When you can't wait for the update
Force AD replication to all domain controllers
Imagine you have only one door to your house. No windows, no patio door, just one door. What happens if you can’t open that door? The house, and everything in it, is useless to you.
A domain controller is like a door. One with a bouncer. It’s the gateway to get in to the things you want. Active Directory (AD) is the bouncer at the door. It checks your credentials, determines whether you’re allowed through the door, and what resources you can access once you’re in.
If you run a network of any kind and have only one domain controller, you are living in a house with one door. If something happens to that domain controller, your entire server system falls apart. Always have more than one domain controller (DC).
