How to troubleshoot and resolve IP address conflicts on your business network

Summary

This guide helps you troubleshoot and resolve: How to troubleshoot and resolve IP address conflicts on your business network. Follow the steps below to fix the issue.

Common Causes

An IP address conflict occurs when two devices on the same network are assigned the same identification number. This prevents both devices from communicating effectively with the router and the internet, often resulting in intermittent connectivity or a total loss of network access. This guide will help you identify the source of the conflict and resolve it quickly to get your business operations back on track.

Quick Fix Steps

Before diving into deeper configuration changes, try these rapid solutions which resolve the majority of conflicts in small office environments.

1. Restart the affected device: Powering down the device and restarting it often forces the system to request a fresh IP address from the router.
2. Restart your router: Unplug your router from the power outlet, wait 30 seconds, and plug it back in. This clears the DHCP table and reassigns addresses to all connected devices.
3. Toggle Wi-Fi: If the device is wireless, turn Wi-Fi off and then back on again. Ensure you are following the correct steps on How to connect to Wi-Fi.

Detailed Instructions for Windows

If a restart does not resolve the issue, you can manually force Windows to release its current IP address and request a new one using the Command Prompt.

Using the Command Prompt

1. Press Win + R on your keyboard, type cmd, and press Enter.
2. In the black window, type the following command and press Enter: ipconfig /release
   • This tells the computer to let go of its current IP address. Your internet connection will drop momentarily.
3. Next, type the following command and press Enter: ipconfig /renew
   • This requests a brand new IP address from your router.
4. Close the window and check if your connectivity has been restored.

Checking for Static IP Assignments

1. Go to Settings > Network & internet > Advanced network settings.
2. Select More network adapter options.
3. Right-click your active connection (Wi-Fi or Ethernet) and select Properties.
4. Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
5. Ensure Obtain an IP address automatically is selected. If a static IP was manually entered, it may be conflicting with another device on your network.

Detailed Instructions for macOS

macOS allows you to "Renew DHCP Lease" directly through the system settings to resolve address conflicts.

1. Click the Apple Menu and select System Settings (or System Preferences on older versions).
2. Navigate to Network in the sidebar.
3. Select the network service you are using (e.g., Wi-Fi or Ethernet) and click the Details... button.
4. Click on the TCP/IP tab.
5. Click the Renew DHCP Lease button.
6. Click OK to apply the changes.

If you have followed these steps and the conflict persists, please Open a Ticket so our technicians can analyse your network configuration.

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