Solved: Windows detected IP address conflict windows 11/10

Did the Internet connection not working on Windows 11 and Getting error Windows has detected an IP address conflict. This error usually means that two or more devices on the same network have been assigned the same IP address, leading to conflicts in data transmission. This article explores in detail What’s an IP address Conflict and How Do You Resolve It and restore internet access on your PC.

This error usually means that your IP address is already in use within the network. Release and renew your IP address fix the problem on your computer.

Understanding IP Address Conflict

In a computer network, An IP address is a unique way to identify your computer when connected to a network. And each device has a different IP address make it simple for the network to differentiate them. If due to some reason two devices on the same network sharing the same IP address, the network won’t be able to differentiate between them. This conflict can prevent proper communication between devices and cause internet connectivity issues.

Why does IP address conflict Occur?

This IP address conflict error mostly occurs on local Area networks. As we create local area connections to share resources files, folders, and printers on different computers. Local networks are created in two ways by assigning a static IP to each computer and by configuring Dynamic Host Configuration Protocol (DHCP) server to assign IP addresses automatically to each computer within a specific range.

Since two computers cannot have the same IP address, how does the duplicate IP error occur?

• It can happen due to manual IP assignment, If two or more users assign the same IP address to their devices, a conflict arises.
• Due to a bug or conflict, DHCP server fails to properly manage IP address assignments and result IP address conflict.

• Network misconfigurations, such as duplicate IP address ranges or overlapping subnets, can also result in IP address conflicts.

Resolve IP Address Conflict On Windows 11

Restart your computer and network device, and Release and renew your IP address using the command prompt best way to fix the problem and restore internet access on Windows 11.

Restart Router and computer

Let’s first restart your router and Windows 11 Device. It clears the cache, reestablishes connections, triggers DHCP lease renewal, and refreshes the network, resolving configuration and communication issues that may have caused the conflict.

• Press the start menu locate the power icon and select the restart option.
• To restart your router, Locate the power button on your router and turn the device off. Wait a few minutes and Turn your router back on.

Flush DNS and Reset TCP/IP

This is the most effective way to fix ip address conflicts on Windows 11. Releasing and renewing IP addresses allows devices to acquire fresh, unique IP addresses from the DHCP server. This automated process helps manage IP address allocations and resolves conflicts without manual intervention or complex configuration changes.

Press Windows key + S and type cmd, right-click on the command prompt select run as administrator. Now run the following commands

• netsh int ip reset
• Ipconfig /release
• Ipconfig /flushdns
• Ipconfig /renew

The above command reset the TCP/IP settings, Release the current IP address and force DHCP to assign new IP address to your computer and flush the DNS cache.

Now try accessing the internet on your computer, and check if there is no more IP conflict occurring on Windows 11.

Configure DHCP for Windows

This is the most effective solution I personally found to resolve IP address conflicts on Windows 11. If you are using a static IP Address (manually configured) then change it, and configure Windows 11 to obtain an IP address automatically from DHCP. It communicates with the DHCP server to receive a unique IP address.

• Press the Windows key + R, type ncpa.cpl and click ok to open network connections.
• Right-click on the network connection you want to configure and select “Properties.”
• In the Properties window, scroll down and select “Internet Protocol Version 4 (TCP/IPv4).” Click on the “Properties” button.
• In the new window, make sure the options for obtaining an IP address and DNS server address automatically are selected.
• Click “OK” to save the changes, restart your PC and check if the IP conflict issue is fixed and the internet access is restored.

Disable IPv6

Again Some users report Disable IPV6 to help them to resolve this IP Address conflict error message. You can do this by following below.

• Press Windows + R, type ncpa.cpl, and press enter key.
• On the network, connection window right-click on the active network adapter and select properties.
• on the new popup window uncheck IPv6 as shown image below.
• click ok to apply and close the current window and check the problem is resolved.

Update Network driver

Again Updating your network driver can help resolve network-related issues, such as IP address conflicts, by providing bug fixes, performance improvements, and enhanced compatibility. This compatibility helps prevent conflicts and ensures smooth network connectivity.

• Right-click on the Start menu select device manager,
• Expand the network adapter, Right-click on your network adapter and select “Update driver” from the context menu.

• Choose the option to search automatically for updated driver software.
• Windows will search for the latest driver version online and install it if available.
• And finally, restart your computer to ensure that the changes take effect.

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