IP Address Conflict

When you try to connect to the Internet, a message may appear indicating an IP address conflict or the connection constantly fails. This is probably because two computers on the same network are trying to get the same IP address. In fact, most routers are configured for DHCP, i. e. distribute IP addresses automatically. If due to some reason a fixed IP address is required on one of the computers in the network, DHCP may attempt to assign this IP address to another one, causing this problem.

How to troubleshoot IP address conflict

If you receive an error such as: “There is an IP address conflict with another system on the network”, “Windows detected a conflict in the IP address”, or a similar one, then it is because your computer has a duplicate IP or similar to that assigned to another device within the same network. Many times these conflicts are solved automatically, but it can take time and even not solve by itself.

Some Tips to solve

Renew IP address. You can free and renew the IP address of your computer using the Command Prompt. This can be done with the command ipconfig/renew, for which you must follow the following steps:

  • Open the Command Prompt. You can do this by using the Run (Windows + R) tool, by looking directly at the Start menu or typing “System symbol” in the latter;
  • Once inside, type ipconfig/renew and press the Enter button;
  • Since the DHCP server automatically manages IP addresses, it will give your computer an available IP that is not being used by other computers on the network.

Reconfigure static IP. If you are using a static IP, you can manually change that address to a different one. You must make sure that the new address to be used is not
Using, for which you can make a continuous PING to that IP (Eg ping 10.2.157.54 -t).

Use DHCP. If it is not necessary to use a static IP address, it is best to let it be dynamically assigned by DHCP. The server will handle the issue better because it will know which IP addresses are free and which are being used.

Update the firmware of the router. Sometimes the problem may be a malfunction of the DHCP server, and it assigns the same IP address to more than one computer. For these cases, it is best to update the firmware of the router being used.