Duplicated IP Address can sometimes be annoying. Especially when you did all the troubleshooting steps, it’s still showing your IP address as duplicated. Well, at least that happened to me. Here are the steps to reset the ARP count so that when you restart a computer, it will refresh the ARP table and not mark that IP address as a duplicate.
First, open your regedit.exe program. Then go to the following registry key
Second, create a DWORD (32-bit) value with the name ARPRetryCount and the data 0.
That’s it. You can restart your computer now and your IP address will show as preferred when running ipconfig /all. It will take some time to show (duplicate) if there is an IP conflict somewhere. Now you can isolate the network interface.