How to Fix an IP Address Conflict

By Jim Campbell

IP addresses are assigned to network cards.
i carte réseau image by François Roche from

Every internal network only allows for one IP address per computer. IP addresses are static or dynamic. A dynamic IP address is controlled using a Dynamic Host Configuration Protocol (DHCP) server. A static IP address is manually configured on the user's machine. If an IP address causes a conflict, the administrator can renew the IP from the DHCP server or give the computer a new static address. These two options fix the conflict errors on the network.

Dynamic IP

Step 1

Click the Windows "Start" button and select "Run." Enter "cmd" into the text box and click "OK." This opens the Windows command prompt.

Step 2

Enter "ipconfig /renew" in the command prompt to refresh your dynamic IP address. Press "Enter."

Step 3

Open your network connection. Because the DHCP server manages IPs, it gives your computer an available IP address that isn't already taken on the network. The next time you access network resources, you no longer receive the IP conflict area.

Static IP

Step 1

Right-click "Network Neighborhood" on your desktop. If you have Windows Vista or Windows 7, the icon is labeled "Network." Select "Properties."

Step 2

Right-click your network card and select "Properties." For most users, the network card is labeled "Local area LAN Connection."

Step 3

Click "TCP/IP" in the list of protocols. Click the "Properties" button underneath the list of protocols. Enter a new IP address in the opened window.

Step 4

Click "OK" to confirm your settings. You can now browse the network without the IP conflict error.