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

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How do I fix a non-starting “Microsoft Key Distribution Service”? (not to be confused with Kerberos KDS)

The Microsoft Key Distribution Service is not starting on my DC (kdssvc.dll) and when I look at the event log under Microsoft\Kdssvc, I see the events: Event ID 4001 Group Key Distribution ...
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253 views

Samba4 internal DNS and isc-dhcp zone update

Could anybody explain, how to solve this problem with internal samba4 DNS and dynamic zone updates from isc-dhcp? In the logs I have: dhcpd: Unable to add reverse map from 170.5.168.192.in-addr....
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291 views

Exchange 2013 and AD/GC issues

I have Exchange 2013 (minimal install and all roles are on a single server) on-premises running on a Windows 2012 R2 server (both Windows and Exchange are patched and up-to-date). Basically this ...
3
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740 views

Error getting the list of sites from the target environment: An invalid dn syntax has been specified

Trying to add another (second) Domain Controller to an existing Domain. In the second step of "Active Directory Domain Services Configuration Wizard" getting the following error: Error getting the ...
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33 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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67 views

Slow response time when using ADUC utility to search a trusted domain

Current Setup: I have child 2 domains, one in America (amer.domain.com) and one in Asia (asia.domain.com) in the same forest. Both domains are connected via MPLS links. In each physical site, there ...
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5k views

AD Replication Errors / KCC - Between two Domain Controllers

I'm having quite an issue that began a few days ago. Let me just lay out exactly what happened - also I've inherited this environment, please keep that in mind. 1st Domain Controller - Windows ...
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4k views

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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290 views

Session limit exceeded on domain controller?

I have a Server 2003 machine that runs a number of scheduled tasks as a particular domain user. Every couple of weeks, the user seems to lose its home directory (normally C:\documents and settings\...
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2k views

Domain Admins do not have Administrative rights on Windows Server 2008 using Samba PDC

Members of Domain Admin using CentOS Directory Server as backend do not have Admin rights in Windows Server 2008. I have joined the domain, see that the users are populated, and can login using LDAP ...
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241 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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331 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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51 views

DC's on separate sites, VPN connection, gateway change - can't see each other

Ok I had a working setup and I know what the issue is but just asking if simple way to fix. Two offices each with DC on different IP ranges, 160.0.1.x and 160.0.2.x. The VPN goes to a router 160.0.1....
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867 views

Send message to all logged in clients in active directory from windows server 2008

Hello I'm wondering how i can notify ALL my users that is currently logged in on their client computers that there will be a maintainance and such? the msg command does not work for me i've tried. ...
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93 views

samba authentication issue for one specific user account

I'm facing a pretty annoying issue with Samba. Here is my setup: Windows Server 2003 + Active Directory (users authentication) NAS Server (Ubuntu 12.04 + PBIS Open Broker so this NAS is registered ...
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58 views

SMB server's behavior under NT Domain and Active Directory Domain

(1) If SMB server joined to the NT Domain, does the SMB server itself executes a user authentication by communicating to a Domain Controller? To do it, does SMB client need to send a Type3Message ...
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18 views

Domain Controller Roles not properly configured

I added a W2008R2 domain controller to a domain which previously had two W2003 domain controllers. I want to demote and remove the W2003 server that held the primary roles. I successfully ...
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35 views

Windows domain controller errors

I got the following errors when enquiring two domain controllers. Cannot open security log for DC DC2.org - The interface is unknown. and OpenEventLog failed for DC DC2.org(10.126.2.6) - ...
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189 views

How to use Group Policy to control local administration access (LOCAL ONLY)

At the company I work for, we have about 75 computer users. We have a Microsoft Domain Controller in our server environment (MS Server 2012) with Active Directory. When users need to install software,...
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193 views

Domain time drifting with VM DCs / host domain members

I'm following the advice given in this article: http://technet.microsoft.com/en-us/library/virtual_active_directory_domain_controller_virtualization_hyperv(WS.10).aspx#...
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249 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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31 views

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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112 views

how do i test my DC backups

I have several system state backups of my domain controller 2008r2 stored on a network location. I am wanting to build a test environment so I can practice recovering a domain controller and also to ...
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1k views

