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

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All options greyed out when trying to configure Active Directory Domain Services Windows Server 2012 R2

I am configuring the first domain controller for a new domain. The install of Active Directory Domain Services seemed to go ok, but when I attempt to configure the domain controller it gets stuck on ...
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42 views

Windows Server 2012 has stopped accepting new wksts joining our domain, error 53: the network path was not found

We have Windows Server 2012 R2 Standard as our DC. Several workstations were added to our domain successfully. But then (I cannot determine what exactly could be a show-stopper) it stopped accepting ...
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2answers
22 views

Remote Desktop Services role - Do I need it in order to use MSTSC (RDP/RDC) in my domain?

Greetings and thanks for reading (apologies for the length). I'm a new Sys Admin and I have a (potentially silly) question for the more seasoned veterans. I'm migrating our primary Domain Controller ...
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13 views

Issue with creating a new forest and promoting a domain controller

I am creating a forest and domain controller for the first time. The error I get is: Error determining whether the target server is already a domain controller: Starting a command on the remote ...
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0answers
26 views

How to disable Null Session Enumeration of the DC?

I am a sysadmin for a company, and we just had a Penetration Test done on our internal network, the team discovered that it is possible to perform query\enumerate our DC (Server 2012) for information ...
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2answers
28 views

Hyper-V standards, replication before or after exchange

I'm currently building my own lab to improve, however I have a couple of general questions. I have 2 dell R710 servers, with 2012r2 and the hyper-v role installed. What I want to do is build up 4 ...
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1answer
16 views

New site is not listed when adding new domain controller

I inherited this network and I'm trying to figure out what I am missing. I created a new site in Chicago and I want to add a domain controller to it but the new site is not listed when I go to ...
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10 views

Running Session Virtualization in Server 2012 off a single server box

My technical level is below average here. I have an HP (Proliant DL380 Gen9 Xeon e5-2620) machine running Server 2012 and Wyze thin clients off which I want to run 10 full Windows 8 Remote Desktop ...
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1answer
70 views

Can't log in to the DC remotely as Admin

I need some assistance ASAP my old IT Manager who got fire mess up our DC. Now I can' login to DC remotely as Administrator. Non of the 5 Windows servers that I have. This is the error message " To ...
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1answer
49 views

Explain how FRS replication backup works

Please explain me why I have to add just some registry keys to repair sysvol-replication. I mean, it is like file-based and I want to backup it before I change anything. There are some NtFrs 13568. 2 ...
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1answer
79 views

DNS Inaccessible

I know this might seem a duplicate but wait! We have a Windows Server 2012 R2 domain controller, it obviously is a DNS server which hosts one AD-integrated domain. recently, it stopped responding and ...
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39 views

Logging in after an Acronis Restore on Server 2003 with “Windows Cannot Connect to Domain…” msg

We have two machines both running Windows Server 2003. The AD Machine is the Active Directory. The CTX Machine is our Citrix File Server (this has a RAID Array). Recently we had a RAID problem and ...
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11 views

Joining Samba4 domain as BDC

I am attempting to build a Backup Domain Controller (or BDC or Read Only Domain Controller, or whatever you decide to call it), but I am having issues joining the server to the Samba4 domain. I have ...
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1answer
18 views

EventLog “Access Denied” after installing an additional DC in a 2012 environment

After promoting a new DC into an existing domain, Eventviewer shows the following: I might as well mention that the Installation itself did not experience any issues When looking at the ...
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4answers
76 views

Will cached domain credentials stay working if machine never re-connects to domain?

