After downloading webroot.com/safe  Antivirus Setup. User need to install webroot safe on the device.Find  webroot  setup file and double click on it.Click on "run" button to install webroot.com/safe  Antivirus.Read all the terms and conditions carefully . and click on "I Agree".Click on next button to finish the installation.Your webroot.com/safe Antivirus gets installed completely.