Mysterious kinit-failure on Debian Jessie

I have a machine with the Samba 4 AD and the second as a client. After two days of good operation, suddenly the kinit stopped working on the client-side. The reason is quite mysterious. It cannot ...
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446 views

Windows XP cannot join (samba) domain

I've a setup with Samba 3.4.7 on Ubuntu 10.04 running as Primary Domain Controller for the network. [Almost] everything works fine, except for a single Windows XP computer which cannot join the ...
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144 views

Limiting users to logging onto Samba domain only from specific machines

I have Samba setup and running nicely as a primary domain controller with roaming profiles. Currently users can log on to the domain controller from any machine in the network. However, I want to ...
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91 views

Install DC again after removing on exchange server

I had a DC and Exchange 2010 installed on the same machine. I removed the DC role, and Exchange server went crazy. I tried to install the DC role again to fix the problem but ran into this error when ...
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126 views

Websites (IIS 7.0) unavailable from Internet upon rebooting 1 out of 4 DCs

What happened: We had to reboot one of our Domain Controller (DC), located on the VLAN 1 for maintenance purpose. We have a total of 4 DCs on 3 VLANs, so we thought that wouldn't affect our ...
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853 views

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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4k views

Windows Server 2008 R2 DC can't ping to other computers except other DC

I have been trying to troubleshoot this problem since 20 hours ago, and still can't find a solution. I brought down (orderly shutdown) a Domain Controller yesterday. No problem at all connecting to ...
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433 views

LSA Cache Entries - NTLM versus Negotiate Windows Authentication Providers

We have a situation, due to a recent employee name change, where the HttpContext.Current.User.Identity.Name property of an ASP.NET web application resolves to the old username. This has been ...
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3k views

Certificate enrollment for Local system failed to enroll Event ID:13

I've just finished installing a second domain controller to gain redundancy in the network. (and to solve some issues) After installation and configuring all errors are gone but one that is: Event ...
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286 views

Merge two samba PDC and do master slave keeping data on two servers

I need to do a very difficult thing. I have this situation: 1) server A , with zentyal as samba PDC, 500 users in his ldap. Each user has an home that is mapped to H: . Several computers are ...
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450 views

Where to get some generic ruleset for the firewall of a domain controller?

I've blown up the firewall rules on a domain controller (DC). Since there are no restore points in Windows 2008 and restoring everything from a full backup is not a solution in this case, how do I: ...
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984 views

unable to logon because of account restriction on Domain Controller

I have a Domain Controller which had installed RSA SecurID software Few months ago we switched from RSA SecurID to Gemalto smart cards. This DC was the last machine with RSA software installed ...
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4 views

Windows 10 Connect to Disconnected user session without password as Domain Admin

I have a Windows 10 PC (Virtual Machine) on a domain and a domain user logged in to it (albeit disconnected). This user has started some applications that have caused a massive consumption of network ...
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65 views

The schema master did not complete a replication cycle after the last reboot

I'm attempting to add a Windows Server 2012 Domain Controller to an Existing Windows Server 2003 network, and then following that, will migrate it to be the domain master. I'm following this tutorial ...
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84 views

Suddenly i can not join Windows clients to Samba PDC anymore

Some years ago i configured a Primary Domain Controller through Samba and LDAP (slapd) on an Ubuntu machine (13.10) at 192.168.69.203 which should be accessible by the NetBIOS name SRV1. I must note i ...
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33 views

How to get remote users to authenticate?

We have some remote users who are rarely on the company LAN. They may be remote for six months or more during a year. Every so often we encounter the problem of errors like: "There are currently no ...
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38 views

Design Recommendation to Future Proof Active Directory

We are currently setting up the first Active Directory for a business within a brand new private equity group. This private equity group owns 4 businesses and will be acquiring many more. I ...
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98 views

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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17 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
14 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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92 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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24 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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0answers
15 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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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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31 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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77 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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18 views

Error after restore DC

Yesterday , 1 DC in small brach can't boot in Windows . I tried many methods but still can't boot . So i decided restore partition C from 1 week ago-backup version.I restored system state ( not full) ...