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

Convert a Dynamic IP to Static

Working on a project where on some servers the DHCP assigned addresses needs to be converted to static. Since there is always more than one…I needed to script it. Here is a quick way to do it via PowerShell.

Hope this helps!

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

DNS broken after Windows Update KB3145126

I noticed the DNS broke on my servers after Windows Update. The problem was KB3145126. Read more about it here. After a quick removal and reboot, DNS was operational again. To remove/uninstall KB3145126, open powershell and run the following:

Hope this helps.