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

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Can i recover my all domain computers and users from IFM and in-cooperate them in new forest? [on hold]

My only Active Directory Server on win server 2008 R2 with one domain controller crashed today. i.e there wan no additional domain controller. The only backup that i had was IFM media. So can i ...
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9 views

Cannot ping from one side to different network on a Windows Domain [on hold]

I have three virtual machines in VMWare fusion namely, win2k12pdc, win08cas and win08mbx. Win2k12 has an external interface that has address 192.168.0.11 from pool of my internet router. I have ...
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1answer
867 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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2answers
5k 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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12 views

Domain attached file server not authenticating with DC

I have 2 servers: Domain controller (Windows server 2012 std) - 192.168.1.2 Name dcsrv01 File server (Windows server 2012 std) - 192.168.2.2 Name fsrv01 The file server is domain attached. The two ...
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3answers
353 views

What should I do if a domain controller is stolen?

If I have a Windows 2008 or 2003 domain controller in a remote office (and its own AD site) that gets stolen, what sorts of things should I do to my main network or domain (if anything) in response? ...
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1answer
49 views

Merging multiiple domains with the same existing domain name (office.local)

I am working with a new client who has 5 offices and four of which have a single domain controller with the name of OFFICE.LOCAL and another one with the domain controller DENTAL.LOCAL. Oh and all of ...
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2answers
55 views

Running a Windows Server 2012 Domain Controller in Hyper-V

I attempted to install Windows Server 2012 on a Dell PowerEdge 2850 and found out that the server may not support Server 2012. Is there any downside to running a Windows Server 2012 domain controller ...
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3answers
163 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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3answers
5k views

Domain Controller thinks its on a Public Network

We have a Server 2008 R2 Primary Domain Controller that seems to have amnesia when it comes to working out what kind of network it is on. The (only) network connection is identified at startup as a ...
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1answer
26 views

LDAPs using Anonymous Access to AD forest

There is a problem related to AD which I cannot understand what configuration is missing to fix the issue. I have two DCs: testa and testb and both contain AD. I'm logged in to testa and I'm trying ...
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1answer
40 views

Windows server 2008 R2 Certificate Authority error event viewer

I am getting the error "The windows default policy module initialize method returned an error. The specified domain either doesn't exists or could not be contacted the error code is 0x8007054b. The ...
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2answers
141 views

Colossal Failure After Domain Rename

The backstory... I recently upgraded a MS Server from 03 to 2012. The server needed to be a domain controller and for simplicities sake I named it foo.com instead of naming it something different ...
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2answers
60 views

Will a Windows domain rename require new SIDs?

If I rename my local windows domain on my domain controller will all of the user accounts associated with the "old" domain name need to be recreated? Will the user SIDs still be valid and would my ...
0
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1answer
38 views

Contact DC from a client without DNS

I have read Can I create a DC without a DNS Server?. But my question is a bit different. I have one client in a completely different subnet from the DC. That client does not have access to the ...
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2answers
383 views

SNMP service security tab is missing - Windows Server 2012 R2 - DC

i have to configure the security settings for the SNMP-Service on a Windows Server. But they are missing! Here are the fakts: OS: Windows Server 2012 R2 I installed the SNMP feature and i belive, ...
4
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2answers
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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1answer
327 views

Installing SQL Server on a Domain Controller [closed]

I want to install SQL Server on a Domain Controller ( windows server 2003 R2) but i have an error because SQL Server services can not run under a local service account or a network service account.
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1answer
923 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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2answers
4k views

processing of Group Policy failed only on 2008 Servers and Name Resolution failure on the current domain controller

Spent last 3 months doing a upgrade from 2003 domain to a 2008R2 domain. our last DC was rebuilt (5 total) and brought up on line. After it was put on line we have some 2008 and 2008R2 servers (10 ...
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0answers
59 views

WinServer 2012 DC with 2 IPs on one NIC - DNS and other Problems

I have a Windows Server 2012 Domain Controller which is also temprarily running an SQL Server. For not having to change the SQL Server IP in all the clients I assigned its former IP to the DC as the ...
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39 views

kinit won't connect to samba4 domain controller, cannot resolve hostname

i have set up a domain controller on my virtual machine. At first i will post all important configs, so you know what works already. Hostname: affenhirn2 Domain Name: example.affenhirn2.local (i am ...
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14 views

external domain controller for home network [duplicate]

my home network consists of two pcs and one laptop all behind one DSL Router. Simple Question: Is it possible to set up a Windows Domain Controller on a V-Server (hosted in the Internet) in such way ...
3
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1answer
210 views

decommissioning a domain controller [duplicate]

I am new to AD. We have a total of three domain controllers that are also DNS servers. Can I decommission the DC running Windows Server 2003 standard. Will the global catalog be replicated safely?
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3answers
954 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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121 views

Domain Controller, Windows 2012, Computer policy could not be updated successfully

I have issue with DC cant update computer policy PS C:\Windows\system32> .\gpupdate.exe /force Updating policy... Computer policy could not be updated successfully. The following errors were ...
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4answers
11k views

How to reference a Domain Controller out of the Local Network?

