How to Fix an IP Address Conflict in Windows 11

An IP address uniquely identifies your device on a network, enabling it to send and receive internet traffic properly. Like a postal address, it ensures that the information you request online reaches the correct destination. However, when two devices on the same network are assigned the same IP address, an ‘IP Address Conflict’ occurs, disrupting network communication on those devices.

IP address conflicts can be a temporary glitch or stem from a specific configuration issue. Regardless of the cause, resolving this error is usually straightforward. In this guide, we’ll explore several methods to fix IP address conflicts on your Windows 11 computer.

How does an IP address conflict occur?

There are primarily two ways a device obtains an IP address: dynamically via DHCP (Dynamic Host Configuration Protocol) from a router, or through a manually assigned static IP address. DHCP automatically assigns unique IP addresses to devices on a network, while static IP addresses are manually configured and remain constant.

An IP address conflict often arises when a device with a static IP connects to a DHCP-enabled network without reserving that IP address on the router. The router may inadvertently assign that same IP address to another device, causing a conflict. Additionally, assigning the same static IP address to multiple devices or a router malfunction can lead to this issue. Sometimes, a device waking from a long sleep or hibernation can cause a conflict if its IP lease has expired and been reassigned.

Now, let’s look at effective methods to resolve IP address conflicts on your Windows 11 PC.

Method 1: Renew Your IP Lease

Releasing and renewing your computer’s IP address can quickly resolve an IP address conflict. This process forces your device to request a new IP address from the router, eliminating any conflicts with other devices.

Open the Command Prompt with administrative privileges. Click on the Start menu and type Command Prompt in the search bar. Right-click on the Command Prompt app and select Run as administrator.

If prompted by the User Account Control (UAC), click Yes to grant permission.

In the Command Prompt window, type the following command and press Enter to release your current IP address:

ipconfig /release

Next, type the following command and press Enter to request a new IP address:

ipconfig /renew

After executing these commands, your computer should obtain a new IP address from the router, resolving the conflict.

Method 2: Disable and Re-enable Your Network Adapter

Sometimes, simply disabling and then re-enabling your network adapter can fix the IP address conflict by resetting your network configuration.

Open the Control Panel. Click on the Start menu, type Control Panel, and select it from the search results.

In the Control Panel, set the View by option to Large icons.

Click on Network and Sharing Center.

On the left sidebar, click on Change adapter settings.

Right-click on your network adapter (either Wi-Fi or Ethernet) and select Disable.

Wait a few moments, then right-click on the adapter again and select Enable.

After re-enabling the adapter, your computer will reconnect to the network, and the IP address conflict should be resolved.

Method 3: Restart Your Router

If multiple devices are experiencing IP conflicts, restarting your router can help by refreshing the network and assigning new IP addresses to connected devices.

Locate the Power button on your router, usually found at the back.

Press the Power button to turn off the router, and switch off the power outlet.

Wait about two minutes to allow the router to shut down completely.

Turn the router back on by pressing the Power button and switching on the power outlet. Alternatively, you can restart the router through its web interface.

Open your preferred web browser and navigate to your router’s IP address, typically 192.168.0.1 or 192.168.1.1.

Log in with your router’s credentials (often found on a sticker underneath the router). Step 7: Navigate to the System Tools or System section.

Find the Reboot option and click on it.

Confirm the reboot by clicking on the Reboot button.

After the router restarts, it will reassign IP addresses to all connected devices, which should fix any IP address conflicts.

Method 4: Remove Static IP Settings

If your computer has a manually assigned static IP address that conflicts with another device, removing or changing it can resolve the issue.

Open the Control Panel by clicking the Start menu and typing Control Panel.

Set the View by option to Large icons.

Click on Network and Sharing Center.

Click on Change adapter settings.

Right-click on your network adapter (Wi-Fi or Ethernet) and select Properties.

In the list, double-click on Internet Protocol Version 4 (TCP/IPv4).

Select the option Obtain an IP address automatically and ensure Obtain DNS server address automatically is also selected.

Click OK to apply the changes. Your computer will now obtain an IP address dynamically from the router, which should resolve any conflicts.

Method 5: Disable IPv6

In some cases, disabling IPv6 can help resolve IP address conflicts, especially if your network primarily uses IPv4.

Open the Control Panel and click on Network and Sharing Center.

Click on Change adapter settings.

Right-click on your network adapter and select Properties.

In the list, uncheck the box next to Internet Protocol Version 6 (TCP/IPv6).

Click OK to apply the changes. Disabling IPv6 can alleviate IP conflicts in certain network setups.

Dealing with an IP address conflict can be frustrating, but these methods should help you resolve the issue on your Windows 11 PC. By renewing your IP lease or adjusting your network settings, you can restore your connection and get back online quickly.