I have researched this thoroughly, and cannot find the answer I am looking for. A company I recently left is going through a bankruptcy. They have already auctioned off most the IT equipment, ...
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1answer
142 views

w32time in domain polling from wrong Domain Controller

From the MS Documentation I can see that computers in a domain should get their time from the PDC domain controller, and if done right the PDC should get it's time from an external source. In my ...
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1answer
25 views

“sub domain” in lnternal network

i have a small network under a Windows domain-controller. the server (Win2012) run a WebSite which is accessible by typing the machine-name (srv/). i want add a website with binding to sub-domain: ...
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1answer
51 views

How to create an Internet facing Domain Controller Without VPN

I am extremely new to this. I am trying to create a domain controller that could be contacted via Internet. In clear words, I am trying to create a Windows Server 2012 R2 domain controller with ...
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108 views

Event log subscription returns error code (0x138C)

I have been battling getting Event log subscriptions to work on my server 2012 R2 domain controllers. I have created the collector-initiated-subscription using the GUI and selecting the defaults ...
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1answer
34 views

what are the implications of running a FQDN as internal AD domain and point A-record for website to different host?

The MSP for a law firm office that has just joined our company is using a FQDN as an internal AD Domain and has been doing so for sometime apparently. They have this issue in that they have a website ...
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2answers
83 views

Any Tips when Raising the Functional Level of a 2003 Domain

I will be doing my first DFL rising this evening (from 2003 to 2008 R2). Is there anything worth noting that I should look out for? Any risks involved? Or server reboots? I've done a system state ...
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2answers
39 views

Unattended DCPromo creating new domain fails as user is not domain admin [closed]

I have installed Windows Server 2003 and am trying to make it a DC on a new domain. It works ok if I use the wizard, but when I try to use an answer file, it says 'An AD domain controller for the ...
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1answer
59 views

Re-join same computer to Windows domain without domain admin privileges

Is it possible to have a previously domain connected client computer re-join a Windows domain after a clean re-install of the OS, to assume again it's old identity, all without the explicit say-so of ...
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1answer
36 views

Any way to query LDAP binds on domain controller?

I'm working on planning a DC rebuild, and I'm trying to be as thorough as possible before demoting the old one. Is there any way to view all LDAP connections to a DC either by source IP or hostname?
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1answer
103 views

Cannot create new users in Active Directory (Using Samba4 as DC and AD)

I setup Samba version 4.1.17-Ubuntu as domain controller and active directory, and everything seemed to go smoothly, but when I try to use the administrator account on one windows 10 PC domain member ...
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69 views

Cloning Windows 2012 R2 domain controllers with KVM

Virtual domain controller cloning is a new feature from Windows Server 2012 that I use because it's a very useful and simple way to add additional domain controllers to an Active Directory domain. ...
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1answer
146 views

dcpromo prerequisites for Active Directory preparation failed

Cannot promote a new Server 2012 R2 server to domain controller on an existing domain. The prerequisites check fails. Verification of prerequisites for Active Directory preparation failed. Unable to ...
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2answers
52 views

Are there any specific tools for troubleshooting Domain Controller & Client connectivity?

I am setting up a test rig on Amazon Web Services comprising of 2 web servers, 1 database server and 1 domain controller. All the servers are Windows Server 2012. I have had random occurrences of the ...
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1answer
39 views

Dc Replication issue when on one of the Dc moved to another location [closed]

We have one Domain controller in Dallas office and other 2 in Chicago. An administrator in Chicago moved 1 domain controller to Salt lake, now the problem starts here Chicago location and salt lake ...
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14 views

What are these ACS containers under my subnet objects?

I have ACS folders under my subnet objects in sites and services. Did some googling and now I'm more confused. Apparently this is Windows QoS Admission Control Service- which is Windows ...
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2answers
91 views

Cannot run SAMBA (DC) and OpenLDAP, (The port is being used)

I installed samba and made it a simple domain controller, and I intend to set it to make the authentication over OpenLDAP. The problem is I can NOT run both slapd and samba processes at the same time. ...
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1answer
27 views

Is _msdcs a separate application partition?

