Adding a computer to a domain is a common task for system administrators managing Windows environments. This process can be streamlined using PowerShell, a powerful scripting language included with Windows. The Add-Computer cmdlet is specifically designed for this purpose, allowing you to join a computer to a domain or workgroup efficiently.

Understanding the Add-Computer Cmdlet

The Add-Computer cmdlet is a part of the PowerShell module that helps in adding local or remote computers to a domain or workgroup. It can also be used to remove a computer from a domain or workgroup. This cmdlet is particularly useful for automating the process in large environments.

Prerequisites

1. Administrator Privileges: Ensure you have administrative rights on the local computer.
2. Domain Credentials: You need a user account with the necessary permissions to add a computer to the domain.
3. Network Connectivity: The computer must be able to communicate with the domain controller.

Example: Adding a Computer to a Domain

Below is a step-by-step guide on how to use the Add-Computer cmdlet to add a computer to a domain.

Step 1: Open PowerShell

• Click on the Start menu.
• Type PowerShell.
• Right-click on Windows PowerShell and select "Run as administrator".

Step 2: Use the Add-Computer Cmdlet

Execute the following command in the PowerShell window:

Add-Computer -DomainName "YourDomainName" -Credential (Get-Credential) -Restart

• -DomainName: Specifies the domain you want to join.
• -Credential: Prompts for domain credentials. A dialog box will appear asking for a username and password with the necessary permissions.
• -Restart: Restarts the computer after joining the domain.

Step 3: Enter Credentials

When prompted, enter the domain username and password. This account must have the rights to add computers to the domain.

Step 4: Verify Domain Membership

After the computer restarts, you can verify that it has joined the domain:

1. Right-click on "This PC" or "Computer" on the desktop or in File Explorer.
2. Select "Properties".
3. Under "Computer name, domain, and workgroup settings", check the domain name.

Additional Options

• -OUPath: Specify the Organizational Unit (OU) in which to place the computer account.
• -PassThru: Returns an object representing the computer.

Troubleshooting

• Network Issues: Ensure the computer can resolve the domain name and communicate with the domain controller.
• Permissions: Verify that the account used has the necessary permissions to join computers to the domain.