Your computer must be connected to your WiFi-router wirelessly, not via cable. make sure that your iPhone/iPad and your computer are connected to the same WiFi-network.temporarily disable all anti-virus and firewall software of your computer.if your computer is a Windows-based one, delete all previously created network shortcuts that you used for previous connection attempts.don`t use Bonjour-address from WiFi-transfer page, for Troubleshooting purposes use IP-address only.make sure that WiFi-signal strength is at maximum on both on your iPhone/iPad and on your computer.Restart your iPhone/iPad (power off, wait 10 seconds, power on again), restart your computer, and restart your WiFi-router (power off, wait 10 seconds, power on again).Make sure you`ve updated your computer operating system to the most recent version.In case of trouble with WiFi file transfer, please try to do the following: