Had issue connecting my Roku 2 XS wireless. I would continue to get error 014 after it would connect to wireless router but would fail on local network.
Knowing that I have entered all the correct information and everything else in the house was working wireless I started looking threw the forums. All of them said try and do power cycles, run wireless with no password, run the device in the DMZ which all failed.
After looking at every single menu in my Router GUI (Netgear WNDR4500) I noticed a setting that I thought was completely meant for something else. Under the wireless settings there is a check box for "Enable Wireless Isolation". It had been checked. Reading the "help" section on the bottom of the page clued me in what this was actually for. After un checking the box and applying the settings I went downstairs and attempted to connect the Roku again and BOOM what do you know, it works. I was using Power over Ethernet plugs which worked great but knowing that the wireless on the Roku should work period I wanted to figure it all out. As far as I could see no one has mentioned this in any of the trouble shooting forums I quickly glanced at. Not all routers have this function and many of the issues I did read was when people had changed wireless routers/ upgraded firmware.
Hope this helps anyone with the same issue, took me a few hours and hope it saves you time and frustration