Force synchronization for DFSR-replicated SYSVOL

One of my clients had a problem with processing GPO on client computers. Different computers applied different settings from the same GPO but from different domain controllers. All tests related to replication was successful, all GPOs are applied, but replication between domain controllers was a problem, and because of that most clients had a different … Read more

Get Primary, Secondary, Tertiary DNS values and more from Multiple Servers

Came across a unique request to get primary, secondary, and tertiary DNS values for multiple computers/servers across the domain. I started writing the script and got what I wanted. Now this started off as just to query for DNS Server information, but then I thought to add other pieces to get myself a good Network … Read more

Fix Active Directory broken security inheritance problem

Ran into a situation at a client location where in Active Directory, the security permissions applied to an OU were not getting inherited permissions on to the objects. Basically, security inheritance was broken.This causes a problem when the administrative accounts or groups needing to modify an attribute on the AD object throw errors, or are … Read more

NSLookup still showing IP of demoted Domain Controller

So had an interesting issue today where a Domain Controller (DC) was demoted yet the IP of the demoted DC was still showing up when running nslookup internaldomain.local Demoted DC: MWDC04 / IP: 10.14.111.111 I had done the metadata cleanup and tried many suggestions when googling the subject. To my surprise none of the solutions I … Read more

Speed up Active Directory & DNS replication between Sites

Using the standard GUI Microsoft Management Consoles to make the change to speed up Active Directory replication is not possible. The best result of using administrator consoles will be to increase domain replication between domain controllers to 15 minutes. These large time values were instituted into Active Directory at version 1 because inter-site connections during that era of computing and networking were much lower in bandwidth with the most common being frame-relay or … Read more

The Lazy Way To Do Active Directory Inventory

From time to time admins have to run an inventory of what is running in the AD environment. This is a good practice for audits, inventory, removing decommissioned servers, or any other good reason. The details that are required are like when was computer/ server created, when was it last logged into, what is the … Read more

Adding a security group to the Local Administrator Group in AD

Having a local administrator of your workstations can come in handy. Sometimes you might need to logon locally to troubleshoot or rejoin a computer to your domain. You can create a group policy that creates a local admin users and sets the local password. Admins make a common mistake when they want to add a … Read more

Connecting to a remote domain controller using PowerShell

Covering one of the basic day to day task if you are a Windows Administrator; connecting to the domain controller.  I try to minimize logging onto servers as much as possible.  Your thought should be around connecting to the server remotely and doing the work as needed instead of natively logging on to it. I … Read more