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

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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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245 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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70 views

SAMBA: wbinfo -r returning -1

I have a Clearos server acting as a PDC using SAMBA. I have set up an Ubuntu client then connected to the domain and authentication is working. On another Ubuntu client i get the following error su ...
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77 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 ...
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47 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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2k views

Encrypting SMB traffic with Samba

We use Samba on Ubuntu 14.04 LTS as a PDC (primary domain controller) with roaming profiles. Everything works fine, except for if we try to enforce encryption via setting: server signing = ...
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349 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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179 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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303 views

How best to recover from Primary Domain Controller failure?

Recently my small, aged private office Windows Server 2008 machine failed. Unfortunately, the machine was my primary domain controller and I don't have any type of secondary domain controller in the ...
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236 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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297 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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704 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 ...
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146 views

Domain time drifting with VM DCs / host domain members

I'm following the advice given in this article: ...
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837 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 ...
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95 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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1answer
58 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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300 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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42 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, ...
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28 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 ...
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144 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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2answers
579 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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168 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 ...
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1answer
639 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 ...
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132 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). ...
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654 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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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 ...
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2k views

Applying user settings on a Windows Server 2008r2 server slow from external computers

I have 2 almost indentical environments consisting of a Windows 2008r2 server host running hyper-v and on each host I have 2 Windows Server 2008r2 guests. One of them acts as Domain Controller and 1 ...
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131 views

Main DC is no longer NTP or hold FSMOs

Good Afternoon, We two virtual DC and one local physical read only DC. When we moved our data center offsite with a warm backup site we p to v our DC’s and DC1 was the master schema. While ...
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103 views

Change Active Directory in Samba share server

I have the next scenenario: Legacy Windows 2k Server as PDC (Primary domain controller) called A Samba share server with some resources connected by winbind with A Clean Installation of Zentyal ...
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1k views

My domain controller/active directory server can't establish a connection with the global catalog [closed]

I have a Windows Server 2008 R2 running as my domain controller. It is responsible for Active Directory, DNS, and DHCP. It is the only DC in the forest. Active Directory reports errors every hour: ...
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257 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 ...
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168 views

WildFly/JBoss server group deployment understanding

According to JBoss documentation: In managed domain deployments are associated with a server group. Deployments will be provided to any server that belongs to a particular group. ...the ...
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384 views

WebLogic 10.3.2 LDAP Authentication failure after Domain Controller Patch MS14-066 (KB2992611)

I have configured a LDAP authenticator in my WebLogic 10.3.2 domain. Login worked until the domain controller was patched with MS14-066 (KB2992611). Domain Controller OS is Win Server2008R2 (x64). ...
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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, ...
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185 views

Target object for this command has incorrect format

I'm doing some 70-410 training and this script that I'm trying to run that I made keeps on failing due to an error that I receive that I stated in the topic. doesanyone see anything wrong in this: ...
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227 views

Domain controller is not listening on port 445

Is there a way to find why the DC is not listening on 445? -> Firewall rules checked , no denies found and the traffic is allowed. -> file share and print share services running. What else to check? ...
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173 views

Local group policy taking precedence over Default domain controller policy

Modified Default domain controller policy to disable and rename the Guest account name using below settings Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> ...
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165 views

LDAP query to obtain distinguished name of a list of users

Hi im working on a migration process on which we are migrating users from one server to another domain controller. Right now I have a list of users I migrated, but I also got another of them I didnt. ...
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84 views

Exchange 2007 SCR Setup Error finding Domain Controller?

just setting up my SCR enviroment however when running the Enable-StorageGroupCopy command its returning with an error stating that my exchange server object could not be found on my domain ...
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62 views

Reviewing source of DNS requests

Is there a way to know the source of DNS requests which were handed to the Forwarder (requests which were handled by the DC are of no interest)? If I set up a BIND server which is a forwarder to the ...
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46 views

Best OS to rename Windows Domain

I have a Windows Server 2003 with a domain name of: test.testdomain.com I want to replace this DC with a new 2012r2 but want to know if I should rename the domain first and then promote a new domain ...
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83 views

Domain controller not appearing in DNS on any server but itself?

I have a site with a DC I want to decommission, and a relatively new one (promo'd within the last two weeks). I'm having trouble demoting the old server, and in the process of trying to figure out ...
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1answer
105 views

How to apply a windows domain network in multiple locations

I would like to implement a Windows Domain Network, corp.mydomain.com. The domain network will consist of 3 LANs (in small offices/residences) that will use Comcast or AT&T as their internet ...
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139 views

Windows Server 2003 DC is 32 minutes slow

I have a Windows Server 2003 DC SP2 that is precisely 32 minutes slow. It is the only DC in the domain. The server is set to query tock.usno.navy.mil. My google fu sadly has failed. Any suggestions? ...
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Does a Domain Controller only control users accounts and permissions

I know this question will be very simple for most of you but as I am trying to wrap my head around it, I am still a little confused and haven't been able to find anything that flat out says what I'm ...
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46 views

Neglected services on old DC - how to move to new DC?

We have installed a new Server 2012. The new server: DC3 (192.168.0.3), has been promoted, and is now our main DC (includes : DNS, DHCP) Schema master DC3.domain Domain naming master ...
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1answer
248 views

Possible to override a GPO that doesn't have an 'Enabled' or 'Disabled' option?

I have a GPO that is directly under the domain in the tree in group policy manager. Meaning it applies to all OUs in the domain. (This wasn't my doing) The "Interactive logon: Message text for users ...
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274 views

Windows 7 Spamming Domain Controllers on ports 445 and 139, causing lockout

I have a domain lockout issue and in troubleshooting, I found through netstat that my machine is pummeling the domain controllers on ports 445 and 139. It is creating thousands of user ports to do ...
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231 views

Newly promoted domain controller showing many errors but dcpromo didn't complain?

I have a domain separated into four sites. In one of my remote sites, I have promoted a new DC and will be decommissioning the existing DC in a few weeks. I didn't receive any errors when I did the ...
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82 views

Forcibly Split 2003 Active Directory Domain

I am currently trying to find the most efficient way to split a single domain into two, distinct, fully functional domains. We have two sites, and several DCs. The sites, Site A, and Site B, are ...