I'm also having the same problem since installing the latest Windows 10 update. I get the error message, "Sorry, it is not possible to establish a connection."
I have tried various different servers, but always with the same result. I also tried the registry edit that worked when I first installed Windows 10 but this time it made no difference.
It's not a problem with the ISP because my Android tablet and Android phone can both establish a connection without any problem.