0.0.1 to 10.0.0.4, their DNS ...
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59 views

Log user access on windows domain

I want to log the user access to domain's computer. For example I would like to store datetime, username and computer for each login into a domain's computer. Is it possibile? I'm using windows server ...
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1answer
750 views

Active Directory: Thunderbird LDAP autocompletion not working with Kerberos auth

The Problem: I'm trying to configure an LDAP mail autocompletion - a built-in functionality of Mozilla Thunderbird 17.0.5 @ Windows 7 x64 in 2008R2 domain environment. The OS is a fresh, ...
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1k views

lmhosts and hosts file to allow user joining to domain controller

I have a domain controller on a diffrent ip range as my computer and would like to know if it is possible to join it to the domain using host file and lmhosts file? I don't want to use VPN I don't ...
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193 views

Windows clients aren't detecting new Domain Controller for logins

I just setup a new Windows Server 2008 R2 domain controller in our environment to add additional redundancy. DNS seems to work on the new server. However, when I shut down the previously existing DC ...
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579 views

Unable to change the workgroup of the server to domain name [closed]

I am unable to change the workgroup of the server to my domain name on the DC The following is the error i get... Note: This information is intended for a network administrator. If you are not ...
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117 views

Active Directory Domain Names - Forest/Tree/Children

I've been doing some reading on suggested top-level-domains for AD and whatnot. I used to setup domains as company.local and that worked just fine, however, more people want to use their external ...
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511 views

Domain Controller not updating from WSUS server

I have just inherited some existing issues in my new Sys Admin position, as i have never used WSUS before i thought i would ask you fine people for some input! All servers are 2008R2, 2 physical ...
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533 views

Turning on dormant Windows 2008 Domain Controller

We have a domain controller (one of three) that has been off for several months. It has no FSMO roles, but it is the WSUS server. Best case scenario, we turn on and it replicates with the other two ...
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109 views

How to change Domain name in Windows 2008

I have a domain controller named as ABCD.com but i have to change it to XYZ.com. And also i have secondary DC with the same as ABCD.com. So my questions are as follows: How to rename my Domain ...
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1answer
2k views

Why won't DNS role install on Server 2008 r2 with dcpromo or after running dcpromo

I am unable to install the DNS role with dcpromo.exe when adding a new server to an existing forest. Current Configuration I currently have a domain controller running windows server 2008 r2. Let's ...
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239 views

Group Policy Result summary says DC is member of “BUILTIN\Administrators”

Whenever I run the Group Policy Result wizard and select a Domain Controller as the target computer, the summary shows BUILTIN\Administrators in the list of "Security Group Membership when Group ...
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146 views

Can someone guide me with setting up Network Load balancing for RDP connections?

We have two servers web3 and web4 and a domain controller mws. I have been trying to set up load balancing for users who use remote desktop connection to connect to web3 and web4, but have failed ...
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4answers
6k 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
566 views

Why do I see a heap corruption error from lsass.exe on domain controllers after installing Google Apps Password Sync?

We're moving to Google Apps and have just installed Google Apps Password Sync. We have yet to roll this out to users and are experiencing some problems. Occasionally after a user changes their ...
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1answer
64 views

Questions rolling out two new servers

After getting a virus and turning my backserver into our primary I figured it's time time to do the right thing and use both servers in case this happens again. We're using 1 server for dns, dc, ...
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1k 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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2answers
2k views

Cannot create a new domain in an existing active directory forest

I have a domain controller setup on Windows Server 2008 R2 (Forest) and I have another Windows Server 2008 R2 (New Domain) and I want to create a new domain in an existing forest. I get the following ...
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3answers
305 views

Windows Server 2012 Database server and Domain Controller in the same machine

I'm far to be an expert in this area, so I need some light on this. I have a clean Windows Server 2012 Standard machine, where I need to install an SVN server, Team Foundation, and an Sql Server 2012. ...
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3k views

My dns name does not exist. When trying to add pc's to domain

I have a server which is running dns,terminal,ad,etc and I am trying to get desktop computer to join the domain. My server names is server.home.aplus.com (dont ask me why its so long) The domain is ...
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133 views

I keep getting this when typing in nslookup. I`m also having problems connect desktops to domain

I`m trying to connect a server my current domain. So far I just have server 2003 on the system with no roles. This server will act as a backup or a application server in the future. My other server ...
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2answers
833 views

How to create new domain w/ Hyper-V 2012 hosting the DC server?

I have a small business client that's being spun off to run independently from a larger organization. They want to start from scratch and will be on their own premises. I'll be setting up a new 2012 ...
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125 views

What does “DEL:” mean in the DistinguishedName of an AD Object?

Sorry -- I'm not really a Windows System Admin, just trying to slam through some LDAP interactions in Java. I'm finding a ton of objects with "DEL:" in the distinguishedName. Are these orphaned ...
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184 views

SQL Server reliance on Domain Controller

Just have had an interesting situation with a remote database server which I did not think happened. The setup is server A is a domain controller in the main network, and server B is on a remote ...
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1k views

How to test DNS Forwarders without disconnecting the Primary DNS Server?

I have two domain controllers in my domain in remote offices (Europe and China) and two domain controllers in the US, 4 in total. We had a network outage in our US office a few weeks back and during ...
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Domain Controller Forgetting/Disregarding User is administrator

I am part of the administrator group on our domain but I have issues upgrading/installing software on my own account. I either have to get another administrator account to login and do it or shift + ...
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75 views

DNS Service not running on a Sandboxed and alienated single Domain controller

we were trying to created a sandboxed test environment; so we promoted a member server to a domain controller and then shut it down moved it to a sandboxed netwrok and cleaned up metadata. Everything ...
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2k views

Number of Domain Controllers needed?

In the process of migrating 7 school site network from Server 2003/XP to Server 2012/7 and wanted to get some feedback on how many domain controllers would be optimal. Currently we have 4 DCs. All 7 ...
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3answers
1k views

Adding a windows server 2012 domain controller to an existing windows server 2003 domain fails

I want to add an additional domain controller to our existing domain. Right now we have only have one domain controller running on Windows Server 2003. I tried to promote a Windows Server 2012 to be ...
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1k views

What are all the possible causes of the “An Active Directory Domain Controller (AD DC) for the domain …” error message?

Earlier I was having issues connecting one of my workstations (client) to my domain, and I thought it was because the domain was not in my possession yet (reference: this question). But, due to the ...
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97 views

Do I have to own my domain before attempting to connect to my domain controller?

I am in the process of purchasing a domain, but I do not own it yet. I setup my domain controller as internal.domain.com. The problem I'm running into is in connecting my workstations to my domain. ...
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270 views

Connect to internet through DC with 2 network interfaces

I have a network like this : Client 1 <== Wireless ==> Access Point <== Wire ==> DC <== Wireless ==> ADSL Modem Client 1 : IP : 192.168.1.181 DG : 192.168.1.100 DNS : ...
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Linux workstation and Active Directory authentication

I read a few articles regarding "How to Authenticate Linux Clients with Microsoft Active Directory" My question before I do it: what will happen to Notebooks that try to login when the Active ...
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Install Forefront Threat Management Gateway on Domain controller

I have a problem on installing Forefront Threat Management Gateway on Domain Controller. After googling about this, I found that only TMG SP1 can be installed on a DC, but I do not have Forefront SP1. ...
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86 views

repetitive errors on user machines - DC migration from a windows XP based to a windows 7 based network

I'm replacing all the old windows XP machines in my network to new machines running windows 7. I hoped it would be an easy task, but apparently it isn't: all the machines I've installed (using WDS) ...
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1answer
3k views

How do I solve LDIFDE errors on “last token starts with 'C'” and “change-modify entry is missing the terminator '-'” when..?

How do I solve LDIFDE errors on "last token starts with 'C'" and "change-modify entry is missing the terminator '-'" when trying to pair existing users to exiting security groups (domain migration)? ...
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388 views

Server 2012 AD-DS Setup Fails (Microsoft.Directory.Services.Deployment.DeepTasks.DeepTasks not found)

Good Morning everyone, I am currently trying to promote my 2012 Server to a Domain Controller but when I am at the first step in the setup I get the Error Message (German, Original Message): ...
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204 views

DCPromo Before or After?

I have an older Windows 2003 Server that is doing moderate duty right now -- small SQL database and an LOB application. I plan to: Make it a DC. Install DHCP/DNS/WINS as backup for the FSMO ...
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1k views

Cannot ping my domain-joined server - Can only ping domain controller - host unreachable

I have a HyperV Server hosting a Domain Controller VM (192.168.1.50) and another VM (192.168.1.51) joined to this domain. I have: domain controller as DNS server forward lookup zone for the domain ...
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1answer
335 views

Cannot leave domain - specified domain does not exist or cannot be contacted

I have a Windows Server instance joined to a domain. I need to join it to a Workgroup temporarily but when I try to leave the domain it gives me the below error "The specified domain either does not ...
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1answer
51 views

Microsoft Online Directory Sync is using sub-optimal Domain Controllers

When we make changes and need to force an immediate synchronization, some significant annoyances have hindered us. The primary problem is that our DirSync server is pulling directory information from ...
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1answer
1k views

w2k3 AD DC Demotion fails with “no other AD DC for that domain can be contacted”

i've a small office with a single w2k3 sp2 DC(bad idea, but it is real), now, i want to make a clean install of that pc, so, i got another one, install w2k3 sp2, add it to the domain, dcpromo and set ...
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59 views

Domain Controller User

I want to create an user of our domain controller (Windows Server 2008) so that he can create and delete any domain users other that those granted administrator rights, how to do that?
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Lots of Failure Alerts on my DC

I am receiving lots of Failure Audit logs on my DC, can you guide me - how should i identify the culprit. Please see the below print-screen for more detail. The logon type is 3, that means it is a ...
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NERR_DCNotFound when attempting to join Windows Server 2010 domain using PBIS

I have a RHEL 6.3 Amazon Web Service instance I'm trying to join to a Windows Server 2012 AD domain through PowerBroker Identity Services Open (ie: not enterprise). The Server 2012 instance is in the ...
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1answer
637 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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370 views

DC/DNS failover with global/common DNS roundrobin

I think I am getting lost in network failover land. I am trying to set up a Windows Domain Controller and DNS, while providing resilients and failover. I have two Domain Controllers and DNS servers. ...