This causes one or both devices to lose network connectivity, showing an error like "Windows has detected an IP address conflict. " Restart your router — this reassigns IP addresses via DHCP, usually resolving the conflict. 1, conflicting with my router's IP address, which is set up to DCHP to my entire LAN with 192. Ensuring each device has a unique IP prevents network issues and keeps your internet. An IP address conflict occurs when two or more devices on the same network are assigned the same IP address, suitable to connectivity problems.