Fix IP conflict error on computer, unable to access the network due to IP conflict

IP conflict errors on computers are not rare, with large computer networks with a large number of computers accessing them. Furthermore, setting up the model without clearly defining the region and IP address can easily cause IP conflicts, overlapping IPs, making the computer unable to access the network. In this case we need to change the IP address for 1 of the 2 duplicate machines and of course the problem does not just stop at changing the IP address to fix the problem. In this article TipsMake will show you common cases and errors as well as ways to fix IP conflict errors on your computer.

Fix IP conflict error on computer, unable to access the network due to IP conflict

Some common error messages when IP conflicts occur:

'There is an IP address conflict with another system on the network': There is an IP conflict with another system on the network
'This IP address is already in use on the network. Please reconfigure a different IP address.': This IP address is already in use. Please set up another address.

Some causes lead to IP conflicts

-Two computers set up the same static IP address.
-A computer sets a static IP address to coincide with an address that has been set by DHCP for another computer in the system.
-Laptop is turned on from sleep state. Meanwhile, another computer is using the IP address that that laptop used before sleeping.
-When a computer has many network adapters, there is a high possibility that the computer will have an IP address conflict with itself.
-When multiple wireless connections are established in the system and DHCP is enabled in more than one device.

Method 1: Refresh IP address

Step 1: Refresh the IP address on the computer using command prompt. Go to  Start  and type CMD .

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Step 2: When the program window appears, type the command to delete the current IP address: " ipconfig /release ". Depending on the number of adapters installed on the device, the system will display different results:

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Note: If the computer sets up a static IP address, the command failure message line will appear: The operation failed as no adapter is in the state permissible for this operation. In this case, skip and move on to Method 2 .

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Step 3: After deleting the old IP address, we will renew the IP address by entering the command: " ipconfig /renew "

The new IP address will appear in the IPv4 Address line .

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Method 2: Reset static IP address

When the computer uses a static IP address, you can manually switch to a new IP address that does not overlap with other computers in the system, using DHCP to let the system automatically establish a new IP address.

Step 1: Go to Control Panel => Network and Sharing Center . In the left column, select Change adapter settings .

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Step 2: Right click on the network that the computer is using. Select ' Properties '.

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Step 3: In the window that appears, select Internet Protocol Version 4 (TCP/IPv4)  and then press the Properties button .

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Step 4: Here, you can choose to let the system automatically obtain a new IP address from the DHCP server (select Obtain an IP address automatically ) or automatically fill in a new static IP address (select: Use the following IP address ).

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If you don't know how to set up a static IP yourself, you should let the system automatically set up a new IP. DHCP will automatically detect available IP addresses and assign the computer an address that is not in conflict.

If you have tried both of the above methods and still cannot connect to the network, the problem most likely lies with the router.

Method 3: Wireless Router

One of the simplest ways to resolve IP conflicts is to restart the wireless router.

When the router is turned on continuously for weeks or months at a time, errors will arise. Restarting the router helps resolve most errors encountered. After restarting the router, restart your computer as well.

More rarely, errors occur with the DHCP server when it gives computers identical IP addresses. In this case, it is best to upgrade the router's firmware. Most computer users never upgrade router firmware, so IP conflicts can easily occur. Installing firmware is not simple, but if you are a tech person, you should try it once to refresh your longtime router.

Above, TipsMake has shown you how to fix IP conflicts on your computer, helping you change the new IP address to be able to join the network. To learn about the network, we need to have time and effort as well as a certain amount of research. For example, how to configure TCP/IP using CMD, a tool frequently used to install and configure computer networks. If you want to update your network knowledge, you can see how to configure TCP/IP using CMD to supplement your knowledge. AND if your IP network has too many problems, you can restore it to its original state if you use Windows 10. For more information, please read the article on how to reset the network. Initial state after changing IP.

Marvin Fry

Update 15 June 2024