I know this issue has been brought up af few times, but I haven't found a fix yet. Well, the problem is that Wi-Fi is not working after sleep on my 15" MacBook Pro Retina (Mid 2014). I need to restart the browser in order to get it to work. After that Wi-Fi works fine. I have tried to delete the airport/wifi plist files, changed the DNS and reset PRAM but nothing seems to fix the issue. Also I have tried changing the channel (running 5GHz) on my router. Once in a while I also experience that the page will not load (often when I click the homepage button in safari) If I then just click the refresh button it works again. Any suggestions? Is it software related or could it be hardware?