We have multiple servers scattered over different hosting providers. For learning, experimenting and, ultimately, production purposes, I set one of them as a Domain Controller. That went well, most ...
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1answer
291 views

How to replace an old Windows 2003 SBS DC with a Win2008 Standard Edition DC?

Objective: Trying to replace a Windows 2003 SBS domain controller with a windows server 2008 Standard Edition Domain Controller. What I did: used ADPREP. Then all user accounts and OUs are ...
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2answers
9k views

Cannot Add Windows Server 2012 as Member Server to Existing Domain

We have an existing Windows Server 2003 domain and several other computers are on that network (i.e., we have Windows Server 2008 member servers, other Windows Server 2003 member servers, Windows 7 ...
4
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1answer
6k views

Unable to join 64-bit Windows 8.1 Pro Client to Windows 2003 domain. Win 7 works fine

I am unable to join a 64-bit Windows 8.1 Pro Client to our Windows 2003 domain. A 64-bit Windows 7 client joins fine. After installing Windows 8.1, before joining to domain, if I run nltest ...
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2answers
1k views

Mutli-DC Environment DNS Error 4015

We recently added a new 2008 R2 DC to an existing 2003 forest with one 2003 DC. We haven't raised any functional levels. The 2003 DC was powered down (it hadn't been demoted yet, but all the FSMOs are ...
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1answer
39 views

AD FS and DC on same Server

i have to connect AD with Azure AD but we have a 2008 r2 server and wwe don`t want to upgrade the server to 2012 r2. Is it possible to have the domain controller and the ADFS server on the same ...
2
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1answer
244 views

prevent domain controller using wpad for windows update

We have a 2012 domain controller in an environment where we are running a web proxy auto discovery (WPAD) setup for client devices, and that proxy server requires authentication. However windows ...
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5answers
4k views

Computers “applying computer settings” for a long time on start-up…why?

Might be a bit of a long shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when ...
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2answers
70 views

How to setup a Domain Controller in the cloud

We are implementing a new Windows Server 2012 R2 domain controller for our 2 small offices, and we want to set it up on Amazon EC2. I have read that with this type of setup you normally use a VPN. How ...
6
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2answers
107 views

Setting up a Windows Domain in a O365-only company

My company is quite young and small, but since we're growing, we want to rollout some software deployment solution. We haven’t decided which one yet, but they usually need a Windows Domain, and we ...
4
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2answers
42 views

Resetting DC Password from DSRM

How can I reset my DC's password? I am able to login to the server in Directory Services Restore Mode. I tried pulling up AD DS Users and Computers from there, but it does not appear that it will load ...
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2answers
93 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 ...
2
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1answer
18 views

What is “Ticket Options” Referring to in Domain Controller Event Logs?

I'm trying to figure out what Ticket Options is referring too within this event log off my domain controller. It is in response to a kerberos authentication request. AgentDevice=WindowsLog ...
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1answer
40 views

Adding additional 2008R2 DC to Window 2012 R2 domain

I am migrating our company's AD from a Windows SBS 2008 to a news Windows 2012 R2 Essentials server. Everything went fine and the new AD now is in production stage. The last step is adding an ...
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37 views

Would a duplicate DC on same subnet be bad, if ALL auth is only internal to the server?

Here's a weird scenario I'm looking for some guidance on. I have a VM that is a purpose-built "self-contained" demo environment. It has an application stack installed, as well as Active Directory, ...
2
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3answers
475 views

Run `certutil -DCInfo` on a different target domain

It seems that running certutil.exe -DCInfo Verify will check the certificates for all domain controllers in the domain of the logged-in user account. In our AD forest, we have a handful of domains. I ...
2
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0answers
26 views

Consolidating Domains from 2 UPN's to 1

We currently have 1 domain (no children) at corp.domain.com. We have an alternate UPN so that users can have their UPN as username@domain.com (no corp). Many of our earlier users however have the ...
0
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1answer
57 views

Show NetBIOS name before Username on Windows 7 Logon

I am setting up a new DC using Windows Server 2008 R2, and my FQDN is MFC.com. When I logon to a client computer (E5530.MFC.com) using that domain, instead of showing "MFC\user.name", it shows ...
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1answer
58 views

Domain network not recognized after replacing switches (Domain Controller or Switch)

I had difficulties with our network speed, we still had 100MBit switches so we made a change and replaced our 3 switches with some nice new ones (1 central 16 port going to 2 switches with 24 ports). ...
2
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1answer
351 views

Issue Demoting Domain Controller

I am in the process of demoting a 2003r2 DC. I have set up a 2008r2 Server, set it up as a DC and moved all the roles over. Now I am ready to demote the older DC. When I run a dcpromo I am getting the ...
0
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1answer
57 views

cloned windows 2003 Domain Controller wont let me add windows 2012 as member

I did a P2V of my Windows 2003 Domain Controller. I'm trying to add a Windows Server 2012 VM (Computer name: SQL-SERVER) as a member of the domain but I can't. I can ping to both VMs. I can do a ...
2
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2answers
255 views

How to join computer to domain

I have a DC running Windows Server 2012 with an internal IP of 172.31.27.158. It is both a DC and a DNS Server. Here's proof that DNS is running fine: The machine that I would like to add to the ...
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1answer
86 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 ...