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

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Long delays when laptop cannot access domain controller

I have a laptop that is part of a domain. Unfortunately, when the laptop is not connected to the domain, I observer extremely irritating delays in various situations. For example, when I start Google ...
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66 views

Why doesn't the time match on two Windows Domain Controllers despite resync?

In my domain there are two domain controllers, there is a gap of 3 minutes between their times and than I can find this difference between many clients (it depends on their DC). If I run this ...
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43 views

How to provide Internet Access to Private Subnet [migrated]

I really need some help/advise on a networking issue I have. I am fairly new to this sort of configuration so any help would be very much appreciated. My Setup: I am using VMWare Workstation 9 to ...
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42 views

Windows Server 2008 R2 - proper way to remove failed Domain Controller

Hello i have a case with single model server. Original name of HP server was w8kcdn, the server started generating problems, so i needed to reinstall it. I've setup temporary install on PC with ...
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13 views

Deleting reverse zone in windows 2003 DNS server

This is my first time posting here on server fault. The problem i am faced with is when i try to add another DC to my network i am getting a very weird error. After some countless hours and re-reading ...
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38 views

Can I use an RODC for Active Directory athentication if the writeable DC is not available for several months?

We are running an Read-Write DC at our home office which we are using for authentication when were are working there. It works fine as long as we are at the office, but we are going to be on the road ...
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35 views

pfSense and Windows Domain Controller - configuration?

I've got a small scaled business network separated into green, orange and red using pfSense as firewall & gateway. In the local network, there's a Windows server machine hosting a domain ...
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29 views

Exchange on a domain controller [duplicate]

I have exchange 2010 installed on a 2008 R2 Domain controller. Will it create problems for exchange if I depromote the dc back to a normal domain member? I am guessing it probably will which is why ...
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56 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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53 views

Local Privileges/Rights Issues after Domain Rename Windows Server 2012 Std R2

After renaming a domain from .com to .local I've noticed that none of my credentials work when I try to make any changes using my domain Administrator account. When I try to install software that ...
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43 views

Prevent / Throttle LAN clients using domain controller as gateway

We're in a remote location in the UK, and as a result, have limited bandwidth. We are using on-router bandwidth throttling to ensure QoS for all users on the network. Our domain controller bypasses ...
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534 views

Domain Controller offline for a few days

My primary domain controller died over the weekend, its motherboard is being replaced tomorrow. I have been told that the mac address of the server may change once the new motherboard is installed. ...
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84 views

Unable to use Remote Desktop connect to Windows server 2003 by Terminal Services

I have a system composed with few windows servers 2003 R2, one is built as the domain controller another one as a web server. I tried to remotely log on the domain controller with a wyse thin client ...
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1answer
26 views

How to dump(collect) all the group policies in a domain?

I want to collect all the GPOs in a domain , for reviewing settings. How many ways are there to do it. I used Get-GPOREPORT in Powershell, but it gave a comprehensive html file, is these a way to ...
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1answer
84 views

Use Roaming Profiles as Default in AD (running Samba)

I've just set up an Active Directory Domain Controller (running Samba 4), created users, shares, groups, etc and everything is working. However, I have an environment where the use of roaming ...
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1answer
49 views

FRSDIAG / NTFRSUTL looking for servers which don't exist

I am using the FRSDIAG room(from tech-net) to do diagnosis on FRS replication. The issue is its tying to check the DC's which no ,longer exist . Error being "missing server reference for the server ...
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2answers
101 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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55 views

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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35 views

Domain controller with new domain on my network

I am migrating my organization from one domain to another. The old domain can be referred to as X, and the new domain is Y. On domain X, I have created a VM that will act as a DC for domain Y. ...
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31 views

Sysvol Replication issue

I have read a lot about this recently and must say it is doing my head in. now what I did was 6 months ago we did a upgrade of our infrastructure. We had a 2008 R2 server for domain controller now I ...
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1answer
55 views

DNS and IP Configuration for Windows Server 2012 DC

I am getting these errors: SERVER Error DNS: DNS servers on vEthernet (Intel(R) 82567V-2 Gigabit Network Connection - Virtual Switch) should include the loopback address, but not as the first ...
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3answers
398 views

Domain Controllers as internal DNS servers

Our company environment is growing rapidly and I'm in the process of upgrading our Domain Controllers, but before I do I wanted to do a quick sanity check to make sure I'm still doing everything the ...
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49 views

Migration of Virtual DC to another ESXI host

I have DC on ESXi host. I want to migrate it to another ESXi host on same LAN. What is the best option? [I already have vCenter and VEEAM) Turn Off DC, and do migration from ESXi-1 to ESXi-2 using ...
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35 views

Domain controller stops mapping drives from file server

File Server: Windows Server 2008 R2 Standard Domain Controller: Windows Server Standard FE 2003 SP2 This has happened twice now. User will try and log in using their domain accounts and will receive ...
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44 views

Samba Roaming not working

I had configured Samba as domain controler on Ubuntu 14.04. I can register computers(WIndows 7) to the domain but the roaming profile does not work. smb.conf looks like: # Global parameters [global] ...
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52 views

Unknown issue taking down client machines, virus or coincidence

I’m sorry if this should be on SuperUser instead of ServerFault. Please ask me to migrate the question instead of flaming. I’ve had 2 windows desktops go down on the network in the space of one ...
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52 views

Active Directory DNS probelm

I have following scenario. Windows 2008 R2 base Active Directory DC (DC1), which is hosting DNS+ DHCP too. (previously it was on windows 2003 32bit, i migrated it last year on 2008 r2 64bit). Also ...
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207 views

If I join esxi to an Active Directory domain, how does it choose which DC to authenticate to?

