[KB3430] Identical IP addresses detected in network


  • You receive the notification "Identical IP addresses detected in network" 
  • You have multiple devices (for example, your computer and a phone or printer) on your network that are attempting to use the same IP address


If multiple devices are using the same IP address, at least one device will not be able to connect to the Internet.

In cases where there are duplicate IP addresses on the network, you can set up an IDS exception.


To resolve this issue, you will need to change the IP address that your computer is using. You can do this by performing a manual reset of your router (typically just by unplugging it and plugging it back in 30 seconds later) or by using the steps below to issue the release and renew IP commands.

  1. Click Start → All Programs → Accessories and click Command Prompt.
    • Windows 8 users: Press the Windows key + Q to open an app search, type cmd into the Search field and press Enter
  1. Type the following command and press Enter.

    ipconfig /release
  2. Type the following command and press Enter.

    ipconfig /renew

After your IP address is renewed, you should no longer receive notifications about identical IP addresses.