Internet Protocol address or the IP address is the unique number assigned to each hardware which is connected to a network. In other words, this figure gives each device in the network an identification and allows it to connect and communicate with the other devices.
Now network communication occurs seamlessly as long as the IP address is unique, as they are supposed to be, but an IP conflict issue arises the moment the two end-points of communication have the same IP address. These endpoints can be PC’s, mobiles or even network adapters. As a result of such conflicts, one or both of the communication endpoint is rendered useless for network operation.
If the operating system is Microsoft Windows, then the resultant error on your screen depends on the device type that has been affected by the problem and also the running network system of the device.
The static IP address that was just configured is already in use on the network. Please reconfigure a different IP address.
This is the message that appears on Windows when the local network already has a device active with the same IP address as used by you.
There is an IP address conflict with another system on the network.
The newer Microsoft versions produce this error message as the pop-up balloon for dynamic IP users with conflicts.
Windows has detected an IP address conflict.
This was the error message in the oldest Microsoft versions and remains the same in certain conflict cases in the newer versions.
Whatever the error message is, you need to find a solution to the problem to use the device on the internet again. Since the nature of the problem, causing the conflict can be different. Hence the answer has to be different too. Here we discuss various methods on how to fix the ‘Windows has detected an IP address conflict’ error:
Solve Windows has Detected an IP Address Conflict
Router Restart or Ethernet disconnection
Although it may seem a bit primitive, sometimes a simple restart of your router may just solve the problem. This may work because at times the router cannot assign a suitable IP to the device connected with it. Hence upon restarting the entire power cycle and reconnecting the device to the router, the router can just assign the proper IP address, and the problem may get solved.
If you are using an Ethernet connection, simply disconnect the cable and reconnect after some time.
When restarting the router does not work, it is usually a problem with your PC. In this process, you will have to use the command prompt to get a new IP assigned to your computer by your router. In the command prompt, the following commands need to typed and entered one after another to execute the solution:
netsh int ip reset c:\resetlog.txt
NOTE: to run the Admin Command Prompt, just type cmd in your start menu, right click on the top search result and right click to choose the option of ‘Run as administrator.’
DNS Flushing and Resetting TCP/IP
This is a more complicated solution but is an almost sure shot way to solve the IP conflict issue using the Command prompt with administrator access. Here, the following commands need to type into the Command Prompt (Admin), and press enter after each one of them:
Finally, ‘ipconfig /renew’
After entering this close and reopen the Admin Command Prompt to enter the following commands one after another: (hitting enter after each one)
netsh int ip reset c:\resetlog.txt
netsh Winsock reset
Restart your computer to check if the problem has been solved.
Removing Static IP
Users sometimes tend to use a Static IP to ensure that is easier to find a device in a network, but this often creates the problem of an IP clash, thus making it inevitable to use a dynamic IP.
For this method, open your Control panel and go to the Network Connection page. If you are using a router, then you will see the Wi-Fi connection or the Local Area Connection for LAN connections. In both cases, right click on the icon to open the properties box and double click on the option of Internet Protocol Version 4(TCP/IPv4).
In the resultant box, select both- Obtain an IP address automatically and Obtain DNS server address automatically options and close the box by pressing OK. Upon restarting the computer, the problem should be solved.
NOTE: By pressing the Windows key + R key together, the Run dialogue box will open in which the command of ncpa.cpl automatically opens the Network Connection option of Control Panel.
Using external software
Sometime the issue may be due to some missing or corrupt files in the system, which can be corrected using external softwares. One such software is Reimage Plus Software which scans the computer thoroughly to detect and replace the required files thus solving the IP address conflict issue.
IPv4 and IPv6 are two version of IP that is available for devices to use. But some devices may not be compatible to run with IPv6. In these cases, you need to disable the IPv6 using these following steps:
By opening the Properties box of the network connections using the method mentioned earlier, find the Internet Protocol Version 6 (TCP/IPv6) option. You merely have to uncheck this box and press OK to save and exit.
People should use VPN as it provides online privacy, but sometimes this can be the cause of IP conflict errors. This issue often occurs, when we use the device after Sleep Mode as the VPN usually closes in the Sleep Mode. In this case, restart your machine and reconnect the VPN to solve the issue.