I'm familiar to vSphere and large installations, and not at all familiar with the free products. Topology & configuration We have some branch offices that use ESXi and have a DC resident on ...
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76 views

windows 8.1 machines have black screen after removing one of two domain controllers

We recently had a DC crash out, fortunately(?) not our GC, so we removed it from AD, and DNS. Most of the machines on the network (All of our XP, 7 , 8 machines) appear to have picked up the new DC ...
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1answer
263 views

Continuously check LDAP connectivity to Domain Controllers ( LDAP Heartbeat Check)

working on developing script which runs via schedule task ; whole purpose of it is to target few domain controllers and continuously(for every 2 sec) do a ldap query targeting that particular DC and ...
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22 views

Windows Domain controller recover test

I'm testing a Exchange 2012 VM recovery in a Hyper-V test server. I have this VM, 2 DC and a Exchange server: SRVDC1 (pdc, nm, rid) SRVDC2 SRVEX2 As far as I know I need to recover also a Domain ...
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3answers
113 views

Add additional name to a Domain Controller

I am looking to rename a Domain Controller. Functional level and everything else means I can use netdom to carry out the process. Looking a the technet article on the subject I can see the first ...
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43 views

Creating Exchange account for user of subdomain

We have a W2008R2 server which serves as AD DC for intra.contoso.com and Exchange server. We have a W2012 server which serves as AD DC for subdomain sub.intra.contoso.com (which is not a new forest) ...
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Will the timezone be converted across geographical areas?

I'm using Active directory in Windows server 2008 R2. My domain is in a particular timezone and my client say X is in another timezone. Now I have implemented certain restrictions that X cannot logon ...
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2answers
110 views

Domain Controller using sub domain while hosting provider does main DNS

I'm trying to setup a Domain Controller on Windows Server 2012 R2. I read that best practices are to not use a made up TLD (such as .local, .lan, etc.), but use something that you actually own (say ...
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264 views

How can I prevent the compromise of a Domain Controller on ESX stored in a unsecured location?

A client of ours has a DC that will be located in an insecure location. RODCs and separate domains/forests are not permitted by management. All the servers will be located on a VMWare ESX server. ...
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2answers
83 views

Infrastructure advice - appliaction and network servers

I'd like to ask for server infrastructure advice. We'll be upgrading our network infrastructure (built on MS ecosystem) and so far we have two servers (not counting ISA server): one machine serves ...
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88 views

DNS slow after losing DNS Server

We have set up a small Windows Server 2008 R2 network with a domain controller which is also acting as the DNS server for the network (we opted to install DNS when setting up the domain). This network ...
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1answer
63 views

what happens to the local users and groups when promoting a server to a domain controller? [duplicate]

What happens to the local users and groups when promoting a domain member to a domain controller? I have a Windows Server 2008 that I have made to a domain controller by installing AD DS, but it was ...
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208 views

Windows Server 2012 Migration (DNS/AD DS Standard Eval to Essentials OEM) P2V -> Do I need a Secondary Domain Controller during migration?

This is my first post on this exchange (although not my first on stack exchange), so please have patience. I am a 3rd year student intern, and I have been tasked with virtualizing the server systems ...
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1answer
101 views

gpupdate failing when using Samba 4 AD DC

I have a Samba 4 AD domain running with 2 DCs on Centos 6.5, with a named DNS backend. I have multiple Windows 7 machines joined to this domain, which is fine. However, I can't get GPOs to apply. ...
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27 views

Powershell waiting for more parameters when asking for all users from a specific OU?

I want to get all the users from OU "myusers" so I have this cmdlet right here: get-aduser -filter * -searchbase"ou=myusers,dc=domain,dc=com" But when Im running it, powershell prints a >> ...
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57 views

what happens when a DC fails? How can the clients identify DC failure? [closed]

When a DC fails, it loses the privilege to authenticate and so client will find for secondary DC closest to its site. In another scenario, client has selected a DC closest to its site by using subnet ...
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41 views

Add 2012 Standard server to existing SBS 2011 domain for multipleRemote Desktop access to resources

Clients current network configuration: SBS 2011 domain with 15 user CALs /not used for email just pretty much used for data and occasional RWA to desktop PC's. They will be adding another 40 ...
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3answers
116 views

Domain account credentials fails to start scheduled tasks

I have 2 Windows 2000 servers in a domain 'DC', which run numerous windows scheduled tasks under the 'DC\Task-User' account. These tasks are and have been running successfully in the past couple of ...
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1answer
118 views

How to logon with local account? RODC “There are no logon servers to process your request”

I have a site-to-site VPN, writeable DC in main office, Read-only DC in branch office. Today the VPN went down, but i couldn't log in to the read-only DC - the error message came up There are no ...
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113 views

how to expose Domain Controller on public IP address, and make other DC talk to it?

basically we have 2 DC servers which used to have site-2-site VPN but it's not working anymore. So we started to get various errors, DNS stopped working, etc, etc. As a last resort attempt (before ...
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844 views

Why can I login to a box even if the AD Domain controller is down?

Scenario: While my DC is running, I log into an arbitrary machine. I stop the DC I log off the arbitrary machine. Let's bounce it for good measure, too. When the machine comes back up, I can still ...
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2answers
190 views

How to find which machines are configured for specific DNS server?

We are currently removing ancient DC's from our domain so we can upgrade and I ran into an issue the last time one was removed. We had a few old UNIX machines that were pointing to a certain DNS ...
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68 views

Looking for advice, domain controller/remote logon

Alright, so we currently have 2 locations with 10 pcs at each location. We're looking for a solution that will allow us to have any user, use any PC, at either location and be able to login without ...