VLC on iOS: Sharing via WiFi doesn't work anymore?
Had same problem. I power cycled everything. Unplug everything.
Plug in modem and router and let them settle. Then power up computer. 
The IP address for Ipad got the same response...BUT....
Chrome kept trying the address and it connected!
I closed chrome and reopened to try again. Same. It did not connect immediately- but within a few minutes (and chrome continuously retrying) it had connected again.
As long as it finally connects - that works for me!