Introduction

Integrating a new Domain Controller (DC) into an existing Active Directory (AD) environment is a critical task for IT administrators. Utilizing PowerShell streamlines this process, offering efficiency and precision. This guide provides a detailed walkthrough for adding a DC to your AD domain using PowerShell, ensuring a robust and secure network infrastructure.

Prerequisites

Before proceeding, ensure the following conditions are met:

  • Domain Functional Level: Verify that your domain functional level supports the addition of a new DC. For Windows Server 2025, the domain should be at least at the Windows Server 2016 functional level. Use the following PowerShell commands to check:
CODEBLOCK0 powershell

Get-ADDomainController -Filter * | Select-Object Name, IPv4Address, OperatingSystem

```

This command lists all domain controllers, confirming the addition of the new DC.

Conclusion

By following these steps, you've successfully added a new Domain Controller to your Active Directory environment using PowerShell. This method enhances efficiency and ensures consistency in your network's configuration.