There are two addresses by which you can access the Linksys extender web interface and other features. The first one is the web address that is http//extender.linksys.com and the second one is the IP that is 192.168.1.1. These two addresses will redirect you to the web setup portal providing you access to the same features. Once you search for any of these addresses your device will bring you to the login window first. Then, enter the prompted details in the required fields and click on the login button. As a result, the setup window will appear on the screen which will also guide you with the setup instructions. However, if any of those addresses fail to work, you can use another one as an alternative.