I have read in MS docs that by default DomainDnsZones.domain.com and ForestDnsZones.domain.com app partitions are created when dcpromo is run on the first DC in the forest. Isn't _msdcs not also ...
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1answer
49 views

Join Computer to Domain with Seperate Active Directory and DNS Servers [closed]

I'm trying to understand how to join a client to a Windows domain that has a separate AD and DNS server. I have installed one server with the AD role and one server with the DNS role. Even if I ...
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1answer
82 views

Received an email about abuse on our public dns server

We have several virtual machines on a public network due to the ip addresses being public. We received the following email today: We have received the following complaint for xxx.xxx.xxx.xxx. ...
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4 views

Symlinked files in shares not showing for clients

I have a bunch of shares that contains symlinks to files and folders. But the files don't show up when viewed by clients. Let's assume I have Ubuntu set up as a Samba Domain Controller and I add a ...
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22 views

Samba on Simply Mepis 1.5G can't join Active Directory domain

As a proof of concept I have Simply Mepis 1.5G (the Linux Box) running on an Oracle VirtualBox. Also on the Network I have a Windows Vista for Business Laptop and a Windows 7 Professional Laptop. I ...
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1answer
125 views

DC locator service (Server 2008R2/2012) - what triggers switching to alternative DC

I'm wondering how frequently DC locator checks availability of domain controller it is connected to. I assume it picks domain controller upon startup, but I'm not sure about the following: - How often ...
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1answer
29 views

AWS Server 2012 R2, adding clients

I have a AWS machine running MS server 2012 R2. Setting up as a domain controller. I have both public and private IP address associated with the machine. the internal network is on 172.xxx.xxx.xxx ...
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2answers
20 views

Single Domain Controller FSMO holder DR

We are looking at the topic of DR at the moment and I would like your expert help in the creation of a DR plan in the event that our PDC somehow goes kaput! Info: Our PDC holds all FSMO roles We have ...
2
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1answer
81 views

Which server should be the Exchange 2013 DAG Witness Server?

Imagine a standard setup with an Active Directory Server, 4 Exchange servers ( 2 with CAS roles, and two with Mailbox roles) with load balancing and failover. This site talking about how putting the ...
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2answers
56 views

Wrong time on Domain Controller running as guest on Hyper-V

As stated in the headline our Domain Controller runs on Windows Server. This server is a Hyper-V Guest. The Hyper-V Host is joined to the Domain. Unfortunately the Time on the Domain Controller is ...
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1answer
37 views

Determine usage of UPN for logon inside MS AD forest / domain

maybe somebody can give me a hint on this. I am evaluating the prerequisites for changing all (human) user's UPN in a large Microsoft AD environment to the recommended MS format (aligned with the ...
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1answer
39 views

AD - transfer operation master

Our environment has two domains under the same forest, and two way trust been setup between these two domain (sorry, i'm not very savvy about AD, might be using wrong terminology. I try to be as ...
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1answer
37 views

Joining a window domain - DNS resolve

My computer is joined to a Window domain named "acme.local". However when I login into the computer, I only specify acme\username --> notice ".local" is not specified and not ...
2
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1answer
51 views

In Active Directory is it possible to specify which domain controller authenticates user?

I am troubleshooting why a user keeps getting locked out & think the issue might be on the Domain Controller. I've cleaned up lingering objects using the Lingering Object Liquidator but the issue ...
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0answers
43 views

2008r2 Domain: net view error 6118 on one site

Situation: Domain Level 2008r2, all DCs 2008r2 Site A: 3 DCs, no WINS, Computerbrowser Service not active - net view works (on clients and DCs) Site B: 2 DCs, no WINS, Computerbrowser Server not ...
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3answers
129 views

AD Dynamic DNS Updates not triggering on clients

The problem Recently the computers at our organization moved to a new AD domain, due to a merger. We are having problems getting the clients to dynamically register their DNS records in our ...
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1answer
88 views

Install DHCP failover on domain controllers vs member servers?

What is the recommendation for installing DHCP failover; domain controllers or member servers? I can't seem to find any recommendations either way. I did find an old question here pertaining to ...
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1answer
36 views

Replication issue on all 3 domain controllers

We have 3 domain controllers in server 2012. Replication is failing miserably. Repadmin /replsummary dc1 rpc server not available dc 2 rpc server not available dc 3 "Insufficient attributes were ...
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1answer
76 views

PC's think its on a domain

We have a Windows Server 2012 R2 setup here - Its setup with Active Directory & Exchange and is also a Domain Controller: We have 3 machines that are also on this domain, a Windows 7, 8.1 & ...