connection to xamarin.ios build host failed

HI All,

I already install VS 2015 in windows and Xamarin in VS 2015. When i created project with Xamarin.Forms Shared after that i start debug then error with "Connection to Xamarin.iOS Build Host failed. Double click here to attempt to reconnect/select a server."

Please help me to fix it. Or provide for me how to build host in windows?

Thank
HIeu