I have had this issue for a number of years now. Every time I try to connect to the wifi network at my in-law's home, my Surface Pro 4 will say it Can't connect to this network. Eventually, after 10-60 minutes, It will randomly connect and be fine for a while, but often disconnects after an hour or so. It will do this every time whether I reset my PC, router, network adapters, I've tried everything I can think of. I had this exact same issue with a surface pro 3 I had a number of years ago. Anybody ever had a similar issue or have any ideas how to solve it? Thanks.