How to Repair ‘Windows has Detected an IP Address Conflict’ on Windows PC

An IP address is a unique way of identifying your computer when it connects to a network. Each device has a different IP address, so the network can easily tell them apart. If you get the error message “Windows has detected an IP address conflict”, it means that your IP address is already in use on the network. All private IP addresses must be unique, otherwise, complications can arise.

For example, if you connect a PC, a laptop, and a smartphone to the same network, there should be three different IP addresses. However, if two such devices have the same IP address, it is almost impossible for the network to distinguish them from each other. You must solve this problem as soon as you receive the message. Conflicting IP addresses can cause complications when using the network. See our guide on how to get rid of this error message.

How does an IP conflict occur

Most often, IP address conflicts occur when you assign static IP addresses to your network. Instead of DHCP automatically choosing an address for all devices, you can use a static IP address to set a specific IP address that the network device will always use. If you mistakenly assign the same static address to two devices, an IP duplication error will occur. This problem can also occur if you assign a static IP address to a device without reserving that address in the router. Eventually, your router will try to assign that address to the other device, creating an IP conflict.

Another IP conflict scenario can occur if you have two DHCP servers on your network (which you should avoid). For example, you might have your own wireless router connected to your ISP’s modem and router. If both devices are trying to act as routers, they may assign duplicate IP addresses. Finally, you can inject duplicate IP addresses into the network when the computer returns to the network after idle mode.

How to resolve IP address conflicts

Restart router

Check your router

Follow these simple steps to restart your router on Windows 10:

  1. Click the Start Menu and search for “Control Panel.”
  2. Select “Network and Internet.”
  3. Click “Network and Sharing Center.”
  4. Click “Change adapter settings.”
  5. Right-click on your network adapter and select “Disable.”
  6. Wait a few seconds and then right-click on your network adapter and select “Enable.”
  7. Close the Network and Sharing Center window.
  8. Restart your computer.

These steps should restart your router and get you back online in no time.

Release and renew an IP address

In order to release and renew an IP address on Windows 10, there are a few steps that need to be followed.

  1. First, open the Command Prompt by searching for it in the Start menu.
  2. Once the Command Prompt is open, type in ‘ipconfig /release’ and hit Enter. This will release your current IP address.
  3. Next, type in ‘ipconfig /renew’ and hit Enter again. This will renew your IP address with a new one.
  4. Finally, close the Command Prompt window.

These steps should help you to release and renew your IP address on Windows 10 without any issues.

Update network card driver

In order to update the network card driver of Windows 10, please follow the steps below:

  1. First, open the Device Manager by hitting the Windows key + X and then selecting “Device Manager” from the menu that appears.
  2. Scroll down to the “Network Adapters” heading and expand it by clicking on the arrow to its left.
  3. Right-click on your network adapter and select “Update Driver Software…” from the context menu that appears.
  4. Select “Search automatically for updated driver software” and Windows will now try to find and install the latest driver for your network adapter.
  5. If no new driver is found, you can also try manually installing it by downloading it from the manufacturer’s website and following their instructions.
  6. Once you have updated your network adapter driver, restart your computer for the changes to take effect.
  7. You have now successfully updated your network adapter driver.

Run hardware and device troubleshooter

If you’re having trouble with your hardware or devices, Windows 10 comes with a built-in troubleshooter that can help you identify and fix the problem. Here’s how to run it:

  1. Type ‘troubleshoot’ in the search bar and click on the first option that appears.
  2. Select ‘hardware and devices’ from the list of options.
  3. Click on ‘run the troubleshooter’ and follow the instructions that appear on the screen.
  4. Once the troubleshooter has finished, restart your computer and check if the problem has been resolved.

Run network adapter troubleshooter

If you’re having trouble connecting to the internet, one of the first things you should do is run the network adapter troubleshooter. This built-in tool can help you identify and fix common problems with your network connection. Here’s how to run the network adapter troubleshooter in Windows 10:

  1. Open the Settings app by pressing the Windows key + I on your keyboard.
  2. Click on Update & Security.
  3. Click on Troubleshoot in the left-hand menu.
  4. Under “Find and fix other problems,” click on Network Adapter.
  5. Click on Run the troubleshooter.
  6. Follow the prompts to diagnose and fix your network connection problems.

If you’re still having trouble after running the troubleshooter, you may need to update your network drivers or contact your ISP for help.

Frequently Asked Questions

If you set a static IP address for a network device, there may be IP address duplication conflicts on the DHCP network. See details. To solve this problem, convert a network device with a static IP address into a DHCP client. Or you can exclude a static IP address from the DHCP range on the DHCP server.

Assigning a static IP address can be done manually. An IP address conflict occurs when the person who assigned static IP addresses may have overlooked the addresses in use and assigned similar addresses to multiple devices.

Windows describes the cause of this error abstractly in a network error message as follows: "Another computer on this network has the same IP addresses as this computer." This means that your device has an IP address conflict with another device or host on your network.

Because of this structure, no two devices on the network can have the same IP address. If this happens, the network gets confused with duplicate IP addresses and cannot use them properly.