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Questions tagged [domain-controller]

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

In Microsoft Active Directory and NT4 domains, a domain controller is the central repository for all of the user account authorization information. It allows a person to sign on once and be allowed access to many different resources.

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What's the downtime limit of a domain controller (DC)?

On my VMware ESXi environment there are 10 VMs running. One of the VMs is the domain controller (Windows Server 2008 R2). The other VMs are configured with a static DHCP and DNS IP address in their network settings. How long is the downtime limit of…
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Can a Server Foundation 2012 machine serve as a backup domain controller to a machine running Server Foundation 2008?

In this particular context we have a small business (10 user office) looking to establish a Domain setup. There is already one machine running Server Foundation 2008. If that machine is selected as Domain controller can we purchase another running…
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Veeam backup of Domain Controllers

Is it safe to backup and/or replicate a Domain Controller (Win2003 & Win2008) using Veeam Replication & Backup 7? I am aware of the Application Aware option in Veeam. We can enable, but I can't find official documentation saying that that's enough.…
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Is a gradual migration from a workgroup to a domain possible?

I have a small setup of around ~30 computers [some of which are located at a remote office] that I need to get migrated over from a workgroup to a domain to maintain my sanity. The previous admin didn't mind managing things this way, but keeping…
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"Server Manager -> Configuration -> Local Users and Groups" is not available in Windows Server 2008 R2

I'm trying to follow instructions from this page, but I can't seem to find Server Manager -> Configuration -> Local Users and Groups. Here's what I get: What am I missing there?
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Do you need a GC online to DCPromo?

We've inherited a customer who after auditing their site turns out they used to have a site-to-site VPN and another DC at the endpoint (which was the only GC in the forest). THe previous IT company demoted this, cleaned up AD, but never made their…
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Why shouldn't a domain controller use itself as its primary DNS server?

According to various sources, it's considered a best practice to configure a domain controller to use another DC as its primary DNS server, and itself as the secondary one. However, according to other sources, the reverse is true, or should at least…
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Can I use Windows 8 clients with a Windows 2008 R2 Domain Controller?

I'm sure I can, but are there any incompatibilities or problems to be aware of? We have a domain controller with a few Windows 7 clients already. It is working fine. I had the idea to install Windows 8 on a client and use it in the domain. One of my…
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Active directory member servers cannot locate domain controller

Several hours ago, a handful of our member servers became unable to authenticate against the two domain controllers they should be using. The member servers and DC are located in the same datacenter, and are on a separate "site" in AD. Running…
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Active Directory delegation best practices

I am in the process of delegating some Active Directory tasks to a group of users. These users do not have domain administration rights and will only perform tasks such as creating/disabling accounts in a single OU. I have two questions: a) In order…
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How to Rebuilt Global Catalog?

I am running two domain controllers in a windows 2003 r2 infrastructure. The main domain controller with the global catalog role went down and I had to reformat it. Now I am facing issues with creating new users in the active directory. I think I…
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ActiveDirectory domain service wizard: Prerequisites check for domain controller upgrade fails

I want to test my software's SSO, so I am trying to configure ActiveDirectory on Windows Server 2012, following this tutorial. At "prerequisites step", the window is supposed to look like: but unfortunately I get an error: Sorry for the Japanese,…
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How to compare Active Directory on 2 Domain Controllers

Our Windows domain has 3 DCs. One of the DCs is replicating changes made on the other DCs but not replicating out any changes made on itself. We have no idea which has the most up-to-date AD so we want to compare the other 2 with the 1 that isn't…
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Adding a windows server 2012 domain controller to an existing windows server 2003 domain fails

I want to add an additional domain controller to our existing domain. Right now we have only have one domain controller running on Windows Server 2003. I tried to promote a Windows Server 2012 to be another domain controller for our domain.…
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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 answer I'm led to believe that there is something…
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