How to Add a Secondary IP Address to a Windows Server.

This article explains how to add a secondary IP address to a Windows Server using the Graphical User Interface (GUI).

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⚙️ Prerequisites

• You must have Administrator privileges on the server.

⚠️ Note: If your adapter is set to DHCP (Obtain an IP address automatically), the Add option will be greyed out.
You must first convert your adapter to use a static IP before adding a secondary address.

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📋 Step-by-Step Procedure

Step 1 – Open Network Connections

1. Click on the Start Menu → Control Panel.
2. In Control Panel, select Network and Sharing Center.
3. On the left-hand side, click Change adapter settings.
   → This opens the window showing all your network adapters (e.g., Ethernet, Local Area Connection).

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Step 2 – Open Network Adapter Properties

1. Right-click your active adapter (e.g., Ethernet or Local Area Connection)
2. Select Properties

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Step 3 – Open IPv4 Settings

1. Select Internet Protocol Version 4 (TCP/IPv4) from the list
2. Click Properties

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Step 4 – Change from DHCP to Static IP

1. Select the option:
   ⚪ Use the following IP address
2. Enter your current network details (as seen earlier when DHCP was enabled):
   • IP address: (e.g., 192.168.1.10)
   • Subnet mask: (e.g., 255.255.255.0)
   • Default gateway: (as per your network)
3. (Optional) Add your DNS server details
   
   

💡 Tip: You can find these values by running ipconfig /all before disabling DHCP.

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Step 5 – Add the Secondary IP

1. Click Advanced…
2. Under the IP addresses section, click Add
3. In the popup window, enter:
   • IP address: Your new secondary IP (e.g., 192.168.1.20)
   • Subnet mask: (e.g., 255.255.255.0)
4. Click Add, then OK on all windows to save.

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Step 6 – Verify Configuration

1. Open Command Prompt
2. Run: ipconfig /all
3. Under your network adapter, you should now see two IP addresses:
   • Primary IP: 192.168.1.10
   • Secondary IP: 192.168.1.20

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